Journal articles: 'Lauraceae Analysis'

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Tian, Yongjing, Jingbo Zhou, Yunyan Zhang, Shuang Wang, Ying Wang, Hong Liu, and Zhongsheng Wang. "Research Progress in Plant Molecular Systematics of Lauraceae." Biology 10, no. 5 (May 1, 2021): 391. http://dx.doi.org/10.3390/biology10050391.

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Lauraceae is a large family of woody plants with high ecological and economic value. The tribal and generic division and phylogenetic relationship of Lauraceae have long been controversial. Based on morphological and molecular evidence, phylogenetic relationships within the Cinnamomeae, Laureae and Perseeae tribes, also called ‘the Core Lauraceae’, have arisen particular attention. In this review, we comprehensively collated the literatures on the phylogeny of Lauraceae published in recent years and summarized progress made in molecular systematic researches employing gene fragments, chloroplast genomes and DNA barcodings analyses. We clarified the phylogenetic relationships and main controversies of ‘the Core Lauraceae’, the systemic position of fuzzy genera (Neocinnamomum, Caryodaphnopsis and Cassytha) and the development of chloroplast genome and DNA barcodes. We further suggested and proposed the whole genome analysis and different inflorescence types would be possible to provide more information for further research on phylogenetic relationships and taxonomy of Lauraceae.

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Oh, Mira, Hyun-Seung Park, Soohyun Um, Tae-Jin Yang, and Seung Hyun Kim. "A comparative phytochemical study of nine Lauraceae species by using chemometric data analysis." PLOS ONE 17, no. 9 (September 9, 2022): e0273616. http://dx.doi.org/10.1371/journal.pone.0273616.

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The diversity of secondary metabolites of individual plants results from multiple enzymatic processes in planta and various environmental factors, such as temperature, moisture, and soil conditions. Chemical composition analysis of plants can lead to a new method to understand relationship among comparable plants along with biological classification such as genetic and anatomical method. In this study, the chemical diversity of nine different Lauraceae species was investigated, and the plant samples were chemically analyzed and classified. Multivariate analysis methods, such as PLS-DA, were used to select important metabolites distinguishing the nine Lauraceae species. The selected metabolites were identified through preparative LC-MS or MS/MS fragment pattern analysis. In addition, the chemical dendrogram for the nine Lauraceae species was interpreted through molecular network analysis and compared with the genetic dendrogram. This approach enabled us to compare the complete chemical compositions of multiple plant samples to identify relationships among plants.

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Cruz-Maya, María Edith, Alejandro Facundo Barrientos-Priego, Lily Xochitl Zelaya-Molina, José Luis Rodríguez-de la O, and Juan Carlos Reyes-Alemán. "Phylogenetic analysis of some members of the subgenus Persea (Persea, Lauraceae)." Revista Chapingo Serie Horticultura 24, no. 2 (May 2018): 133–50. http://dx.doi.org/10.5154/r.rchsh.2017.12.038.

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Trofimov, Dimitrij, and Jens G. Rohwer. "Towards a phylogenetic classification of the Ocotea complex (Lauraceae): an analysis with emphasis on the Old World taxa and description of the new genus Kuloa." Botanical Journal of the Linnean Society 192, no. 3 (January 3, 2020): 510–35. http://dx.doi.org/10.1093/botlinnean/boz088.

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Abstract Ocotea is one of the largest genera in the Lauraceae (c. 400 spp.), and it has been known to be paraphyletic with respect to most other genera of the New World Lauraceae for almost 20 years. In the traditional circumscription, Ocotea contains not only Neotropical species, but also about 45 species from the African region, including Macaronesia, Madagascar, and the Comoro and Mascarene Islands. Only a few of the species have been included in previous molecular systematic analyses. Here we present a phylogenetic analysis, based on ITS and psbA-trnH sequences of 168 Lauraceae species, including 151 taxa from the Ocotea complex, among them 26 of the 45 Palaeotropical species currently placed in Ocotea. Our results show that the Old World species belong to two well-supported and morphologically distinguishable clades, one of which is placed unresolved among the Neotropical clades of the Ocotea complex, whereas the other is sister to Cinnamomum section Cinnamomum. The two clades can also be differentiated based morphologically. As a step towards a phylogenetic classification, we recognize the second group as the new genus Kuloa.

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Son, Le C., Do N. Dai, Tran D. Thang, Duong D. Huyen, and Isiaka A. Ogunwande. "Analysis of the Essential Oils from Five VietnameseLitseaSpecies (Lauraceae)." Journal of Essential Oil Bearing Plants 17, no. 5 (September 3, 2014): 960–71. http://dx.doi.org/10.1080/0972060x.2014.935068.

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Antonio, Ananda S., Valdir F. Veiga-Junior, and Larissa Silveira Moreira Wiedemann. "Ocotea complex: A metabolomic analysis of a Lauraceae genus." Phytochemistry 173 (May 2020): 112314. http://dx.doi.org/10.1016/j.phytochem.2020.112314.

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Ceolin, Guilherme Bordignon, Jumaida Maria Rosito, and Thais Scotti do Canto-Dorow. "Leaf surface characters applied to Lauraceae taxonomy in a Seasonal Forest of Southern Brazil." Brazilian Archives of Biology and Technology 52, no. 6 (December 2009): 1453–60. http://dx.doi.org/10.1590/s1516-89132009000600017.

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The goal of this work was to test if the macro and micro morphological analysis of the leaf surface could provide vegetative diagnostic characters for some of the most common Lauraceae species in Southern Brazilian Seasonal Forests. The leaf printing technique with universal instantaneous adhesive was used for the epidermical microscopical analysis and external macroscospical analyses of leave were made. Microscopic evaluation revealed the visibility and contours of anticlinal walls of epidermical cell and stomata and shape of guard-cells. Macroscopic evaluation showed the absence or presence of characters such as hairiness, domatia and scents. The results showed that analyzed characters, together with other diagnostic characteristics, could contribute in taxonomic delimitation of some common Lauraceae species in the Southern Brazil.

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Kieras, Wesllen Schuhli, Sebastião Do Amaral Machado, Allan Libanio Pelissari, Vinicius Costa Cysneiros, and Samuel Alves Da Silva. "INFLUENCE OF THE LAURACEAE FAMILY ON THE DYNAMICS OF A MIXED OMBROPHILOUS FOREST REMNANT." FLORESTA 51, no. 1 (December 29, 2020): 164. http://dx.doi.org/10.5380/rf.v51i1.67629.

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Lauraceae family has one of the highest values of importance in the Mixed Ombrophilous Forest (MOF). The commercial value of some of its species was a reason for intense forest exploitation in the southern region of Brazil. Considering the hypothesis that it provides an essential subsidy for the constitution of this forest type, the aim of this study was to identify and quantify the influence of Lauraceae family in the dynamics of a 15.2 ha MOF remnant. Census data were collected every three years, since 2007, in which all trees with a circumference at 1.3 m height equal to or greater than 30 cm were identified and measured. Dynamics were analyzed by periodic increment in diameter, recruitment, and mortality through the measurement periods, while cluster multivariate analysis and canonical correlation were applied for grouping species and assessing their importance on the forest remnant dynamics. Diameter distribution prognosis of Lauraceae and its species was obtained through a transition matrix. Eleven tree species of Lauraceae family were identified, which showed decreasing diameter distribution and value of importance equals to 9.51%. Using cluster analysis, five groups were obtained, while the canonical correlation of 0.551 was considered moderate and statistically significant by Wilks’ Lambda test. By the projection of diameter distribution, it was verified that the study community is stable and self-regenerative. Although it is considered moderate, the influence of family on the forest remnant tends to increase with the advance of ecological succession.

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Ebling, Angelo Augusto, Sylvio Péllico Netto, Luciano Farinha Watzlawick, Rodrigo Otávio Veiga de Miranda, and Simone Filipini Abrão. "ECOLOGIA E PROJEÇÃO DIAMÉTRICA DE TRÊS GRUPOS ARBÓREOS EM REMANESCENTE DE FLORESTA OMBRÓFILA MISTA EM SÃO FRANCISCO DE PAULA, RS." FLORESTA 43, no. 2 (July 2, 2013): 261. http://dx.doi.org/10.5380/rf.v43i2.28604.

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A Floresta Ombrófila Mista desempenha importante função social e ecológica na região Sul do Brasil. Embora tenha sofrido um profundo processo exploratório, resultando em sua fragmentação, apresenta elevado potencial para o manejo que, devidamente aplicado, favorece a conservação e recuperação de seus remanescentes. Com o objetivo de avaliar o incremento diamétrico e a dinâmica sucessional dessa fitofisionomia, foram empregados dados oriundos do estrato arbóreo (DAP ≥9,5 cm) de 10 parcelas permanentes de 1 ha cada, remedidas anualmente entre o período de 2000 a 2009, na Floresta Nacional de São Francisco de Paula, RS. As observações e projeções indicaram gradual redução da densidade da floresta, com destaque para a espécie Araucaria angustifolia (Bertol.) Kuntz., entretanto, observou-se tendência de aumento na densidade da família Lauraceae. O período de meia vida estimado para a floresta foi de 97 anos e, para Araucaria angustifolia, 332 anos. As estimativas ainda sugerem que, em 71 anos, as espécies de Lauraceae devem duplicar sua densidade. O crescimento da floresta foi inferior ao da família Lauraceae (= 0,175 cm/ano e = 0,179 cm/ano, respectivamente) e a Araucaria angustifolia manteve o menor crescimento (= 0,159 cm/ano). As análises indicaram um avanço sucessional, com a gradual substituição da Araucaria angustifolia por espécies com maior adaptação às condições de equilíbrio.Palavras-chave: Família Lauraceae; Floresta com Araucária; sucessão florestal. AbstractEcology and diametric projection of three arboreal groups in a Mixed Ombrophilous Forest fragment in São Francisco de RS, Brazil. The Mixed Ombrophylous Forest performs an important social and ecological function in southern Brazil. Although it has suffered a profound exploratory process, resulting in their fragmentation, it has a high potential for management that, properly applied, promotes conservation and recovery of their remains. In order to assess the increment in diameter and dynamics of phytophisiognomy, this research used data from the tree strata (DBH≥9.5 cm) of 10 permanent plots of 1 ha each remeasured annually between the period 2000 to 2009 in São Francisco de Paula National Forest, RS, Brazil. The observations and projections indicate a gradual reduction in the forest density, showing up Araucaria angustifolia (Bertol.) Kuntze species, however, for the Lauraceae species, there was a tendency of increase. The period of half-life estimated for the forest was 97 years and for Araucaria angustifolia, 332 years. The estimates also suggested that in 71 years, the Lauraceae should double its density. The forest growth was lower than that observed in the Lauraceae (=0.175 cm/year and =0.179 cm/year, respectively) and Araucaria angustifolia maintained the lowest growth (=0.159 cm/year). The analysis indicated a positive advance, with the gradual replacement of Araucaria angustifolia by other species with greater adaptation to the successional conditions. Keywords: Araucaria Forest; Lauraceae family; forest succession.

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Wulandari, Indah, and Harlinda Kuspradini, Irawan Wijaya. "agriculture, fisheries, forestry, West Kutai, zone." AGRIFOR 17, no. 2 (October 10, 2018): 275. http://dx.doi.org/10.31293/af.v17i2.3354.

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Litsea is a important genus from Lauraceae family, found in the tropic and subtropic Asia, Australia and from North to South America. Related literature review with biology activity show that secondary metabolite compounds in the Lauraceae plants contained insecticide and cytotoxic activities. Insecticide activities show bioactive compounds such as alkaloid, terpenoid and flavonoid. Botanical insecticides by terpenoid groups that found is piretrin, camphene and azardirakhtin. This research do to analyze secondary metabolite compunds by five species Litsea extract from bole, bark and leaf. Analysis of phytochemical compunds using qualitative method. Based on test result can be known that five species positively contains alkaloids, flavonoids, tannins, carbohydrate and coumarins.

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Posochova, I. Yu, O. P. Khvorost, and Yu A. Fedchenkova. "COMPARATIVE ANALYSIS OF MORPHOLOGICAL-ANATOMICAL FEATURES OF THE LEAVES STRUCTURE OF REPRESENTATIVES OF THE FAMILY LAURACEAE." Fitoterapia 4, no. 4 (2019): 46–50. http://dx.doi.org/10.33617/2522-9680-2019-4-46.

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Terreaux, Christian, Marc Maillard, Kurt Hostettmann, Gaetano Lodi, and Etienne Hakizamungu. "Analysis of the fungicidal constituents from the bark ofOcotea usambarensis Engl. (Lauraceae)." Phytochemical Analysis 5, no. 5 (September 1994): 233–38. http://dx.doi.org/10.1002/pca.2800050503.

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MORAES, PEDRO LUÍS RODRIGUES DE, HENRIQUE LAUAND RIBEIRO, and CARLOS ALBERTO MOYSÉS NETO. "Leaf cuticle in Brazilian species of Cryptocarya (Lauraceae)." Phytotaxa 571, no. 2 (November 3, 2022): 112–40. http://dx.doi.org/10.11646/phytotaxa.571.2.2.

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In this study, we analysed leaf cuticle characters of 61 collections from 13 Cryptocarya species recognised in Brazil, of which 11 are considered endemic, and one Costa Rican collection of an unidentified species. Most Cryptocarya species studied have predominantly undulate anticlinal epidermal walls on the adaxial surface, butterfly-shaped stomatal ledges and the stomatal complex protruding and arching over the stomatal slit with a rim resembling two kidneys facing each other (reniform rims). Analysis of a matrix of six leaf cuticle qualitative characters and 19 states, most of them illustrated here for the first time by light and scanning electron microscopy, allowed us to distinguish these taxa. Based on these characters, two Brazilian Cryptocarya species can be easily separated from the others by their predominantly straight anticlinal epidermal walls adaxially and the almost flat surface appearance of the stomatal complex.

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Li, Hsing-Tan, Wei-Jen Li, Hui-Ming Wu, and Chung-Yi Chen. "Alkaloids from Cinnamomum Philippinense." Natural Product Communications 7, no. 12 (December 2012): 1934578X1200701. http://dx.doi.org/10.1177/1934578x1200701209.

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A new pyridine, 2-(4′-hydroxypyridin-3′-yl)-acetic acid (1), along with five known alkaloids, cinnaretamine (2), crykonisine (3), corydaldine (4), glaziovine (5) and zenkerine (6), were isolated from the roots of Cinnamomum philippinense (Lauraceae). Their structures were characterized and identified by spectral analysis.

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Bai, Xue, Juan Peng, Yongyi Yang, and Biao Xiong. "The Complete Chloroplast Genome Sequence of Machilus chuanchienensis (Lauraceae): Genome Structure and Phylogenetic Analysis." Genes 13, no. 12 (December 18, 2022): 2402. http://dx.doi.org/10.3390/genes13122402.

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Machilus chuanchienensis is an ecological tree distributed in southwestern China. It has a significant valuation with making Hawk tea using its leaves, an ethnic traditional tea-like beverage with a long history in Chinese tea culture. The whole chloroplast (cp) genome is an ideal model for the phylogenetic study of Lauraceae because of its simple structure and highly conserved features. There have been numerous reports of complete cp genome sequences in Lauraceae, but little is known about M. chuanchienensis. Here, the next-generation sequencing (NGS) was used to sequence the M. chuanchienensis cp genome. Then, a comprehensive comparative genome analysis was performed. The results revealed that the M. chuanchienensis’s cp genome measured 152,748 base pairs (bp) with a GC content of 39.15% and coded 126 genes annotated, including comprising eight ribosomal RNA (rRNA), 36 transporter RNA (tRNA), and 82 protein-coding genes. In addition, the cp genome presented a typical quadripartite structure comprising a large single-copy (LSC; 93,811) region, a small single-copy (SSC; 18,803) region, and the inverted repeats (IRs; 20,067) region and contained 92 simple sequence repeat (SSR) locus in total. Phylogenetic relationships of 37 species indicated that M. chuanchienensis was a sister to M. balansae, M. melanophylla, and M. minutiflora. Further research on this crucial species may benefit significantly from these findings.

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Vidal, Laura Maria Teodorio, Beatriz Pinheiro Bezerra, Jéssica Castro de Fonseca, Auriana Serra Vasconcelos Mallmann, Francisca Cléa Florenço de Sousa, José Maria Barbosa-Filho, and Alejandro Pedro Ayala. "Polymorphism in natural alkamides from Aniba riparia (Nees) Mez (Lauraceae)." CrystEngComm 22, no. 44 (2020): 7607–16. http://dx.doi.org/10.1039/d0ce01078b.

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The elucidation of crystal structures of polymorphs of riparins I, II, and III combined with thermal analysis studies allowed the determination of the thermodynamic relationships between polymorphic pairs.

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Hong, Zi-Ling, Jin-Cherng Huang, Soong-Yu Kuo, and Chung-Yi Chen. "Amides from the Stems of Cinnamomum burmannii." Natural Product Communications 6, no. 9 (September 2011): 1934578X1100600. http://dx.doi.org/10.1177/1934578x1100600922.

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A novel amide, cinnabutamine (1), along with five known amides, cinnaretamine (2), N-trans-caffeoyl-5-hydroxytyramine (3), N-trans-feruloyltyramine (4), N-trans-feruloyl-5-methoxytyramine (5) and N-cis-feruloyl-5-methoxytyramine (6), were isolated from the stems of Cinnamomum burmannii (Lauraceae). Their structures were characterized and identified by spectral analysis.

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Okezu, Obinna, Umar Mamza, and Samuel Adawara. "GC-MS Analysis of n-Hexane Fruit Peel Extract of Persea americana (Lauraceae)." Tropical Journal of Natural Product Research 4, no. 4 (April 30, 2020): 146–52. http://dx.doi.org/10.26538/tjnpr/v4i4.6.

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Muhammed, Arif M., Raj M. Subbu, Leopold Jirovetz, and Shafi P. Mohamed. "Composition and Antimicrobial Analysis of the Essential Oil of Litsea Laevigata Nees. (Lauraceae)." Natural Product Communications 3, no. 7 (July 2008): 1934578X0800300. http://dx.doi.org/10.1177/1934578x0800300707.

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The essential oil of the berries of Litsea laevigata Nees., growing wild in Western Ghats, Kerala, India, was obtained by hydrodistillation and was fractionated by passage through a column using n-pentane and diethyl ether as eluents. The essential oil and its fractions were analysed by GC and GC-MS. Twenty seven compounds representing 99.2% of the original oil were identified. The major components are the terpene hydrocarbons trans-α-bergamotene(26.7%), α-pinene (25%) and β-pinene (8.2%). The antimicrobial activity of the essential oil and its fractions against four Gram-positive and four Gram-negative bacteria ( Staphylococcus aureus, Bacillus subtilis, Streptococcus faecalis, Staphylococcus albus, Escherichia coli, Pseudomonas aeruginosa, Proteus vulgaris, Klebsiella aerogenes), as well as two fungi ( Candida albicans, Aspergillus niger) was studied. The bioassay showed that the oil exhibited moderate to high antimicrobial activity, being very active against gram-positive bacteria, such as Streptococcus albus, and the fungus Aspergillus niger.

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Rios-Motta, Jaime, and Eliseo Avella. "2-Arylbenzofuran Neolignans from the Bark of Nectandra purpurascens (Lauraceae)." Natural Product Communications 5, no. 7 (July 2010): 1934578X1000500. http://dx.doi.org/10.1177/1934578x1000500716.

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The toluene extract of the stem bark of N. purpurascens (R&P) Mez. contained a large amount of these 2-arylbenzofurans including methyl 7-methoxy-2-(3,4-methylenedioxyphenyl)benzofuran-5-carboxylate (2), a new benzofuran, along with three known compounds identified as kumatakenin (1), 5-(2-propenyl)-7-methoxy-2-(3,4-methylenedioxyphenyl)benzofuran (3), and egonoic acid (4). The structure of the new compound was established on the basis of spectroscopic analysis.

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PARK, Yoo-Jung, and Kyeong-Sik CHEON. "The complete chloroplast genome sequence of Korean Neolitsea sericea (Lauraceae)." Korean Journal of Plant Taxonomy 51, no. 3 (September 30, 2021): 332–36. http://dx.doi.org/10.11110/kjpt.2021.51.3.332.

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The complete chloroplast (cp) genome sequence of Neolitsea sericea was determined by Illumina sequencing. The complete cp genome was 152,446bp in length, containing a large single-copy region of 93,796 bp and a small single-copy region of 18,506bp, which were separated by a pair of 20,072bp inverted repeats. A total of 112 unique genes were annotated, including 78 protein-coding genes (PCGs), 30 transfer RNAs, and four ribosomal RNAs. Among the PCGs, 18 genes contained one or two introns. A very low level of sequence variation between two cp genomes of N. sericea was found with seven insertions or deletions and only one single nucleotide polymorphism. An analysis using the maximum likelihood method showed that N. sericea was closely related to Actinodaphne trichocarpa.

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Wang, Xin-yu, Huan Hu, and Dan Zhang. "The complete chloroplast genome of Litsea molis Hemsl. (Lauraceae): genome structure and phylogenetic analysis." Mitochondrial DNA Part B 6, no. 1 (January 2, 2021): 202–4. http://dx.doi.org/10.1080/23802359.2020.1790315.

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Gibson, J. Phil, and Pamela K. Diggle. "Structural analysis of female and Hermaphroditic Flowers of a Gynodioecious Tree, Ocotea Tenera (Lauraceae)." American Journal of Botany 84, no. 3 (March 1997): 298–307. http://dx.doi.org/10.2307/2446003.

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Mane, Rohit Nivas, Jagdish Vishnu Dalavi, and Shrirang Ramchandra Yadav. "Karyomorphological Analysis of <i>Litsea ligustrina</i> (Lauraceae) from India." CYTOLOGIA 87, no. 1 (March 25, 2022): 55–57. http://dx.doi.org/10.1508/cytologia.87.55.

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Li, L., J. Li, J. G. Conran, X. W. Li, and (H W. Li). "Phylogeny of Neolitsea (Lauraceae) inferred from Bayesian analysis of nrDNA ITS and ETS sequences." Plant Systematics and Evolution 269, no. 3-4 (October 26, 2007): 203–21. http://dx.doi.org/10.1007/s00606-007-0580-8.

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Bauer, Danielle, Andressa Müller, Milena Nunes Bernardes Goetz, and Jairo Lizandro Schmitt. "FENOLOGIA DE Ocotea pulchella, Myrcia brasiliensis E Psidium cattleyanum, EM FLORESTA SEMIDECÍDUA DO SUL DO BRASIL." FLORESTA 44, no. 4 (December 31, 2014): 657. http://dx.doi.org/10.5380/rf.v44i4.31410.

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Eventos vegetativos e reprodutivos de Ocotea pulchella (Nees) Mez (Lauraceae), Myrcia brasiliensis Kiaersk e Psidium cattleyanum Sabine (Myrtaceae) foram avaliados, em fragmento de floresta semidecidual secundária durante dois anos. Foi realizada uma análise estatística circular e as fenofases foram correlacionadas à temperatura, comprimento do dia e precipitação. A queda foliar e brotamento das espécies ocorreram continuamente durante o biênio caracterizando fraca sazonalidade. A floração, incluindo o surgimento de botões florais e antese, caracterizou um padrão sazonal nas três espécies. Myrcia brasiliensis e Psidium cattleyanum apresentaram grande concentração de indivíduos em torno da data média (r) para a fenofase frutos imaturos, enquanto que, em O. pulchella, a produção foi praticamente constante (r baixo). O surgimento dos frutos em P. cattleyanum e O. pulchella demonstrou relação com comprimento do dia e temperatura, nos dois anos. Todas as espécies apresentaram alta concentração de indivíduos com frutos maduros, em alguma época do ano, permitindo estimativa da data média desse evento reprodutivo e indicando sazonalidade no amadurecimento. As três espécies potencialmente podem oferecer recursos alimentares aos animais locais, principalmente as aves, porque os frutos maduros ficaram disponíveis ao longo do período inteiro.Palavras-chave: Fenofases; espécies arbóreas; floresta atlântica; Lauraceae; Myrtaceae. AbstractPhenology of Ocotea pulchella, Myrcia brasiliensis and Psidium cattleyanum in semideciduous forest in southern Brazil. We evaluated vegetative and reproductive events of Ocotea pulchella (Nees) Mez (Lauraceae), Myrcia brasiliensis Kiaersk and Psidium cattleyanum Sabine (Myrtaceae) in a secondary semideciduous forest fragment for two years. We performed a circular data analysis and we correlated phenophases to temperature, daylenght and rainfall. Leaf fall and leaf appearance occurred continuously during the biennium featuring a low seasonality. The flowering, including the emergence of floral buds and anthesis, featured a seasonal pattern. Myrcia brasiliensis and Psidium cattleyanum showed great concentration of immature fruits around the average date (r), while fruit production of O. pulchella was almost constant (low r). The appearance of the fruits in P. cattleyanum and O. pulchella revealed a connection between daylenght and temperature in both years. All species had high concentration of individuals with mature fruits at some time of the year, allowing estimation of the average date of the reproductive event and indicating seasonality of maturation. The three species may potentially provide food resources for local animals, mainly birds, because mature fruits were available throughout the entire period.Keywords: Phenophases; tree species; atlantic rain forest; Lauraceae; Myrtaceae.

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Fijridiyanto, Izu A., and Noriaki Murakami. "Phylogeny of Litsea and related genera (Laureae-Lauraceae) based on analysis of rpb2 gene sequences." Journal of Plant Research 122, no. 3 (February 15, 2009): 283–98. http://dx.doi.org/10.1007/s10265-009-0218-8.

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Verdian-rizi, Mohammadreza, and Abbas Hadjiakhoondi. "Essential Oil Composition of Laurus nobilis L. of Different Growth Stages Growing in Iran." Zeitschrift für Naturforschung C 63, no. 11-12 (December 1, 2008): 785–88. http://dx.doi.org/10.1515/znc-2008-11-1201.

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Abstract The chemical variations of the essential oil from the aerial parts of Laurus nobilis L. (Lauraceae) have been studied. Plant material has been harvested at each phenological status (vegetative, before anthesis, full flowering and seed-bearing). The oils were obtained by hydrodistillation of the air-dried samples. Analysis by GC and GC-MS of the essential oils has allowed to identify 39 compounds. The main compounds were 1,8-cineole, trans-sabinene hydrate, α-terpinyl acetate, methyl eugenol, sabinene, eugenol and α-pinene.

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Li, Zhiting, Yongda Zhong, Faxin Yu, and Meng Xu. "Novel SSR marker development and genetic diversity analysis of Cinnamomum camphora based on transcriptome sequencing." Plant Genetic Resources: Characterization and Utilization 16, no. 6 (May 31, 2018): 568–71. http://dx.doi.org/10.1017/s147926211800014x.

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AbstractCinnamomum camphora (Lauraceae) is a well-known multipurpose tree with aromatic oils, insect-repellent effects and ornamental value. In this study, a total of 74,289 simple sequence repeats (SSRs) were found in 56,124 unigenes, of which 14,225 unigenes contained more than one SSR locus. Among these SSR loci, the mono-nucleotide repeats were the most frequent, with a frequency of 61.14%, followed by 24.87% di-nucleotide repeats and 12.87% tri-nucleotide repeats. Twenty-one polymorphic SSR markers were developed and validated in 45 camphor trees. The 21 loci were further examined for cross-species transferability in other six related species. The novel genic-SSR markers will not only benefit genetic diversity analysis and wild resources conservation of C. camphora, but also contribute to exploring the further evolutionary history and genetic differentiation pattern of Cinnamomum.

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Coy-Barrera, Ericsson D., Luis E. Cuca-Suárez, Michael Sefkow, and Uwe Schilde. "Cinerin C: a macrophyllin-type bicyclo[3.2.1]octane neolignan fromPleurothyrium cinereum(Lauraceae)." Acta Crystallographica Section C Crystal Structure Communications 68, no. 8 (July 19, 2012): o320—o322. http://dx.doi.org/10.1107/s0108270112030946.

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The structure of naturally-occurring cinerin C [systematic name: (7S,8R,3′R,4′S,5′R)-Δ8′-4′-hydroxy-5,5′,3′-trimethoxy-3,4-methylenedioxy-2′,3′,4′,5′-tetrahydro-2′-oxo-7.3′,8.5′-neolignan], isolated from the ethanol extract of leaves ofPleurothyrium cinereum(Lauraceae), has previously been established by NMR and HRMS spectroscopy, and its absolute configuration established by circular dichroism measurements. For the first time, its crystal strucure has now been established by single-crystal X-ray analysis, as the monohydrate, C22H26O7·H2O. The bicyclooctane moiety comprises fused cyclopentane and cyclohexenone rings which are almost coplanar. An intermolecular O—H...O hydrogen bond links the 4′-OH and 5′-OCH3groups along thecaxis.

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SINGH, ANKIT, MOHAN CHANDRA NAUTIYAL, AJAY KUMAR GAUTAM, PARAS NATH SINGH, and SANJAY KUMAR SINGH. "Taxonomic and phylogenetic analysis of Clinoconidium lauracearum (Cryptobasidiaceae) producing galls on fruits of Cinnamomum tamala (Lauraceae) in India." Phytotaxa 450, no. 1 (June 24, 2020): 73–84. http://dx.doi.org/10.11646/phytotaxa.450.1.5.

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Clinoconidium lauracearum sp. nov. (Cryptobasidiaceae) is described and illustrated from infected fruits of Cinnamomum tamala (Lauraceae) collected from Rudraprayag district of Uttarakhand State, India. The species shows characteristics of Clinoconidium and Drepanoconis, but differs from other species in these genera by the combination of shapes, sizes, and septation of basidiospores. Molecular data also indicate that the present taxon is distinct from the other known species of Clinoconidium and Drepanoconis. Analyses of combined ITS and LSU rDNA and separate LSU rDNA sequence data reveal a close association of the present taxon to the genus Clinoconidium, but also that it is distinct from the other known species in the genus.

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Alves, Flávio Macedo, and Vinícius Castro Souza. "Phylogenetic analysis of the Neotropical genus Mezilaurus and reestablishment of Clinostemon (Lauraceae)." Taxon 62, no. 2 (April 20, 2013): 281–90. http://dx.doi.org/10.12705/622.5.

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Rohwer, Jens Gunter, PEDRO LUIS RODRIGUES DE MORAES, BARBARA RUDOLPH, and HENK VAN DER WERFF. "A phylogenetic analysis of the Cryptocarya group (Lauraceae), and relationships of Dahlgrenodendron, Sinopora, Triadodaphne, and Yasunia." Phytotaxa 158, no. 2 (February 3, 2014): 111. http://dx.doi.org/10.11646/phytotaxa.158.2.1.

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A phylogenetic analysis based on nuclear ITS and plastid trnK intron sequences confirms that Dahlgrenodendron, Sinopora, Triadodaphne, and Yasunia are members of the Cryptocarya group, as expected from morphology. Dahlgrenodendron from South Africa is sister to Aspidostemon from Madagascar. Triadodaphne inaequitepala is nested within Endiandra (both from Australasia), and Yasunia from South America is nested among South American Beilschmiedia species. Sinopora is a member of the Beilschmiedia clade, but its precise position is still uncertain. Among large genera of the group, Cryptocarya is clearly monophyletic, and Endiandra appears to be as well, if T. inaequitepala is included. Beilschmiedia is paraphyletic with respect to (at least) Potameia and Yasunia. Most well-supported clades within genera are geographically homogeneous, except a clade including the Chilean Cryptocarya alba and two New Caledonian species. Both Beilschmiedia and Cryptocarya have reached the Americas more than once. Four-locular anthers are plesiomorphic in the Cryptocarya group; two-locular anthers have arisen by fusion of the two pollen sacs of a theca. In the plesiomorphic fruit type, the ovary is completely enclosed in receptacular tissue; a superior fruit, seated free on its pedicel, is a synapomorphy of the Beilschmiedia clade.

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Zhou, Quan, Dongfang Zheng, Yong Zhao, Ting Wang, Yafeng Yang, and Muhammad Ashraf. "Active constituents of Litsea cubeba." Thermal Science 24, no. 3 Part A (2020): 1745–52. http://dx.doi.org/10.2298/tsci190526047z.

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Litsea cubeba is a plant of Lauraceae and Litsea. It is a valuable plant and has a wide range of uses, including in traditional Chinese medicine. Herein, Litsea cubeba wood was harvested from Henan Province, The active ingredients were extracted from Litsea cubeba wood by modern techniques such as gas chromatography-mass spectrometry (GC-MS), thermal gravimetric analysis, and thermal desorption gas chromatography-mass spectrometry. The analysis results show that the wood of Litsea cubeba contains a large amount of valuable active substances that can be utilized in medicine, bio-energy, and spices and flavorings, and large-scale cultivation of this plant could be beneficial.

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Vikulin, Sergei Vasilyevich. "Ocotea dilcherii, a new name for Ocotea obtusifolia (Berry) LaMotte (Lauraceae)." Phytotaxa 239, no. 2 (December 23, 2015): 199. http://dx.doi.org/10.11646/phytotaxa.239.2.10.

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The fossil species Oreodaphne obtusifolia Berry (1916: 301) was described, based on the fossil leaf remains of the most abundant laurel from the Early Eocene Wilcox Group sediments of Holly Springs: Marshall Co, Grenada Co., Miss.: Mississippi embayment (Southeastern North America). Nowadays, most systematists consider the extant Oreodaphne to be a member of Ocotea (Mez, 1889: 219; Rohwer, 1986; van der Werff, 2002; Chanderbali et al., 2001). LaMotte (1952) transferred Berry’s (1916: 301) combination to Ocotea, and this transfer was followed by Dilcher (1963), who reinforced attribution of Wilcox leaf megafossils to Ocotea by cuticular analysis of epidermis and stomata (Dilcher & Lott, 2005). However, according to Art. 53.1 of the ICN (McNeill et al. 2012) the name Ocotea obtusifolia (Berry) LaMotte (1952) is illegitimate because of the existence of the earlier overlooked homonym, Ocotea obtusifolia Kunth (1817: 165–166), an extant lauraceous species from Colombia (Muséum National d’Histoire Naturelle, holotype: http://plants.jstor.org/stable/10.5555/al.ap.specimen.P00128771). The homonymy between these fossil and extant American species of Ocotea was revealed during the description of the new fossil Early Oligocene species Ocotea rossica Vikulin from the south of the Middle-Russian upland (Vikulin, 2015: 326). Since Ocotea obtusifolia (Berry) LaMotte has been systematically recognized as a valid species in current use and it does not have any synonym, a nomen novum, O. dilcherii, is formally proposed here as a replaced name. Because a type specimen was not indicated among the validating illustrations of Berry (1916: pl. 80, fig. 1; pl. 83, fig. 2–5, and pl. 84, fig. 1 and 2), a lectotype must be designated here, from the specimens illustrated in the protologue (Berry, 1916: 301–302) amongst those perfect specimens with blunt leaf apex, which are very abundant in the clays at Puryear, Tenn. (Proposed lectotype: paleobotany collection # USNM 35867, Smithsonian National Museum of Natural History (USA), illustrated in Berry, 1916: 301, pl. 83, fig. 5.

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Lima, Wilberto De, Luis B. Rojas-Fermín, Sonia Koteich-Khatib, María Eugenia Lucena, and Juan Carmona Arzola. "Volatile Constituents of the Leaves of Aniba hostmanniana (Lauraceae) and their Antibacterial Activities." Natural Product Communications 10, no. 7 (July 2015): 1934578X1501000. http://dx.doi.org/10.1177/1934578x1501000747.

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The essential oil of Aniba hostmanniana (Nees) Mez, family Lauraceae, was obtained from fresh leaves by hydrodistillation. The chemical composition of the oil was assessed using gas chromatography with mass spectrometric detection (GC-MS). The antimicrobial activity of the essential oil was tested against Gram-negative bacteria ( Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumonia) and the Gram-positive bacterium Staphylococcus aureus. GC-MS analysis revealed the presence of 35 compounds in the essential oil, the predominant ones being benzyl benzoate (29.3%), δ-cadinene (12%), β-caryophyllene (10.5%), bicyclogermacrene (5.9%), and α-copaene (3.9%). The oil showed activity against most of the bacterial strains studied.

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Scheper, R. W. A., O. E. Timudo-Torrevilla, J. Rees-George, and K. R. Everett. "Genetic variation among Glomerella cingulata isolates from different Lauraceae hosts." New Zealand Plant Protection 61 (August 1, 2008): 394. http://dx.doi.org/10.30843/nzpp.2008.61.6871.

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Four populations of Glomerella cingulata 20 isolates each were sampled from avocado (Perseae americana) fruit from orchards throughout New Zealand and from Queensland Australia and from leaves of Beilschmeidia tawa and Beilschmeidia taraire in Hawkes Bay and the Waitakere Ranges respectively Among 80 isolates 44 different colony morphologies were identified with only three of these occurring in more than one of the four populations The population from B taraire showed less variation in colony morphology than did the other populations with a Shannon and Weaver information statistic H of 047 compared with 071 to 093 More of the diversity occurred within the populations (64) than between them (36) Sequence analysis of the ITS region using maximumparsimony identified two clades among the isolates with all isolates from the native New Zealand trees clustering in one clade and all avocado isolates in the other Some variation was detected within the clades although all isolates from B taraire had identical sequences This study indicates that G cingulata populations from avocado and native trees may represent genetically isolated populations that have evolved separately To identify geographic origin of fungal populations from avocado a different DNA sequence with more variation is required

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MORAES, PEDRO LUÍS RODRIGUES DE. "Leaf venation of living species of Persea (Lauraceae), with taxonomic and nomenclatural notes." Phytotaxa 539, no. 2 (March 15, 2022): 77–129. http://dx.doi.org/10.11646/phytotaxa.539.2.1.

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With the aim of recognizing and identifying both fertile and sterile specimens of Persea, leaf venation patterns of 54 taxa were studied, 36 of them being described and illustrated for the first time. Analysis of a matrix of 12 leaf venation characters and 31 states distinguishes the taxa and can be used to detect misidentifications. Additionally, lectotypes for the names Laurus cordata, L. lingue (second-step), L. subcordata, Menestrata racemosa, Persea cordata var. microphylla, P. donnell-smithii, P. laevigata, P. lingue, P. nivea and P. rugosa are designated, and the identity of Persea microneura and the status of P. jariensis are clarified.

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Santos, Ronaldo Pereira, Wilson Roberto Spironello, and Paulo de Tarso Barbosa Sampaio. "Genetic diversity in rosewood saplings (Aniba rosaeodora ducke, Lauraceae): an ecological approach." Acta Amazonica 38, no. 4 (December 2008): 707–14. http://dx.doi.org/10.1590/s0044-59672008000400014.

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This article takes an ecological approach to the genetic diversity of Rosewood (Aniba rosaeodora Ducke) in a central Amazonian terra firme forest north of Manaus. Planted Rosewood setting, under partial shaded canopy, were assessed in terms of fruiting production, frugivory, and seed dispersal. Using RAPD molecular analysis procedures, the influence of the spatial distribution of adult trees on the genetic diversity (polymorphism) of saplings was assessed with genetic samples from 34 reproductive trees and 60 saplings. The density and distribution patterns the reproductive trees did not modify the sapling"s diversity (1.86%, AMOVA). Two types of adult tree dispersion were identified; i) clumped and ii) more widely dispersed. Polymorphism (77.5%) and gene flow were high between these. Although more sapling genetic variability in areas with a higher density of mature plants was not as high as expected, density did not affect the genetic diversity of samplings, indicating a high incidence of gene flow amongst trees. In planted Rosewood population (surrounded by low disturbed forest), fruiting trees experienced a high level of removal of seeds by toucans (Rhamphastidae), about of 50%. The high gene flow found among native trees suggested that toucans, promoting seed rain at short and long distances from maternal trees, actively contribute to the maintenance of genetic diversity within wild rosewood populations.

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Ambi, Adamu A., Garba F. Nuru, Ahmed T. Mora, and Abubakar Ahmad. "Pharmacognostic studies and elemental analysis of the aerial parts of Cassytha filiformis Linn. (Family: Lauraceae)." Journal of Pharmacy & Bioresources 14, no. 1 (May 4, 2017): 88. http://dx.doi.org/10.4314/jpb.v14i1.12.

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Song, Yu, Xin Yao, Yunhong Tan, Yi Gan, and Richard T. Corlett. "Complete chloroplast genome sequence of the avocado: gene organization, comparative analysis, and phylogenetic relationships with other Lauraceae." Canadian Journal of Forest Research 46, no. 11 (November 2016): 1293–301. http://dx.doi.org/10.1139/cjfr-2016-0199.

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Song, Weicai, Zimeng Chen, Wenbo Shi, Weiqi Han, Qi Feng, Chao Shi, Michael S. Engel, and Shuo Wang. "Comparative Analysis of Complete Chloroplast Genomes of Nine Species of Litsea (Lauraceae): Hypervariable Regions, Positive Selection, and Phylogenetic Relationships." Genes 13, no. 9 (August 28, 2022): 1550. http://dx.doi.org/10.3390/genes13091550.

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Litsea is a group of evergreen trees or shrubs in the laurel family, Lauraceae. Species of the genus are widely used for a wide range of medicinal and industrial aspects. At present, most studies related to the gene resources of Litsea are restricted to morphological analyses or features of individual genomes, and currently available studies of select molecular markers are insufficient. In this study, we assembled and annotated the complete chloroplast genomes of nine species in Litsea, carried out a series of comparative analyses, and reconstructed phylogenetic relationships within the genus. The genome length ranged from 152,051 to 152,747 bp and a total of 128 genes were identified. High consistency patterns of codon bias, repeats, divergent analysis, single nucleotide polymorphisms (SNP) and insertions and deletions (InDels) were discovered across the genus. Variations in gene length and the presence of the pseudogene ycf1Ψ, resulting from IR contraction and expansion, are reported. The hyper-variable gene rpl16 was identified for its exceptionally high Ka/Ks and Pi values, implying that those frequent mutations occurred as a result of positive selection. Phylogenetic relationships were recovered for the genus based on analyses of full chloroplast genomes and protein-coding genes. Overall, both genome sequences and potential molecular markers provided in this study enrich the available genomic resources for species of Litsea. Valuable genomic resources and divergent analysis are also provided for further research of the evolutionary patterns, molecular markers, and deeper phylogenetic relationships of Litsea.

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Waleguele, Christine Claire, Marthe Aimée Tchuente Tchuenmogne, Yannick Stéphane Fotsing Fongang, Jules Ngatchou, Jean Jules Kezetas Bankeu, Augustin Silvère Ngouela, Etienne Tsamo, Norbert Sewald, Rui Werner Maçedo Krause, and Bruno Ndjakou Lenta. "Bioguided isolation of antiplasmodial secondary metabolites from Persea americana Mill. (Lauraceae)." Zeitschrift für Naturforschung C 77, no. 3-4 (November 18, 2021): 125–31. http://dx.doi.org/10.1515/znc-2021-0182.

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Abstract The antiplasmodium assay-guided investigation of the roots, stem bark, and leaves of Persea americana Mill. led to the isolation of a new fatty alcohol, perseatriol (1), along with six known compounds (2–7). Their structures were elucidated based on the analysis of their NMR and MS data. All crude extracts and fractions exhibited good antiplasmodial activity on Plasmoduim falciparum 3D7 with IC50 values ranging from 0.76 to 10.5 μg/mL; they also displayed cytotoxicity against HeLa cells with low selectivity indexes (SIs). A preliminary Plasmodium lactate dehydrogenase (pLDH) assay was also performed on the isolated compounds. 9,9′-Di-O-feruloyl-5,5′-dimethoxysecoisolariciresinol (4) turned out to be non-toxic and displayed the best activities on P. falciparum with an IC50 value of 0.05 μM, comparable to the reference drug chloroquine with an IC50 value of 0.03 μM. Furthermore, besides compound 4, this work reports the first isolation of lutein (2) and scopoletin (3) from P. americana. The crude extracts of roots, stem bark, and leaves of P. americana, their fractions and compounds completely suppressed the growth of P. falciparum. The observed activity supports the use of P. americana in folk medicine for the treatment of malaria.

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West, CJ. "Sustainability of Beilschmiedia tawa-Dominated Forest in New Zealand: Population Predictions Based on Transition Matrix Model Analysis." Australian Journal of Botany 43, no. 1 (1995): 51. http://dx.doi.org/10.1071/bt9950051.

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Beilschmiedia tawa (Lauraceae) is a common canopy tree which is often dominant in lowland forests in the North Island and northern South Island of New Zealand. The sustainability of B. tawa-dominated forests was investigated at Pureora Forest Park, west of Lake Taupo, central North Island, where a range of sites with different extents of disturbance by logging was studied. Demographic studies-estimates of seedfall, recruitment, growth, and mortality rates-yielded data for life history tables. Based on these, Leslie matrix models were used to determine the rate of increase of five populations. Of these, three logged populations were apparently declining, whereas unlogged forest showed moderate population increase. These population studies suggested that B. tawa is a K-selected species capable of regeneration only within forest. The smaller size-classes are shade tolerant and stems accumulate in the stripling size-class. High light conditions are needed for growth from this class to the sapling class.

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Freitas, João Da Luz, Raullyan Borja Lima e. Silva, Adriano Castelo dos Santos, Francisco de Oliveira Cruz Júnior, Erick Silva dos Santos, and Maurício Alves Sardinha. "Análise fitossociológica de fragmentos florestais da reserva extrativista do Rio Cajari, norte da Amazônia (Phytosociological analysis of forest fragments of the cajari river extractive reserve, northern amazon)." Revista Brasileira de Geografia Física 10, no. 6 (September 19, 2017): 1875. http://dx.doi.org/10.26848/rbgf.v10.6.p1875-1888.

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O objetivo deste estudo foi analisar a composição florística, diversidade, distribuição diamétrica e estrutura horizontal de fragmentos florestais de terra firme e várzea no trecho médio da Reserva Extrativista do Rio Cajari, município de Mazagão, estado do Amapá. As florestas apresentaram relevante riqueza e diversidade florística. Registraram-se 1068 indivíduos com DAP ≥ 9,5 cm, distribuídos em 29 famílias, 68 gêneros e 84 espécies. A distribuição diamétrica das árvores apresentou-se em forma de “J” invertido, conforme tendência natural das florestas heterogêneas. As famílias Fabaceae, Lecythidaceae, Malvaceae, Chrysobalanaceae e Lauraceae foram as mais representativas em número de espécies, sendo que as espécies com maior valor de importância foram Swartzia polyphylla, Caryocar glabrum, Hevea brasiliensis, Vatairea guianensis e Virola surinamensis. A ampliação dos estudos na Resex é necessária tanto para o auxílio na criação de seu plano de manejo quanto para a subsistência das populações que vivem dentro e no seu entorno. A B S T R A C T The objective of this study was to analyze the floristic composition, diversity, diametric distribution and horizontal structure of forest fragments of firm ground and lowland in the middle section of the Extractivist Reserve of the Cajari River, municipality of Mazagão, state of Amapá. The forests presented significant richness and floristic diversity. There were 1068 individuals with DBH ≥ 9.5 cm, distributed in 29 families, 68 genera and 84 species. The diametrical distribution of the trees was inverted "J", according to the natural tendency of the heterogeneous forests. The families Fabaceae, Lecythidaceae, Malvaceae, Chrysobalanaceae and Lauraceae were the most representative in number of species, being that the species with greater value of importance were Swartzia polyphylla, Caryocar glabrum, Hevea brasiliensis, Vatairea guianensis and Virola surinamensis. The expansion of the studies in Resex is necessary both for the aid in the creation of its management plan and for the subsistence of the populations that live inside and in its surroundings. Keywords: floristic composition, floristic diversity, species trees, horizontal structure.

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Huang, Jian-Feng, Lang Li, Henk van der Werff, Hsi-Wen Li, Jens G. Rohwer, Darren M. Crayn, Hong-Hu Meng, Marlien van der Merwe, John G. Conran, and Jie Li. "Origins and evolution of cinnamon and camphor: A phylogenetic and historical biogeographical analysis of the Cinnamomum group (Lauraceae)." Molecular Phylogenetics and Evolution 96 (March 2016): 33–44. http://dx.doi.org/10.1016/j.ympev.2015.12.007.

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Rosa, S. S. Santa, F. O. Santos, H. G. Lima, I. M. A. Reis, D. S. A. Cassiano, I. J. C. Vieira, R. Braz-Filho, et al. "In vitro anthelmintic and cytotoxic activities of extracts of Persea willdenovii Kosterm (Lauraceae)." Journal of Helminthology 92, no. 6 (October 25, 2017): 674–80. http://dx.doi.org/10.1017/s0022149x17000979.

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AbstractThis study describes the effects of extracts and fractions of Persea willdenovii leaves against goat gastrointestinal nematodes and their cytotoxicity on Vero cells. The in vitro ovicidal and larvicidal activities of the crude ethanolic, hexane, ethyl acetate (EAE), butanolic and residual hydroethanolic extracts were assessed through the inhibition of egg hatching and larval motility assays. The most active extract (EAE) was then fractionated by chromatography in an open column containing silica gel, to furnish six fractions (Fr1–Fr6), which were also tested. The cytotoxicity of active extracts and fractions was determined using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and trypan blue exclusion assay. The EAE and two fractions (Fr1 and Fr2) showed inhibitory activity in the egg hatching of gastrointestinal nematodes of goats in a concentration-dependent manner. The effective concentrations for 50% inhibition (EC50) of egg hatching were 2.3, 0.12 and 2.94 mg/ml for EAE, Fr1 and Fr2, respectively. All extracts and fractions were not effective in inhibiting 50% of motility of infective larvae. EAE and Fr2 had IC50 values (50% inhibitory concentration) of 4.95 and 2.66 mg/ml, respectively. Fr1 showed a slight cytotoxic effect (cellular inviability <30%) only after 48 h of treatment (MTT test). Gas chromatography–mass spectrometry (GC–MS) analysis showed the presence of six fatty acid ethyl esters, a fatty acid methyl ester and a long-chain ketone in the most active fraction. These constituents identified in P. willdenovii can be related to the high ovicidal activity and relatively non-toxic effect of the extracts.

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Mohd Nuzul Hakimi Wan Salleh, Wan, Natasa Mohd Shakri, Mohd Azlan Nafiah, Nurunajah Ab Ghani, Nurulfazlina Edayah Rasol, Nurul Syafiqah Rezali, and Muhammad Haffiz Jauri. "Chemical constituents of the leaves of Actinodaphne pruinosa." Bulletin of the Chemical Society of Ethiopia 36, no. 4 (August 30, 2022): 963–69. http://dx.doi.org/10.4314/bcse.v36i4.20.

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ABSTRACT. This study was designed to investigate the chemical constituents from Actinodaphne pruinosa growing in Malaysia. A phytochemical investigation of the leaves part resulted in the isolation of boldine (1), norboldine (2), laurotetanine (3), reticuline (4), syringaresinol (5), lupeol (6), and taraxerol (7). The structures of the isolated phytochemicals were established by analysis of their spectroscopic data, as well as the comparison with that of reported data. Notably, this is the first time to report the isolation and structural elucidation of the constituents from the leaves part of A. pruinosa. KEY WORDS: Actinodaphne pruinosa, Aporphine, Lauraceae, Phytochemical Bull. Chem. Soc. Ethiop. 2022, 36(4), 963-969. DOI: https://dx.doi.org/10.4314/bcse.v36i4.20

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Zhang, Meng, Tetsukazu Yahara, Shuichiro Tagane, Sukid Rueangruea, Somran Suddee, Etsuko Moritsuka, and Yoshihisa Suyama. "Cryptocarya kaengkrachanensis, a new species of Lauraceae from Kaeng Krachan National Park, southwest Thailand." PhytoKeys 140 (March 4, 2020): 139–57. http://dx.doi.org/10.3897/phytokeys.140.34574.

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A new species of Lauraceae, Cryptocarya kaengkrachanensis M.Z.Zhang, Yahara & Tagane, from Kaeng Krachan National Park, Phetchaburi Province, southwestern Thailand, is described and illustrated. This species is morphologically most similar to C. amygdalina in that its leaves are pinnately veined, leathery, and apparently glabrous (but microscopically hairy) abaxially, twigs are yellowish brown hairy, and fruits are 1.36 to 1.85 times longer than width. However, C. kaengkrachanensis is distinguished from C. amygdalina in having the leaves of ovate and elliptic (vs. oblong-lanceolate) with leaf aspect ratio (length:width) from 1.38 to 2.28 (vs. 2.46–3.43), and ovoid fruits (vs. ellipsoid) with stalk distinctly swollen (vs. not or only slightly swollen). In addition, phylogenetic trees constructed based on internal transcribed spacer sequences (ITS) and genome-wide SNPs using MIG-seq showed that C. kaengkrachanensis is not sister to C. amygdalina and is distinct from all the other Cryptocarya species hitherto recognized in Thailand. Analysis including other species demonstrates that C. floribunda should be a synonym of C. amygdalina, but we recognize C. scortechinii as a distinct species.

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AYTÜRK, Özlem, and Meral ÜNAL. "Structural Analysis of Reproductive Development in Pistillate Flowers of Laurus nobilis L." Notulae Botanicae Horti Agrobotanici Cluj-Napoca 41, no. 2 (December 6, 2013): 361. http://dx.doi.org/10.15835/nbha4129184.

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In Laurus nobilis L. (Lauraceae) the development of female flowers (pistillate), between floral meristem differentiation and fruit formation was inspected through histological sections and SEM techniques. The reproductive development of the female flower starts when the apical meristem converts into a floral meristem. Four tepals, four stamens and a carpel are developed from the floral meristem in turn. Filaments emerge however, anther development is arrested, and stamens become nonfunctional staminodes. The stigma is of the dry type. The solid style being short and thick consists of an epidermis, a cortex, a vascular bundle and a core of transmitting tissue composed of elongated cells. In the style a funnel-shaped zone extending from within the stigma to the stylar base is visible. The presence of high amounts of sugars and lipid substances within and around the vascular bundles are identified by histochemical techniques. The ovary contains an anatropous, bitegmic and crassinucellate ovule. Starch grains are present throughout the development of nucellar tissue. The chalazal region of nuclear endosperm forms a short haustorium. Endosperm does not exist in mature seed; the cotyledons are piled with considerably large starch grains. Idioblasts are observed in all stages of development.

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Journal articles on the topic 'Lauraceae Analysis'

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