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Showing 1 to 17 of 17 for “"apocynaceae"”.
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Phylogenetic Study of Apocynaceae Juss. And Aspidosperma Mart. And Zucc
The systematic analysis of species boundaries and relationships within the genus Aspidosperma was accomplished with a combination of phenetic and cladistic methods. The phenetic part of the study used principal components analysis (PCA) of morphological variation to establish basic units which were …
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Comparative Anatomy of the Stem in the Carrion Flowers (Apocynaceae-Asclepiadoideae)
… or stapeliads (Stapelia and related genera, Apocynaceae) comprise a group of several hundred species of succulent plants native to the Old World, primarily Africa. Despite the size and diversity of the group, surprisingly little is known of the comparative anatomy and morphology of its …
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The pollination and scent ecology of selected Cape milkweeds (Apocynaceae: Asclepiadoideae)
Milkweeds (Asclepiadoideae, Apocynaceae) possess a complex floral morphology that has made them prime candidates for investigating the evolution of plant-pollinator relationships. In South Africa, the pollination ecology of this diverse group has largely been focused in the summer rainfall region. …
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Biologia reprodutiva de Peltastes peltatus (Vell.) Woodson (Apocynaceae): morfologia floral, mecanismo de polinização e polinizadores
… morfológicas ainda não mencionadas para as Apocynaceae s.s., como por exemplo, união entre filetes e retináculo não-tricomáceo. A captura de pólen da probóscide do inseto visitante foi transferida para tecidos não-carpelares. As fendas anterais desempenham a função de guiar o aparelho bucal …
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Preliminary characterization of VmTPT2, a putative monoterpene indole alkaloid (MIA) transporter from Vinca minor L. (Apocynaceae)
… on the leaf surface of medicinally important Apocynaceae plants, which led to the recent discovery and characterization of an ABC transporter (CrTPT2) that was shown to mobilize catharanthine from its site of biosynthesis in epidermal cells to the leaf surface of Catharanthus roseus. …
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I. Isolation and Characterization of Bioactive Compounds From Suriname and Madagascar flora. II. A Synthetic Approach to Lucilactaene
… methods. Craspidospermum verticillatum (Apocynaceae) yielded four known indole alkoids. Casimirella sp (Icacinaceae) gave three new and five known diterpenoids. Pentopetia androsaemifolia (Apocynaceae) afforded one new and three known cardenolide glycosides. Physalis angulata (Solanaceae) …
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Fenologia e biologia reprodutiva de duas espécies Simpátricas de Apocynaceae (Allamanda blanchetii A. DC. e Mandevilla tenuifolia J. C. Mikan Woodson) ocorrentes em Caatinga no Cariri Paraibano
… ação tardia em Allamanda blanchetii A. DC., uma Apocynaceae endêmica da Caatinga). A fenologia reprodutiva, o mecanismo de polinização e o sistema reprodutivo de Allamanda blanchetii foram analisados em populações naturais na RPPN Fazenda Almas (7°28'45"S e 36°54'18"W), Paraíba, Brasil. Allamanda …
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Dearomative reduction of arenes through the use of arenophiles & studies towards the synthesis of cardiotonic steroids calotropin and calactin
… Calotropin, a cardiotonic steroid, isolated from Apocynaceae plants is a highly cytotoxic natural product with anti-cancer activity. A total synthesis strategy which utilizes a NHC-catalyzed benzoin condensation, and Pd-catalyzed nucleophilic dearomatization of a phenol is described. Also …
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Mechanismus působení protinádorového léčiva ellipticinu v cílových tkáních jeho účinku
Ellipticin je alkaloid čeledě Apocynaceae, který vykazuje významný protinádorový a anti-HIV účinek. Na metabolismu ellipticinu se podílí cytochromy P450 (CYP) a peroxidasy za vzniku aktivačních a detoxifikačních metabolitů. Již v dřívějších pracích byly identifikovány jednotlivé isoformy CYP, které …
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Pollination Biology of Gentianales in a Southern Ecuadorian Montane Forest
… species of the monophyletic order Gentianales (Apocynaceae including Asclepiadoideae, Gentianaceae, and Rubiaceae) was investigated in a tropical montane forest in southern Ecuador. This study is part of an interdisciplinary project on the diversity and functioning of a montane ecosystem, and …
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Searching for Anticancer Agents and Antimalarial Agents from Madagascar
… from Leptadenia madagascariensis Decne. (Apocynaceae); two new and four known alkaloids from Ambavia gerrardii (Baill.) Le Thomas (Annonaceae); five new sesquiterpene lactones from Polycline proteiformis Humbert (Asteraceae). The structures of all compounds were determined by analysis of …
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Fibre Production Among the Coastal Hunter-gatherers of South America’s West Coast: New Narratives from Plant Fibre Technologies
… from stems of an unidentified species from Apocynaceae (Asclepias sp.) plant family were used in a few artefacts.. Remains of the ‘epidermis’ of bast fibres in the artefacts indicate decortication as a method of extracting bast fibres from the plants, while the presence of cut marks reveals …
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The γ-tocopherol-like family of N-methyltransferases: A taxonomically clustered gene family encoding enzymes responsible for N-methylation of monoterpene indole alkaloids
The plant family Apocynaceae accumulates thousands of monoterpene indole alkaloids (MIAs) which originate, biosynthetically, from the common secoiridoid intermediate, strictosidine, that is formed from the condensation of tryptophan and secologanin molecules. MIAs demonstrate remarkable structural …
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Localization of monoterpenoid indole alkaloid (MIA) biosynthesis by in situ hybridization (ISH)
… metabolites that are characteristic of the Apocynaceae plant family including the most notable Catharanthus roseus. These compounds have demonstrated activity as successful drugs for treating various cancers, neurological disorders and cardiovascular conditions. Due to the low yields of …
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Saberes tradicionais: etnobotânica no contexto da área de Proteção Ambiental (APA) e área de relevante interesse ecológico (ARIE) da Barra do Rio Mamanguape-PB
… citadas predominaram a Fabaceae, Anacardiaceae, Apocynaceae, Bignoniaceae e a Myrtaceae, enquanto as espécies que se destacaram foram: Eschweilera ovata (Cambess.) Miers, Anacardium occidentale L., Rhizophora mangle L., Byrsonima gardneriana Juss, Pogonophora schomburgkiana Miers. Os informantes …
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Avaliação da toxicidade e efeitos biológicos do látex extraído de Himatanthus drasticus (Mart.) PLUMEL
Himatanthus drasticus (Mart.) Plumel é uma espécie arbórea que pode chegar a sete metros de altura. Mais conhecida como janaguba é encontrada em áreas de cerrado, caatinga, campos rupestres e floresta tropical. Os usuários afirmam que a planta serve para o tratamento de tumores, hemorroidas, …
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Wachstumsraten, Wachstumsmuster und Wachstumsstörungen tropischer Bäume: Analyse von Langzeiteffekten und kurzfristigen Störungen mit Hilfe von Jahrringstudien
… the endangered species Aspidosperma polyneuron (Apocynaceae) at forest edge and interior in the highly fragmented Brazilian Atlantic Forest. We obtained increment cores of each tree along with data about tree and surrounding canopy heights, plus their current levels of liana infestation. We used …