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Artykuły w czasopismach na temat "Urticaceae"
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Masias, MA, i RG Positano. "Urticaceae poisoning". Journal of the American Podiatric Medical Association 80, nr 11 (1.11.1990): 613–16. http://dx.doi.org/10.7547/87507315-80-11-613.
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LIN, Qi, Lin-Dong DUAN, Zhi-Rong YANG i Yu-Min SHUI. "Notes onElatostemasectionAndrosyceWedd. (Urticaceae)". Journal of Systematics and Evolution 49, nr 2 (marzec 2011): 163. http://dx.doi.org/10.1111/j.1759-6831.2011.00121_4.x.
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Gaglioti, André Luiz, Renata Jimenez de Almeida-Scabbia i Sergio Romaniuc-Neto. "Flora das cangas da Serra dos Carajás, Pará, Brasil: Urticaceae". Rodriguésia 67, nr 5spe (2016): 1485–92. http://dx.doi.org/10.1590/2175-7860201667554.
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Resumo Este estudo engloba as espécies de Urticaceae registradas nas vegetações de cangas da Serra dos Carajás, Pará, trazendo descrições detalhadas, ilustrações e comentários morfológicos das espécies. Foram encontrados cinco gêneros e sete espécies de Urticaceae para a área de estudo.
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LIN, QI. "A revision ofElatostemasectionWeddeliaseriesSalvinioida(Urticaceae)". Botanical Journal of the Linnean Society 158, nr 1 (wrzesień 2008): 62–66. http://dx.doi.org/10.1111/j.1095-8339.2008.00848.x.
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Wilmot-Dear, M. "Debregeasia (Urticaceae): A Correction". Kew Bulletin 44, nr 4 (1989): 702. http://dx.doi.org/10.2307/4110432.
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Hadiah, Julisasi T., Barry J. Conn i Christopher J. Quinn. "Infra-familial phylogeny of Urticaceae, using chloroplast sequence data". Australian Systematic Botany 21, nr 5 (2008): 375. http://dx.doi.org/10.1071/sb08041.
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Recent studies of the phylogeny of the Urticales have suggested that Cecropiaceae, at least in part, should be included within Urticaceae. To evaluate phylogenetic relationship between these two taxa, together with the consequences on tribal concepts (of the Urticaceae) of including any part of Cecropiaceae within Urticaceae, we analysed sequence variation for larger databases of both rbcL and trnL-F sequences. We conclude that the circumscription of Urticaceae needs to be broadened to include taxa of Cecropiaceae, with Urticeae here expanded to include Poikilospermum. The tribal placement of Cecropia and Coussapoa (both Cecropiaceae) remains unclear but their affinities are with the Forsskaoleeae, Parietarieae and Boehmerieae. The circumscription of Boehmerieae should be changed to exclude Myriocarpa, with the latter genus exhibiting a strong relationship with Elatostemeae. The intratribal structure of the Elatostemeae is unclear because of the uncertainty of the position of Myriocarpa, but there is a strong suggestion that the tribe consists of two sister taxa, one of Elatostemeae sensu stricto, including Elatostema and Procris, and the other consisting of Lecanthus and Pilea. It is reconfirmed that Pellionia should not be recognised as a distinct genus and is here regarded as a synonym of Procris, rather than part of the synonymy of Elatostema, as previously suggested. Boehmeria, Cypholophus and Laportea as currently circumscribed are all paraphyletic. There are three evolutionary lineages in the Urticaceae revealed by our study, namely (1) Boehmeriea–Cecropieae–Forsskaoleeae–Parietarieae, (2) Urticeae and (3) Elatostemeae.
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Nascimento, Michele Do, Luana Minello, Elizete Maria Pesamosca Facco, Catia Santos Branco, Valdirene Camatti Sartori i Gabriela Chilanti. "AVALIAÇÃO DA COMPOSIÇÃO NUTRICIONAL, TEOR POLIFENÓLICO E ATIVIDADE ANTIOXIDANTE DE DIFERENTES ESPÉCIES DA FAMÍLIA URTICACEAE". Revista Internacional de Ciências 11, nr 2 (31.08.2021): 243–60. http://dx.doi.org/10.12957/ric.2021.53579.
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O interesse pelo estudo das “Plantas Alimentícias Não Convencionais- PANC’s” vem crescendo, impulsionado, principalmente, pela tendência crescente de consumo pela população. Esse é o caso da família Urticaceae, a qual possui espécies descritas por possuírem propriedades nutritivas e que podem ser agregadas em produtos como um alimento funcional. Apesar dessas evidências, os estudos acerca da composição química e propriedades biológicas dessa família ainda são escassos. Nesse contexto, o objetivo do presente estudo foi avaliar a composição nutricional, a atividade antioxidante, o teor de fenólicos totais e compostos majoritários de quatro espécies da família Urticaceae (Boehmeria caudata Sw, Urera baccifera (L.) Gaudich. ex Wedd., Urtica circularis (Hicken) Sorarú e Urtica dioica (L.) coletadas no sul do Brasil. Os resultados mostraram que a espécie U. baccifera foi a que apresentou o maior teor de umidade (11,02 %) e de fibra alimentar (43,85 %). A espécie U. circularis apresentou o maior teor de minerais totais (20,95 %) e de proteína (26,6 %), enquanto que a B. caudadta obteve maior teor de carboidrato (7,64 %). Com relação ao teor de fenólicos totais observou-se maior conteúdo para as espécies B. caudata e U. dioica (274,92 ± 6,05 e 260,84 ± 8,56 mg GAE/ g, respectivamente), sendo a hesperidina o flavonoide majoritário, detectado na espécie U. bacccifera (116,49 ± 0,94 µg/mL). Tomados em conjunto, os resultados demonstram que as espécies da família Urticacea, tipicamente conhecidas pelas suas propriedades urticantes, podem ser consideradas boas fontes de nutrientes e de compostos bioativos com capacidade antioxidante.
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Varandi, Forough Ranjbar, Karim Haddad Irani-nejad i Parisa Lotfollahi. "Two new eriophyid species (Acariformes: Eriophyidae) from North of Iran". Systematic and Applied Acarology 25, nr 7 (4.07.2020): 1178–87. http://dx.doi.org/10.11158/saa.25.7.2.
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This paper includes descriptions and illustrations of two new species namely Leipothrix mazandaranicus sp. nov. and Aceria punicae sp. nov. found on Urtica dioica L. (Urticaceae) and Punica granatum L. (Lythraceae), respectively, in Sari county, Mazandaran province, North of Iran. They are the second Leipothrix species from the plants of family Urticaceae and the second Aceria species from plants of the genus Punica.
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Sharma, Ashutosh, S. Noorunnisa Begum, G.S. Goraya, Gopal S. Rawat i Vaneet Jishtu. "Three new additions to the flora of Himachal Pradesh, India from Khokhan Wildlife Sanctuary, Kullu District". Journal of Threatened Taxa 15, nr 12 (26.12.2023): 24402–8. http://dx.doi.org/10.11609/jott.8647.15.12.24402-24408.
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Chamabainia cuspidata Wight (Urticaceae), Debregeasia orientalis C.J.Chen (Urticaceae), and Hydrocotyle himalaica P.K.Mukh. (Araliaceae) are being reported here as new additions to the flora of Himachal Pradesh, India. All three species were collected from Khokhan Wildlife Sanctuary in Kullu district. Of these, H. himalaica also forms an addition to the flora of western Himalayan region. Detailed description, distribution, information on habitat and colour photographs of all three species are provided for easy identification in the field.
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STONIS, JONAS R., ARŪNAS DIŠKUS, ALEXANDRE K. MONRO, XIAOHUA DAI i JIASHENG XU. "Most trumpet moths don’t feed on plants of the nettle family but Paratischeria does: the first discovery of Tischeriidae (Lepidoptera) on Urticaceae in Asia". Zootaxa 5040, nr 2 (21.09.2021): 247–64. http://dx.doi.org/10.11646/zootaxa.5040.2.5.
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This is the first record of Urticaceae-feeding trumpet moths (Tischeriidae) from Asia. We describe Paratischeria boehmerica Diškus & Stonis, sp. nov. and P. grossa Diškus & Stonis, sp. nov., two distinctive new species of Tischeriidae recently discovered from Laos, South East Asia, feeding on plants of the nettle family. Urticaceae is a rare host-plant family for leaf-mining Tischeriidae worldwide. The new species are illustrated with photographs of the adults, male and female genitalia, and the leaf mines.
Rozprawy doktorskie na temat "Urticaceae"
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Hadiah, Julisasi Tri Biological Earth & Environmental Sciences Faculty of Science UNSW. "Systematics of Elatostema (Urticaceae)". Awarded by:University of New South Wales, 2007. http://handle.unsw.edu.au/1959.4/39207.
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Elatostema J.R.Forst. & G.Forst. (Urticaceae) is a taxonomically problematic genus of approximately 300 species that is widespread throughout the tropical, subtropical and sub-temperate regions of Africa through to SE Asia, Australasia to Polynesia. Morphological and molecular analyses were conducted to evaluate the infra-familial classification of the Urticaceae, to test the monophyly of Tribe Elatostemeae, to define generic limits of Elatostema and assess its relationship within the tribe, and to examine the current infrageneric grouping within Elatostema. Phylogenetic analyses based on choloroplast DNA sequences of rbcL and trnL-F do not provide support for the monophyly of Urticaceae, because of the position of Poikilospermum (currently Cecropiaceae) within the tribe Urticeae. Although the status of Cecropiaceae is equivocal, there is support for the inclusion of this family in the Urticaceae, with Cecropia and Coussapoa (Cecropiaceae) having close affinities to the Boehmerieae and Parietarieae. The phylogenetic position of Myriocarpa is unresolved, but is excluded from the Boehmerieae, as currently classified. The Elatostemeae is paraphyletic with Pilea placed sister to the Urticeae. Evaluation of the infrageneric classification of Elatostema, based on phylogenetic analyses of both morphological and molecular data (trn and ITS) does not support the current subgeneric classification as proposed by Schr??ter and Winkler (1935, 1936). The analyses support two main infrageneric grouping: (1) a group consisting of Elatostema subg. Pellionia and Procris, and (2) a group consisting of the remaining members of Elatostema (including E. griffithianum ??? subg. Pellionia). The molecular data are regarded as a more accurate estimate of the phylogeny than provided by morphology, with molecular data having a higher Rescaled Consistency Index on the most parsimonious trees, together with a much greater level of resolution and support than that of the morphological analyses.
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Monro, Alexandre K. "Taxonomy of pilea (urticaceae)". Thesis, Oxford Brookes University, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.444327.
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Beaman, Reed S. "Phylogeny and biogeography of Elatostema (Urticaceae) from Mount Kinabalu, Sabah, Malaysia". [Florida] : State University System of Florida, 2000. http://etd.fcla.edu/etd/uf/2000/amt2439/beaman%5Fr.pdf.
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Thesis (Ph. D.)--University of Florida, 2000.Title from first page of PDF file. Document formatted into pages; contains ix, 264 p.; also contains graphics. Vita. Includes bibliographical references (p. 255-262).
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Lahav-Ginott, Shimrit. "Characteristics of dioecy in nettles (Urticaceae)". Thesis, University of Cambridge, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336763.
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Gindri, Amanda Leitao. "ANÁLISE FITOQUÍMICA DAS RAIZES E FOLHAS, E MORFO-ANATÔMICA DOS CAULES E FOLHAS DE Urera baccifera GAUDICH". Universidade Federal de Santa Maria, 2012. http://repositorio.ufsm.br/handle/1/5908.
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The plant Urera baccifera Gaudich, known as stinging nettle, had its leaves and roots used to urinary infections and arthritis. Studies about its anti-inflammatory activities already exist, but are few the studies about their chemical constituents. Due the shortage of dates, this study aim to realize an qualitative and quantitative photochemistry analysis, and antioxidant activity of the plant roots and leaves, beyond realize a morphoanatomic and hystochemical study its leaves and stems. In the qualitative analysis were obtained positive results to aminogroups, anthocyanins, anthocyanidins and flavonoids, steroids, phenols with free para positions, coumarins, saponins and organic acids in the leaves and the roots. In the qualitative analysis the plant showed significant values of phenolic compounds, flavonoids, alkaloids and condensed tannins, mainly in the chloroform fraction of leaves and roots. The crude extract of both part of the plant presented a moderated antioxidant activity. An expressive concentration of oxalic acid was quantified in the roots, indicating toxicity. The morphological analysis of steams and leaves showed stinging, simple tectores and glandular trichomes, cistolits in the epidermis and abundant presence of drusen-type crystals of calcium oxalate besides that elucidate the inner structure of the plant tissues. In the hystochemical tests were presented in the different vegetative organs, substances which form cell walls, reserve substances and secondary metabolites, like phenolic compounds, lipids, terpenoids and cetosteroids, tannins and serotonin. More studies will be realized with Urera baccifera roots, stems and leaves, to elucidate its chemical composition and toxic potential.A planta Urera baccifera Gaudich, conhecida como Urtiga-Brava, tem suas folhas e raízes utilizadas para infecção urinária e artrite. Já existem estudos sobre sua atividade antiinflamatória, mas poucos são os estudos a respeito de sua composição química. Devido à escassez de dados, este estudo visa realizar uma análise fitoquímica qualitativa e quantitativa, e avaliar a atividade antioxidante das raízes e folhas da planta, além de realizar um estudo morfo-anatomico e histoquímico das folhas e caules. Na análise qualitativa foram obtidos resultados positivos para aminogrupos, antocianinas, antocianidinas e flavonóides, esteróides, fenóis com posição para livres, cumarinas, saponinas e ácidos orgânicos nas folhas e raízes. Na analise qualitativa a planta mostrou valores significantes de compostos fenólicos, flavonoides, flavonóis, alcaloides e taninos condensados principalmente na fração clorofórmio das folhas e raízes. O extrato bruto das duas partes da planta demonstraram uma moderada atividade antioxidante. Foi quantificado numa concentração expressiva, ácido oxálico nas raízes, indicando toxicidade. A análise da morfologia dos caules e folhas evidenciou tricomas urticantes, tectores simples e glandulares, cistólitos na epiderme e presença abundante de cristais do tipo drusas de oxalato de cálcio, além de elucidar a estrutura interna dos tecidos da planta. Nos testes histoquímicos foram evidenciados nos diferentes órgãos vegetativos, substâncias que formam as paredes celulares, substâncias de reserva e metabólitos secundários, como compostos fenólicos, lipídios, terpenóides e cetoesteróides, taninos e serotonina. Mais estudos serão realizados com raízes, caules e folhas de Urera baccifera, a fim de elucidar sua composição química e analisar seu potencial tóxico.
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Große-Veldmann, Bernadette [Verfasser]. "Systematics, Taxonomy, and Evolution of Urtica L. (Urticaceae) / Bernadette Große-Veldmann". Bonn : Universitäts- und Landesbibliothek Bonn, 2017. http://d-nb.info/1132711452/34.
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Pedersoli, Giseli Donizete. "Morfologia, desenvolvimento e aspectos da flor em espécies de Urticaceae Juss". Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/59/59139/tde-08012018-143400/.
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A maioria dos representantes de Urticaceae, a família da urtiga, exibe flores díclinas, muito pequenas e discretas, que variam em número de peças florais, principalmente em relação ao perianto e androceu (perda ou união de órgãos). Gineceu pseudomonômero, ou seja, iniciação de dois ou raramente três carpelos no meristema floral, mas com apenas um carpelo contendo óvulo, é descrito para a família. Outra característica interessante com registro para a família é a presença de pistilódio nas flores estaminadas. O objetivo deste trabalho é estudar comparativamente a morfologia da flor em desenvolvimento de espécies de diferentes tribos de Urticaceae, a fim de compreender: (1) as vias que levam à grande redução floral exibida pelo grupo, (2) se o desenvolvimento pode explicar a formação do gineceu com ovário unilocular, uniovulado, provavelmente pseudomonômero, e (3) a estrutura do pistilódio nas flores estaminadas e sua função na anemofilia. Para tal, foram selecionadas 10 espécies pertencentes a cinco tribos da família Urticaceae, com exceção da tribo Forsskaoleeae. Ainda, para o estudo comparativo do pistilódio foram amostradas duas espécies de Cannabaceae (Celtis iguanaea e Trema micrantha) e uma de Moraceae (Morus nigra). Botões florais e flores foram coletados de pelo menos dois indivíduos de cada espécie e processados para exames de superfície, anatômico e de vascularização em micro-CT. Em todas as espécies estudadas, com exceção da flor pistilada de Phenax sonneratii, há a iniciação de órgãos de apenas um verticilo do perianto; a variação na meria do perianto (2-5) resulta de ausência de órgãos desde o início do desenvolvimento. A diclinia decorre de ausência de estames desde o início do desenvolvimento na flor pistilada, com exceção de Pilea cadierei (aborto de estames), e de aborto do pistilo nos estádios intermediários do desenvolvimento na flor estaminada, com exceção de Cecropia pachystachya e Coussapoa microcarpa. O gineceu pseudomonômero é atestado pela iniciação de um primórdio carpelar que se divide em dois em Cecropia pachystachya, Coussapoa microcarpa, Laportea aestuans, Myriocarpa stipitata, Pourouma cecropiifolia, Urera baccifera e Urtica dioica; em Boehmeria cylindrica, Phenax sonneratii e Pilea cadierei não ocorre essa divisão do primórdio carpelar. Os estudos de vascularização revelaram que em todas as espécies apenas um traço vascular entra no gineceu, ramifica-se em dois logo na porção basal, sendo que um entra no óvulo e o outro segue para o estilete e estigma; exceção a isso ocorre em Myriocarpa stipitata e Urtica dioica, em que entram dois traços vasculares, um se ramifica em dois, sendo que um entra no óvulo e o outro segue para o estilete e estigma, e o outro segue direto para o estilete e estigma. Essa segunda condição seria o esperado para gineceu pseudomonômero. Pistilódios estão presentes nas flores estaminadas de Boehmeria cylindrica, Myriocarpa stipitata, Laportea aestuans, Urera baccifera e Urtica dioica (Urticaceae), Celtis iguanaea e Trema micrantha (Cannabaceae), e Morus nigra (Moraceae), e rudimentos carpelares nas de Phenax sonneratii e Pilea cadierei (Urticaceae);. O pistilódio, juntamente com as sépalas e os estames, formam um aparato que atua no mecanismo de liberação explosiva de pólen a ser transportado pelo vento. Este aparato é considerado aqui como uma sinorganização floral, sem que haja união verdadeira de tecidos, que deve otimizar a anemofilia, de modo que o pólen alcance distâncias maiores, evitando autopolinização e garantindo maior variabilidade genética para essas espéciesMost species of Urticaceae, the nettle family, exhibit very small and inconspicuous diclinous flowers, which vary in number of organs, mainly in relation to the perianth and androecium (loss or union of organs). Pseudomonomerous gynoecium, that is, initiation of two or rarely three carpels in the floral meristem, but with only one carpel containing ovule, is described for the family. Another noteworthy characteristic reported for the family is the presence of a pistillodium in staminate flowers. The objective of this work was to study the morphology of the developing flower of different species of Urticaceae in order to better understand: (1) the vias that lead to a great floral reduction exhibited by the group, (2) if the development may explain the formation of a pseudomonomerous gynoecium, and (3) the pistillodium structure in staminate flowers and its function in the anemophily. For this, 10 species belonging to five tribes of the family were selected, except the Forsskaoleeae tribe. In addition, flowers of two Cannabaceae species (Celtis iguanaea and Trema micrantha) and one Moraceae species (Morus nigra) were sampled. Buds and flowers were collected and prepared for examination under scanning electron microscopy and light microscopy. Vascularization was also studied by means of a micro-CT. In all studied species, except for the pistillate flower of Phenax sonneratii, organs of only one whorl of the perianth initiate; the variation in the merosity of the perianth (2-5) results from absence of organs from the beginning of development. The dicliny results of the absence of stamens from the beginning of development in pistillate flower, except for Pilea cadierei (stamen abortion), and pistil abortion occurs in the intermediate stages of development in the staminate flower, with the exception of Cecropia pachystachya and Coussapoa microcarpa. The pseudomonomerous gynoecium is characterized by the initiation of a carpel primordium that divided into two in Cecropia pachystachya, Coussapoa microcarpa, Laportea aestuans, Myriocarpa stipitata, Pourouma cecropiifolia, Urera baccifera and Urtica dioica; in Boehmeria cylindrica, Phenax sonneratii and Pilea cadierei apparently does not occur a division of the carpel primordium. Vascularization studies showed that in all species a vascular bundle enters the gynoecium, branching in two soon in the basal portion, one goes to the ovule and the other goes to the style and stigma; exceptions are Myriocarpa stipitata and Urtica dioica, in which two vascular bundles enter the pistil: one branches in two, one enters the ovule and the other goes to the style and stigma, and the other goes straight to the style and stigma. This second condition would be expected for a pseudomonomerous gynoecium. Pistillodium are present in the staminate flowers of Boehmeria cylindrica, Myriocarpa stipitata, Laportea aestuans, Urera baccifera and Urtica dioica (Urticaceae), Celtis iguanaea and Trema micrantha (Cannabaceae); and Morus nigra (Moraceae). rudimentary carpels were observed in Phenax sonneratii and Pilea cadierei (Urticaceae); The pistillodium, together with the sepals and stamens, forms an apparatus that acts on the mechanism of explosive release of pollen to be carried by the wind. This apparatus is here considered as a floral synorganization, without a true union between tissues, that should optimize the anemophily, so that the pollen can reache greater distances, avoiding selfpollination and guaranteeing greater genetic variability for these species
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LE, GOUALLEC JEAN LUC. "Effets de forts eclairements sur la photosynthese de elatostema repens (urticaceae)". Paris 6, 1989. http://www.theses.fr/1989PA066303.
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Elatostema repens, plante de sous bois des forets tropicales humides de la peninsule malaise, a ete exposee a des eclairements eleves (1/3 du plein soleil) donnee de maniere continue, pour simuler l'apparition d'un chablis, ou sequencee, pour simuler les taches de lumiere. Ces expositions conduisent immediatement a une photoinhibition de la photosynthese. Celle-ci apparait selon deux phases. Durant la premiere, avant une heure d'exposition au fort eclairement, il se produit une diminution du rendement quantique independant de l'activite psii. La reparation d'une ou plusieurs proteines psii, grace a un stock de mrna protege alors mieux le psii qu'une dissipation thermique de l'energie d'excitation qui se produit egalement. La seconde phase de photoinhibition est ensuite reliee a une destruction de centres psii. Contraitement aux autres plantes precedemment etudiees, elastostema repens est sensibilisee a la photoinhibition par la presence d'oxygene. De plus, cette espece s'est revelee sensibilisee a la photoinhibition par les forts deficits hydriques foliaires. Il est conclu que, in situ, la photoinhibition doit avoir un effet negatif important lors de l'apparition de chablis mais rarement lors des taches de lumiere
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Marina, Francišković. "Fitohemijska karakterizacija i biološka aktivnost odabranih vrsta tribusa Urticeae i Parietarieae (Urticaceae Juss.)". Phd thesis, Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, 2015. https://www.cris.uns.ac.rs/record.jsf?recordId=94950&source=NDLTD&language=en.
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U okviru ove doktorske disertacije ispitan je hemijski sastav i biološke aktivnosti metanolnih i vodenih ekstrakata odabranih samoniklih vrsta tribusa Urticeae, rod Urtica: U. dioica subsp. dioica var. pubescens, U. dioica subsp. dioica var. dioica i U. kioviensis i tribusa Parietarieae, rod Parietaria: P. officinalis, P.lusitanica L. subsp. lusitanica, P. judaica L. subsp. judaica i P. serbica. Cilj rada bio je da se odredi sadrţaj biološki aktivnih jedinjenja u ovim, do sada veoma malo ispitanim vrstama famijije Urticaceae, i utvrdi njihov potencijal primene kao pomoćnih lekovitih sredstava i dodataka ishrani.Hemijski sastav ekstrakata ispitivanih vrsta određen je primenom: tečnohromatografskih tehnika (LC-DAD-MS i LC-MS-MS) za kvalitativnu analizu metanolnih ekstrakata, dok je za kvantitativnu analizu odabranih fenolnih jedinjenja primenjena LC-MS-MS tehnika. Spektrofotometrijskim metodama je određen sadržajukupnih fenolnih komponenti i flavonoida. Ispitivanja bioloških aktivnosti ekstrakata obuhvatila su: određivanje antioksidantne i antiinflamatorne aktivnosti kao i sposobnost ekstrakata da inhibiraju acetilholinesterazu. Određen je uticaj odabranih metanolnih ekstrakata na imuni odgovor i proliferaciju intestinalnih ćelijskih linija pacova (IEC18) i ĉoveka (Caco2).Dobijeni rezultati ukazuju da odabrane vrste tribusa Urticeae i Parietarieae, odnosno rodova Urtica i Parietaria predstavljaju bogate izvore biološki aktivnih jedinjenja koja ispoljavaju raznovrsne biološke aktivnosti. Sa hemotaksonomskog aspekta izdvajaju se sledeća jedinjenja kao potencijalni taksonomski markeri: viši sadržaj 5-O-kafeoilhinske kiseline u ekstraktima herbi vrsta roda Urtica, i visok sadrţajepikatehina u ekstraktima korena vrsta roda Parietaria. Ekstrakt herbe vrste U. kioviensis se od ostalih izdvaja po tome što ne sadrži rutin a sadrži C-glikozide, u najvećoj meri viteksin. Od svih ispitivanih ekstrakata, ekstrakti korena Parietaria vrsta su ispoljili najbolji antioksidantni potencijal u većini izvršenih testova. Najsnažniji antiinflamatorni potencijal je ispoljio ekstrakt korena vrste P. officinalis a prate ga ekstrakti korena vrsta roda Urtica. Veoma dobar antiinflamatorni potencijal su ispoljili infuzi herbi vrste U. dioica (čajevi od koprive). Svi ispitani metanolni ekstrakti su ispoljili odličnu inhibiciju enzima acetilholinesteraze a kao najbolji se izdvajaju ekstrakti korena Parietaria vrsta i vrste U. kioviensis. Povećanu sekreciju citokina rat MCP1 i GROα izazivaju ekstrakti korena vrsta P. officinalis i P. judaica ubazalnim uslovima i uslovima LPS-stimulisane inlamacije, dok ekstrakti vrste U. dioica povećavaju bazalnu a smanjuju LPS-stimulisanu sekreciju. Stimulaciju sekrecije ova dva citokina, ispitivani ekstrakti vrše interakcijom sa adapternim proteinom MyD88 (ali ne intereaguju sa TLR4 receptorom) i NF -κB signalnimputem. Ekstrakt korena vrste P. officinalis povećava LPS-om indukovanu ekspresiju enzima COX-2 u IEC18 ćelijama, dok je ekstrakt korena vrste U. dioica smanjuje. Efekat epitelizacije ili zarastanja rane na monosloju IEC18 ćelija ispoljavaju ekstrakti herbe i korena vrste P. officinalis. Ispitivani ekstrakti ne menjaju značajno seksreciju citokina hMCP1 i IL-8 u Caco2 ćelijama niti ispoljavaju značajan uticaj na njihovu proliferaciju.Within this doctoral thesis the chemical composition and biological activity of methanol and aqueous extracts of the selected plant species belonging to the Urticeae and Parietarieae tribe, more specifically to the Urtica and Parietaria genuses was evaluated (Urtica: U. dioica subsp. dioica var. pubescens, U. dioica subsp. dioica var. dioica and U. kioviensis; Parietaria: P. officinalis, P. lusitanica subsp. lusitanica, P. judaica subsp. judaica and P. serbica). The principal aim was to determine the content of biologically active compounds in this, poorlyexamined species of the Urticaceae family, and determine their potential as additional remedy and dietary supplements.Qualitative analysis of methanol extracts was performed by LC-DAD-MS i LC-MS/MS analysis, and LC-MS/MS for quantitative analysis of selected phenolic compounds. Total phenolics and flavonoids were determined spectrophotometrically. In order to assess the biological potential, the antioxidant and anti-inflammatory activities of the extracts were studied as well as their ability to inhibit acetylcholinesterase. The immuno-modulatory effects of the selected methanol extract on the immune response and proliferation of intestinal epithelial cells (IEC18 and Caco2)was determined.The obtained results suggest that the examined species of the Urticeae and Parietarieae tribe (genuses Urtica and Parietaria) are abundant with the biologically active compounds that express a broad spectrum of biological activities. As a potential chemotaxonomic markers stand out the following compounds: 5-O-caffeoilquinic acid (highly abundant in the herb extracts of the Urtica spp.) and epicatechin (highly abundant in the root extracts of the Parietaria spp.). U.kioviensis herb extracts differs from the rest by high content of vitexin and total lack of rutin. The best antioxidant potential have exhibited the root extracts of the Parietaria species. The strongest anti-inflammatory potential had the root extract of the P. officinalis, followed by root extracts of the Urtica spp. Excellent anti-inflammatory activity have exhibited the aqueous extracts of U. dioica herbs – stinging nettle teas. All tested methanol extracts have inhibited enzyme acetylcholinesterase, the best inhibitors being root extracts of U. kioviensis and Parietaria species. Root extracts of P. officinalis and P. judaica have increased the basal and LPS-stimulated secretion of rat MCP1 and GROα, while U. dioica extracts increased the basal but decreased the LPS-stimulated secretion. The examined extracts interact with the MyD88 (but not the TLR4) and NF-κB signaling pathway. The root extract of P. officinalis increase LPS-stimulated expression of COX-2 in IEC18 cells, while the root extract of U. dioica decreases it.The herb and root extract of P. officinalis exhibit the wound healing effect. Investigated extracts do not significantly alter the secretion of hMCP1 and IL-8 in Caco2 cells and exhibit no significant effect to their proliferation.
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Pereira, Carla Karine Barbosa. "Determinação dos constituintes químicos e avaliação das atividades biológicas da espécie Cecropia pachystachyaTrécul (Urticaceae)". Universidade Federal da Paraíba, 2015. http://www.repositorio.ufal.br/handle/riufal/1814.
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The Cecropia genus consists of about 60 species, widely distributed, mainly in Argentina, Brazil, Mexico and Paraguay. Generally the species of this genus are found in secondary forest trees with heights between 5 and 25 meters. The species of this genus are known in Brazil by several common names, including, embaúba, imbaúba, umbaúba and embaúva. The popular use of these species is associated with teas, employed in the treatment of respiratory diseases, hypertension, glycemic control and as a diuretic. Some biological activities have been described for the species, such as: cardiovascular effects, hypoglycemic effect, sedative effect, antioxidant and anti-inflammatory action.The objective of this study was to isolate and identify the active principles of Cecropia pachystachyaspecies and evaluate the allelopathic and antioxidant activities of ethanol extracts from different parts of the plant, in order to obtain a product. The allelopathic assays were performed against Lactuca sativa, to evaluate changes in seed germination and development of seedling growth. The antioxidant activity was evaluated by the scavenging capacity of DPPH•at peroxidation protective effect of the lipid membrane and the iron reduction capacity, and also determined the content of phenolic compounds and quantification of flavonoids.The study of the chemical species was performed by the isolation and identification of compounds originating from the ethanol extracts by the use of chromatographic and spectroscopic techniques; standardization of a method of obtaining the triterpene tormêntico acid and seasonal evaluation of this chemical constituent present in the extracts. The results indicate that ethanol extracts of C. pachystachya, have inhibitory effect on the germination and growth of L. sativa and have potent antioxidant capacity. Moreover, extracts have high levels of flavonoids and phenolic compounds.In the chemical analysis of the ethanol extracts, it was possible to isolate and elucidate 4 substances, tormêntico acid, acetylated tormêntico acid and two other substances, called ISI and FR2. The method of production and isolation of tormêntico acid was standardized and observed seasonal variation, showing that the month of increased production of the compound was in may 2014, and the part of the plant has the highest production of the substance is the root, and the extracts cold. Due to all the presented activities and chemical identification of classes of compounds and substances for this species, it may be considered as an important renewable source of these substance.Fundação de Amparo a Pesquisa do Estado de Alagoas
O gênero Cecropia é composto por cerca de 60 espécies, com ampla distribuição, principalmente na Argentina, Brasil, México e Paraguai. Geralmente as espécies desse gênero são árvores encontradas na vegetação secundária com alturas entre 5 e 25 metros. As espécies deste gênero são conhecidas no Brasil por diversos nomes populares, dentre eles, embaúba, imbaúba, umbaúba e embaúva. O uso popular destas espécies está associado a chás, empregados nos tratamentos de doenças respiratórias, hipertensão, controle da glicemia e também como diurético. Algumas atividades biológicas já foram descritas para a espécie, dentre elas: efeitos cardiovasculares, efeito hipoglicemiante, efeito sedativo,atividade antioxidante e ação anti-inflamatória. O objetivo desse estudo foi isolar e identificar os princípios ativos da espécie Cecropia pachystachyae avaliar as atividades alelopática e antioxidante dos extratos etanólicos de diversas partes da planta, visando a obtenção de um produto. Os ensaios alelopáticos foram realizados frente a Lactucasativa, para avaliaras alterações na germinação das sementes e no desenvolvimento do crescimento das plântulas. A atividade antioxidante, foi avaliada pela capacidade de sequestro do radical DPPH*, pelo efeito de proteção à peroxidação da membrana lipídica e pela capacidade de redução do ferro, sendo também determinado o teor de compostos fenólicos e quantificação de flavonóides. O estudo químico da espécie foi realizado pelo isolamento e identificação dos compostos oriundos dos extratos etanólicos, através do uso de de técnicas cromatográficas e espectroscópicas; padronização de um método de obtenção do triterpeno ácido tormêntico e avaliação sazonal desse constituinte químico presente nos extratos.Os resultados obtidos indicam que os extratos etanólicos da C. pachystachya, apresentam efeito inibidor na germinação e crescimento de L.sativae apresentam potente capacidade antioxidante. Alémdisso, os extratos possuem altos teores de compostos fenólicos e flavonóides. Na análise química dos extratos etanólicos, foi possível isolar e elucidar 4 substâncias, o ácido tormêntico, o ácido tormêntico acetilado e outras duas substâncias, denominadas de I.S.I. e FR2. O método de obtenção e isolamento do ácido tormêntico foi padronizado e observado a variação sazonal deste composto, demonstrando que o mês de maior produção do composto foi em maio de 2014, e a parte da planta que tem a maior produção desta substância é a raiz, sendo os extratos obtidos a frio. Diante de todas as atividades apresentadas e da identificação química, de classes de compostos e substâncias para esta espécie, ela pode ser considerada como uma importante fonte renovável destas substâncias.
Książki na temat "Urticaceae"
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Wilmot-Dear, C. M. The New World species of Boehmeria and Pouzolzia (Urticaceae, tribus Boehmerieae): A taxonomic revision. Copenhagen: Council for Nordic Publications in Botany, 1996.
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M, Kavalali Gulsel, red. Urtica: Therapeutic and nutritional aspects of stinging nettles. London: Taylor & Francis, 2003.
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Hansen, Bruce F., i Richard P. Wunderlin. Flora of Florida, Volume III: Dicotyledons, Vitaceae through Urticaceae. University Press of Florida, 2016.
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Kavalali, Gulsel M. Urtica: The Genus Urtica. Taylor & Francis Group, 2003.
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Kavalali, Gulsel M. Urtica: The Genus Urtica. Taylor & Francis Group, 2003.
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Kavalali, Gulsel M. Urtica: The Genus Urtica. Taylor & Francis Group, 2003.
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Kavalali, Gulsel M. Urtica: The Genus Urtica. Taylor & Francis Group, 2003.
Znajdź pełny tekst źródłaCzęści książek na temat "Urticaceae"
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Xu, Zhenghao, i Meihua Deng. "Urticaceae". W Identification and Control of Common Weeds: Volume 2, 125–61. Dordrecht: Springer Netherlands, 2017. http://dx.doi.org/10.1007/978-94-024-1157-7_21.
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Hegnauer, Robert. "Urticaceae". W Chemotaxonomie der Pflanzen, 714–20. Basel: Birkhäuser Basel, 1990. http://dx.doi.org/10.1007/978-3-0348-9256-8_110.
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Kaul, Mohan L. H. "Urticaceae". W Male Sterility in Higher Plants, 839. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-83139-3_51.
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Walker, C. C. "Urticaceae". W Illustrated Handbook of Succulent Plants: Dicotyledons, 447–50. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-642-56316-4_53.
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Walker, C. C., i U. Eggli. "Urticaceae". W Dicotyledons: Rosids, 1–4. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-85239-9_107-2.
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Walker, C. C., i U. Eggli. "Urticaceae". W Dicotyledons: Rosids, 1–4. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-85239-9_107-1.
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Friis, I. "Urticaceae". W Flowering Plants · Dicotyledons, 612–30. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-662-02899-5_76.
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Smith, Nigel. "Urticaceae". W Amazon Fruits: An Ethnobotanical Journey, 1251–62. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-12803-5_49.
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Walker, C. C., i U. Eggli. "Urticaceae". W Dicotyledons: Rosids, 1071–74. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-030-93492-7_107.
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Walker, C. C. "Laportea URTICACEAE". W Dicotyledons: Rosids, 1–2. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-85239-9_108-1.
Pełny tekst źródłaStreszczenia konferencji na temat "Urticaceae"
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Santos, Rennan Jean Batista Dos. "Estruturas secretoras internas em URTICACEAE: morfoanatomia e histoquímica em uma espécie de Pourouma". W XXXII Congresso de Iniciação Científica. Manaus, Amazonas: Even3, 2024. http://dx.doi.org/10.29327/xxxii-congresso-de-iniciacao-cientifica-380957.769427.
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Козлов, К. Е., i Шабалкина С. В. Шабалкина. "Таксономическая структура флоры памятника природы «Яранская берёзовая роща» (Кировская область)". W III молодёжная всероссийская научная конференция с международным участием «PLANTAE & FUNGI». Botanical Garden-Institute FEB RAS, 2023. http://dx.doi.org/10.17581/paf2023.73.
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Яранская берёзовая роща – биологический (ботанический) памятник природы регионального значения, расположенный на юго-западе Кировской области; является искусственно созданным насаждением паркового типа из Betula pendudla Roth и B. pubescens Ehrh. общей площадью 18 га, заложен в 1914 г. для шумозащиты. Почти за 110-летний период существования произошли изменения в составе фитоценозов, сопровождающиеся естественными преобразованиями в древостое в связи с появлением Picea abies (L.) H. Karst. и Tilia cordata Mill. преимущественно во втором ярусе [1]. Первые исследования флоры проведены сотрудниками Вятского государственного университета в 2014 г. [2]. В 2022 г. список пополнился в результате обработки собственных полных геоботанических описаний растительных сообществ. По материалам полевых исследований составлен конспект флоры памятника природы, номенклатура приведена согласно базе данных [3]. В настоящее время флора Plantae представлена 109 видами из 40 семейств. По два семейства насчитывается в отделах Bryophyta и Polypodiophyta, одно семейство с тремя родами – в отделе Pinophyta, остальные семейства относятся к цветковым. Самым крупным семейством является Asteraceae, включающее 14 родов и видов, на втором месте расположилось Rosaceae с 12 родами и 14 видами, на третьем – Poaceae с 8 родами и 10 видами. Слабее представлены Fabaceae с шестью видами из трех родов; Apiaceae с пятью родами и видами; Lamiaceae с четырьмя родами и видами; Ranunculaceae с четырьмя видами из двух родов и Plantaginaceae с четырьмя видами из двух родов. По два рода и вида включают семейства Salicaceae, Viburnaceae и Caprifoliaceae; по три вида из одного рода – Caryophyllaceae и Geraniaceae, по два вида из одного рода – Cyperaceae, Urticaceae, Betulaceae, Sapindaceae, Campanulaceae. По одному роду и виду насчитывают 15 семейств: Cornaceae, Papaveraceae, Cannabaceae, Violaceae, Aristolochiaceae, Fagaceae, Amaranthaceae, Hypericaceae, Asparagaceae, Malvaceae, Grossulariaceae, Oxalidaceae, Scrophulariaceae, Oleaceae и Rubiaceae. Приведенный список не является окончательным, исследование флоры продолжится в текущем году.