Готові списки джерел за темами / Lodicule

Добірка наукової літератури з теми "Lodicule"

Автор: Grafiati

Опубліковано: 6 вересня 2023

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Статті в журналах з теми "Lodicule"

Baum, Bernard R., and L. Grant Bailey. "Morphometric study of three closely related South American species of Hordeum section Stenostachys (Poaceae)." Canadian Journal of Botany 70, no. 3 (March 1, 1992): 496–502. http://dx.doi.org/10.1139/b92-064.

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This study investigates the morphologically distinguishable characteristics of Hordeum santacrucense Parodi et Nicora and Hordeum setifolium Parodi et Nicora, two recently described species from southern South America that are very similar morphologically, and Hordeum patagonicum (Hauman) Covas, also from southern South America and morphologically similar to the above two species. The three entities have not been kept at the species level by some authors. This paper provides the results of a morphological investigation as justification for their retention at the specific level. The character lemma backs pubescent in about half lower part distinguishes H. patagonicum from the other two; the character lodicules glabrous, or with one or two cilia distinguishes H. setifolium from H. santacrucense with ciliate lodicule margins. Key words: South American Hordeum, multivariate analysis, lodicules, taxonomy.

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Baum, Bernard R., and L. Grant Bailey. "Are Hordeum brachyantherum and H. californicum (Triticeae: Poaceae) conspecific?" Canadian Journal of Botany 67, no. 1 (January 1, 1989): 46–52. http://dx.doi.org/10.1139/b89-007.

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Justifications for recognizing H. brachyantherum Nevski and H. californicum Covas as separate species are provided from multivariate morphometric analyses and from lodicule and epiblast characters. Although the range of variation of the latter species is included in the range of the former for most morphometric characters, the two are distinct when all of the characters are in multivariate space. Furthermore, H. brachyantherum is allotetraploid (2n = 4X = 28) and H. californicum is diploid (2n = 2X = 14) as previously reported. Identification to species can be done with a high degree of accuracy by means of the linear classification function coefficients, which after cross validation using the bootstrap method, has been found to be reliable, by the lodicules and epiblasts, or more conclusively by the chromosome number.

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Baum, Bernard R., and L. Grant Bailey. "Taxonomy of the North and South American species of Hordeum section Hordeastrum." Canadian Journal of Botany 64, no. 8 (August 1, 1986): 1745–59. http://dx.doi.org/10.1139/b86-234.

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The four species H. euclaston Steud., H. flexuosum Nees ex Steud., H. intercedens Nevski, and H. pusillum Nutt. have been regarded as conspecific by some authors, because of a lack of markers for distinguishing among the species. Bothmer and co-workers recently recognized the four species but were unable to demonstrate morphological discontinuities that could be used in keys to permit definite identification to species. This paper provides new evidence from lodicule and epiblast characters for existence of four species. A key based on the rachilla, lodicules, and epiblast is presented. Furthermore, carefully defined morphometric characters of the four species were analysed by various discriminant analyses techniques. These analyses confirm the recognition of four morphological species and enable identification by means of resulting discriminant functions in addition to and complementary to the key.

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Yoshida, Hitoshi. "Is the lodicule a petal: Molecular evidence?" Plant Science 184 (March 2012): 121–28. http://dx.doi.org/10.1016/j.plantsci.2011.12.016.

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Zhang, Jun, Hao Zheng, Xiaoqin Zeng, Hui Zhuang, Honglei Wang, Jun Tang, Huan Chen, Yinghua Ling, and Yunfeng Li. "Characterization and Gene Mapping of non-open hull 1 (noh1) Mutant in Rice (Oryza sativa L.)." Agronomy 9, no. 2 (January 28, 2019): 56. http://dx.doi.org/10.3390/agronomy9020056.

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Hull opening is a key physiological process during reproductive development, strongly affecting the subsequent fertilization and seed development in rice. In this study, we characterized a rice mutant, non-open hull 1 (noh1), which was derived from ethylmethane-sulfonate (EMS)-treated Xinong 1B (Oryza sativa L.). All the spikelets of noh1 developed elongated and thin lodicules, which caused the failure of hull opening and the cleistogamy. In some spikelets of the noh1, sterile lemmas transformed into hull-like organs. qPCR analysis indicated that the expression of A- and E-function genes was significantly upregulated, while the expression of some B-function genes was downregulated in the lodicules of noh1. In addition, the expression of A-function genes was significantly upregulated, while the expression of some sterile-lemma maker genes was downregulated in the sterile lemma of noh1. These data suggested that the lodicule and sterile lemma in noh1 mutant gained glume-like and lemma-like identity, respectively. Genetic analysis showed that the noh1 trait was controlled by a single recessive gene. The NOH1 gene was mapped between the molecular markers ZJ-9 and ZJ-25 on chromosome 1 with a physical region of 60 kb, which contained nine annotated genes. These results provide a foundation for the cloning and functional research of NOH1 gene.

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Tang, Caiguo, Huilan Zhang, Pingping Zhang, Yuhan Ma, Minghui Cao, Hao Hu, Faheem Afzal Shah, Weiwei Zhao, Minghao Li, and Lifang Wu. "iTRAQ-based quantitative proteome analysis reveals metabolic changes between a cleistogamous wheat mutant and its wild-type wheat counterpart." PeerJ 7 (June 17, 2019): e7104. http://dx.doi.org/10.7717/peerj.7104.

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Background Wheat is one of the most important staple crops worldwide. Fusarium head blight (FHB) severely affects wheat yield and quality. A novel bread wheat mutant, ZK001, characterized as cleistogamic was isolated from a non-cleistogamous variety Yumai 18 (YM18) through static magnetic field mutagenesis. Cleistogamy is a promising strategy for controlling FHB. However, little is known about the mechanism of cleistogamy in wheat. Methods We performed a FHB resistance test to identify the FHB infection rate of ZK001. We also measured the agronomic traits of ZK001 and the starch and total soluble sugar contents of lodicules in YM18 and ZK001. Finally, we performed comparative studies at the proteome level between YM18 and ZK001 based on the proteomic technique of isobaric tags for relative and absolute quantification. Results The infection rate of ZK001 was lower than that of its wild-type and Aikang 58. The abnormal lodicules of ZK001 lost the ability to push the lemma and palea apart during the flowering stage. Proteome analysis showed that the main differentially abundant proteins (DAPs) were related to carbohydrate metabolism, protein transport, and calcium ion binding. These DAPs may work together to regulate cellular homeostasis, osmotic pressure and the development of lodicules. This hypothesis is supported by the analysis of starch, soluble sugar content in the lodicules as well as the results of Quantitative reverse transcription polymerase chain reaction. Conclusions Proteomic analysis has provided comprehensive information that should be useful for further research on the lodicule development mechanism in wheat. The ZK001 mutant is optimal for studying flower development in wheat and could be very important for FHB resistant projects via conventional crossing.

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Kosina, Romuald. "Patterns of flower microstructural variation within the genus Bromus." Acta Societatis Botanicorum Poloniae 68, no. 3 (2014): 221–26. http://dx.doi.org/10.5586/asbp.1999.030.

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Twenty five species from four sections of the genus Bromus were evaluated by means of numerical analyses of characters of flower microstructures (lodicule, lemma, palea). Special development of lodicules (lobe and hairiness) and both glumellae (lemma and palea) similar in grasses evolutionarily close (Bromeae, Brachypodieae, Triticeae) was discovered. For most of the characters the original interspecific and intersectional relations were observed in a space of minimum spanning tree (MST). The evolutionary old section Pnigma occupies the largest space. Species of Pnigma having small chromosomes can be distinguished from those having large ones. The section Ceratochloa is scattered through the smallest space. The above points to the endemic evolution of high polyploids of the section. The sections Bromus and Genea are evolutionarily close and they distinctly overlap each other in the MST space. Bromus sterilis, B. catharticus and B. riparius are extremes in their own sections.

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Lucía, Víctor, Enrique Rico, Kesara Anamthawat-Jónsson, and M. Montserrat Martínez-Ortega. "Cytogenetic evidence for a new genus of Triticeae (Poaceae) endemic to the Iberian Peninsula: description and comparison with related genera." Botanical Journal of the Linnean Society 191, no. 4 (November 11, 2019): 523–46. http://dx.doi.org/10.1093/botlinnean/boz068.

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Abstract Thinopyrum curvifolium, a halo-gypsophyte endemic to the Iberian Peninsula, has an uncertain cytogenetic composition. Moreover, it is often confused with other species of the genus due to morphological resemblance. In this study, we analyse its genomic composition using in situ hybridization and study lodicule morphology and foliar anatomy, to identify distinguishing traits of the species in comparison with the remaining representatives of Thinopyrum in the Iberian Peninsula and the Balearic Islands. In situ hybridization data support the genomic formula 2n = 4x = 28, EbP. Lodicule morphology and foliar anatomy proved helpful in characterizing the species. These new discoveries, in addition to the macromorphological data compiled, support the contentions that (1) T. curvifolium should be segregated from Thinopyrum sensu D.R.Dewey, and (2) a new cytogenetically based genus should be proposed in order to classify the species properly according to the cytogenetically based criteria traditionally proposed for the classification of Triticeae. Therefore, we hereby propose a new genus named Pauneroa gen. nov., including the new nomenclatural combination Pauneroa curvifolia comb. nov., and provide a detailed iconography of the plant, macroscopically comparing the genus with closely related genera.

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Ning, Shunzong, Ning Wang, Shun Sakuma, Mohammad Pourkheirandish, Takato Koba, and Takao Komatsuda. "Variation in the wheat AP2 homoeologs, the genes underlying lodicule development." Breeding Science 63, no. 3 (2013): 255–66. http://dx.doi.org/10.1270/jsbbs.63.255.

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Prasad, Kalika, and Usha Vijayraghavan. "Double-Stranded RNA Interference of a Rice PI/GLO Paralog, OsMADS2, Uncovers Its Second-Whorl-Specific Function in Floral Organ Patterning." Genetics 165, no. 4 (December 1, 2003): 2301–5. http://dx.doi.org/10.1093/genetics/165.4.2301.

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Abstract Unlike many eudicot species, grasses have duplicated PI/GLO-like genes. Functional analysis of one of the rice PI/GLO paralogs, OsMADS2, is reported here. Our data demonstrate its essential role in lodicule development and implicate the second PI/GLO paralog, OsMADS4, to suffice for stamen specification. We provide the first evidence for differential contributions of grass PI/GLO paralogs in patterning second- and third-whorl floral organs.

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Більше джерел

Частини книг з теми "Lodicule"

"Lodicule." In Encyclopedia of Genetics, Genomics, Proteomics and Informatics, 1118. Dordrecht: Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6754-9_9539.

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"lodicule, n." In Oxford English Dictionary. 3rd ed. Oxford University Press, 2023. http://dx.doi.org/10.1093/oed/2292253330.

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