Xanthones from Vismia latifolia [PDF]
Journal of the Brazilian Chemical Society, 2000 A new xanthone,1,4,8-trihydroxyxanthone (1,4,8-trihydroxy-9H-xanthen-9-one), was isolated from the roots of Vismia latifolia (Guttiferae). Four other known xanthones were isolated: 1,5-dihydroxy-8-methoxyxanthone, 1,7-dihydroxyxanthone, 1,6-dihydroxy-7 ...
Santos Marcelo H. dos +3 more
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Cytotoxic activity of different polarity fractions obtained from methanolic extracts of Vismia baccifera and Vismia macrophylla (Hypericaceae) collected in Venezuela [PDF]
Journal of Pharmacy & Pharmacognosy Research, 2017 Context: Cancer is a complex disease involving numerous changes in cell physiology and abnormal cell growth, which lead to malignant tumors. Many investigations are still carrying on in different areas including, natural products, to find a possible ...
Janne del C. Rojas +4 more
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Essential Oil Composition of Leaves (Guttiferae) [PDF]
Natural Product Communications, 2011 The essential oil from Vismia macrophylla Kunth (Guttiferae) leaves, extracted by hydrodistillation, was analyzed by GC/MS. The oil obtained (yield 0.11%) contained twenty-eight compounds, which were identified from their retention indices and by ...
Janne Rojas +3 more
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Revista Peruana de Biología, 2013 En el presente trabajo analicé la variabilidad intraespecifi ca del tamaño de las semillas de Vismia glaziovii Ruhl y su posible efecto sobre la velocidad de germinación y el tamaño de las plántulas.
Luis L. Arteaga
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ARQUITECTURA DE RAÍCES Y VÁSTAGOS DE VISMIA BACCIFERA Y DE RAÍCES DE VISMIA MACROPHYLLA (CLUSIACEAE)
Caldasia, 2004 Se estudió la arquitectura de raíces y vástagos de Vismia baccifera y raíces de V.macrophylla (Clusiaceae). Los sistemas de raíces de ambas especies presentancaracterísticas similares en los ejes. V.
ARIAS TATIANA
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Biologia floral e heterostilia em Vismia guianensis (Aubl.) Choisy (Clusiaceae) Floral biology and heterostyly in Vismia guianensis (Aubl.) Choisy (Clusiaceae) [PDF]
Acta Botânica Brasílica, 1998 Os estudos da biologia floral e reprodutiva e a caracterização da heterostilia em Vismia guianensis realizaram-se na Reserva Ecológica de Dois Irmãos, Recife, PE, entre novembro/1997 e fevereiro/ 1998. V.
Mary Janice Lima dos Santos +1 more
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Comparative transcriptomic analysis reveals differences in MADS-box genes of different hypericum in Changbai Mountains. [PDF]
Ecol Evol, 2023 Abstract To explore the differences between the hypericum in the Changbai Mountains, we carried out a transcriptome analysis of two common hypericums in the area, which was Hypericum attenuatum Choisy and Hypericum longistylum Oliv. We screened the MADS‐box genes to analyze divergence time and evolutionary selection expression, and determine their ...
Yunrui X +5 more
europepmc +2 more sources
Flavonoids: A Review of Antibacterial Activity Against Gram-Negative Bacteria. [PDF]
Int J MicrobiolThe rise in bacterial resistance to conventional antibiotics has led to the search for alternative antimicrobial agents, such as flavonoids, which are widely distributed in plants and known for their antibacterial properties. This review examines the antibacterial activity of flavonoids against Gram‐negative bacteria and identifies gaps in current ...
do Nascimento JB, da Costa JGM.
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High intraspecific growth variability despite strong evolutionary legacy in an Amazonian forest
Ecology Letters, Volume 26, Issue 12, Page 2135-2146, December 2023., 2023 Based on 36 years of diameter surveys for 7961 trees of 138 species, we found the greatest variation in growth between individuals within the same species in an Amazonian forest, although taxonomy explained a third of the variation. Species growth was conserved up to the genus and predicted by root, wood and leaf traits.
Sylvain Schmitt +2 more
wiley +1 more source
Past human‐induced ecological legacies as a driver of modern Amazonian resilience
People and Nature, Volume 5, Issue 5, Page 1415-1429, October 2023., 2023 Abstract People have modified landscapes throughout the Holocene (the last c. 11,700 years) by modifying soils, burning forests, cultivating and domesticating plants, and directly and indirectly enriched and depleted plant abundances. These activities also took place in Amazonia, which is the largest contiguous piece of rainforest in the world, and for
Crystal N. H. McMichael +3 more
wiley +1 more source