Results 71 to 80 of about 1,304,420 (292)

Humidity and temperature interact in breaking physical dormancy in Fabaceae seeds from the Brazilian semiarid region

American Journal of Botany, EarlyView.
Abstract Premise In semiarid ecosystems such as the Brazilian Caatinga, physical seed dormancy (PY) is critical for plant persistence when water is unpredictable, but how soil moisture and temperature regulate PY release and seed longevity in species of native Fabaceae that have different growth forms is unknown. Methods Seeds of the herbaceous species
Humberto Araújo Almeida, Jessyca Adelle Silva Santos, Queila Souza Garcia   +2 more
wiley   +1 more source

Microbial assembly among plant parts of a tropical tree in different habitats and seasons

Microbiology Spectrum
Microorganisms are exhibited in every environment, but their role in the ecosystem and host association remains to be understood. Microbiome research highlights environmental filtering as a factor shaping microbial communities in terrestrial ecosystems ...
Muhammad Qaisar Naeem Khan, Wen-Qian Xiang, Ya-li Wei, Ming-Xun Ren   +3 more
doaj   +1 more source

Hydraulic function of medullary bundles in a tropical root climber

American Journal of Botany, EarlyView.
Abstract Premise Medullary bundles, which are vascular bundles in the pith, have evolved multiple times. However, their functional significance remains poorly understood. Here, we investigated how medullary bundles are involved in the vascular architecture and hydraulic function in a tropical root climber, Adelobotrys scandens (Melastomataceae) to ...
Sandrine Isnard, Damien Longepierre, Taylor Feild   +2 more
wiley   +1 more source

Seasonal Fluctuations of Plastochromanol‐8 and α‐Tocopherol Amounts in the Leaves of Cecropia Trees

Journal of the American Oil Chemists' Society, EarlyView.
ABSTRACT Plastochromanol‐8 (PC‐8) is a homologue of γ‐tocotrienol with a longer side chain (eight instead of three isoprene units) and therefore also a representative of the tocochromanol (vitamin E) group. PC‐8 has been determined in various plants and seeds, with Cecropia sp. leaves showing unusually high levels.
Rosalie Ormos, Jörg Rau, Walter Vetter
wiley   +1 more source

Revisiting Securidaca longipedunculata Seed Oil: Applying NMR and Mass Spectroscopy to Confirm the Presence of 2‐Acetyl‐1,3‐Diacyl–sn‐Glycerols and Conjugated Hydroxydienoic Fatty Acids

Journal of the American Oil Chemists' Society, EarlyView.
The manuscript confirms and expands on previous reports concerning the presence of unusual conjugated hydroxydienoic fatty acids and acetyl‐TAG in the seed oil of Securidaca longipedunculata. The location of acetate only at sn‐2 of TAG was conclusively shown by high resolution NMR and hydroxy seed fatty acids are characterized.
Mark A. Smith, Jianfeng Zhu, Jin‐Yue Sun   +2 more
wiley   +1 more source

Turning a new leaf: PhenoVision provides leaf phenology data at the global scale

Applications in Plant Sciences, EarlyView.
Abstract Premise Plant phenology dictates many aspects of community function and ecosystem dynamics. Yet, global phenology data are still limited, especially in areas lacking monitoring programs. Here we present a new data resource, PhenoVision–Leaf, which extends a computer vision pipeline utilizing iNaturalist digital image vouchers to produce global‐
Erin L. Grady, Ellen G. Denny, Carrie E. Seltzer, John Deck, Daijiang Li, Russell Dinnage, Robert P. Guralnick   +6 more
wiley   +1 more source

Tropical Rain Trees

Journal of the New York Botanical Garden, 1946
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +2 more sources

Dr. Brian Angus on Tropical Medicine

, 2010
Writer and medical historian Conrad Keating talks to Dr. Brian Angus, Director of the Wellcome Trust UK Centre for Clinical Tropical Medicine in Oxford, about his interest in science and how this inspired him to work with infectious diseases in Africa ...
Brain Angus, Conrad Keating
core  

The effect of drought on wood-boring in trees and saplings in a tropical forest

, 2021
Droughts are predicted to increase in severity in many regions due to climate change and there is strong evidence that such events can lead to increased insect attack and consequent widespread tree mortality in temperate forests.
Gely, Claire, Stork, Nigel E., Laurance, SGW, Laurance, Susan G. W., Gely, C, Stork, NE   +5 more
core   +1 more source

refloraR: An R package for efficiently retrieving and analyzing plant specimen data from the Herbário Virtual Reflora

Applications in Plant Sciences, EarlyView.
Abstract Premise Advances in the digitization of herbarium collections are enabling open access to specimen data for research and conservation. In Brazil, the Herbário Virtual Reflora (HVR) hosts over 4.8 million high‐resolution images of botanical specimens and their associated data from 86 national and international herbaria.
Carlos Calderón del Cid, Ana Flávia Alves Versiane, Paula Leitman, Fabiana Ranzato Filardi, Rafaela Campostrini Forzza, Domingos Cardoso   +5 more
wiley   +1 more source