Results 151 to 160 of about 19,378,301 (312)

Foth-Joyce-Turtle-taxa-S1 from Slow and steady: the evolution of cranial disparity in fossil and recent turtles

, 2016
Table with taxa and additional information on systematics, age and ...
Christian Foth (443189), Walter G. Joyce (537727)   +1 more
core   +1 more source

Exposure to heat waves and drought improves subsequent leaf heat tolerance for five oak species in southern California

American Journal of Botany, EarlyView.
Abstract Premise Given the threats of climate change, we investigated the impact of high temperatures separately and in combination with reduced soil water on leaf heat tolerance for five oaks (Fagaceae) with overlapping ranges in southern California, USA: Quercus agrifolia and Q. chrysolepis (evergreen species), Q. douglasii and Q.
Casey D. Wisely, G. Olivia Plumb, Mira N. Ranganath, Emily Dolida, Ishan Ashford, Graham Luethe, Tim Thibault, Gretchen B. North   +7 more
wiley   +1 more source

Placing very long branch taxa in the plant tree of life: A case study with Dioscoreales mycoheterotrophs

American Journal of Botany, EarlyView.
Abstract Premise The inclusion of heterotrophic plants in broader systematic studies is challenging due to substantial morphological modification, gene loss, and accelerated substitution rates following photosynthesis loss. In particular, inclusion of very long branch (VLB) taxa with highly elevated rates may lead to phylogenomic misinference.
Marybel Soto Gomez, Qianshi Lin, Nathaniel J. Klimpert, Vivienne K. Y. Lam, Juan Viruel, Vincent S. F. T. Merckx, Paula J. Rudall, Sean W. Graham   +7 more
wiley   +1 more source

Palatability of geophyte underground storage organs partially explains their depth in the Cape Floristic Region, geophyte capital of the world

American Journal of Botany, EarlyView.
Abstract Premise The soil depth of underground storage organs (USOs) of geophytes involves cost–benefit trade‐offs and may relate to USO age, size, and disturbances such as fire and herbivory. Yet determinants of USO depth are poorly studied. We posit that belowground mammalian predation of USOs is a selective force for the positive relationship ...
Tineke Kraaij, Elzanne Singels, Félix Forest, Karen J. Esler, Richard M. Cowling   +4 more
wiley   +1 more source

Structure and Biosynthesis of Mangotoxin Produced by the Plant Pathogen Pseudomonas syringae

Angewandte Chemie, EarlyView.
The structure of mangotoxin remained elusive for over two decades. Here, mangotoxin was isolated from the native producer, Pseudomonas syringae pv. syringae, and was determined to be an alkyne‐containing dipeptide. Mangotoxin inhibited the growth of multidrug‐resistant human pathogen Klebsiella pneumoniae.
Alexis H. Murray, Sohan Hazra, Ryan W. Mull, Erinn M. O'Neill, Bo Li   +4 more
wiley   +2 more sources

Species with U‐shaped geographic ranges as an opportunity to study early stages of divergence: The case of Ipomoea microsepala

American Journal of Botany, EarlyView.
Abstract Premise The study of the early stages of divergence between populations is crucial to understanding how species and biodiversity originate. Geographic distributions that capture some aspects of the process of divergence, such as those that are markedly U‐shaped, could offer a window to identify systems undergoing incipient speciation, which ...
Itzel A. Piña‐de la Rosa, N. Ivalú Cacho   +1 more
wiley   +1 more source

Magnetic Resonance Reveals Radical Stability in Native Biofilms and Its Role in Bacterial Resistance

Angewandte Chemie, EarlyView.
The complex biofilm environment consists of planktonic bacterial cells and cells embedded in an extracellular matrix (ECM). Through an integrated magnetic resonance approach, we show that nitroxide radicals primarily interact with the polysaccharides and lipids in the ECM.
Alysia Mandato, Hannah Hunter, Sadhana Srinivasa, Chang‐Hyeock Byeon, Abdulkadir Tunc, Meghan K. Wells, Faith J. Scott, Frederic Mentink‐Vigier, Wook Kim, Sunil Saxena, Ümit Akbey   +10 more
wiley   +2 more sources

Evolutionary history and taxonomy of the genus Zea

American Journal of Botany, EarlyView.
Abstract Premise Taxonomic differentiation of teosinte species (Zea spp.), the closest relatives of maize (Z. mays) is crucial for understanding their distribution, ecology, and evolutionary history. Resolving the taxonomic uncertainties is of scientific interest and has practical implications for biodiversity management, preservation, and utilization.
José de Jesús Sánchez González, Lino De La Cruz Larios, José A. Ruiz‐Corral, Benjamín Hernández, Diana M. Rivera‐Rodríguez   +4 more
wiley   +1 more source

Davallia (Pteridophyta) in New Zealand, including description of a new subspecies of D. tasmanii

, 1999
An open access copy of this article is available from the publishers website.The fern genus Davallia is represented by two taxa in New Zealand; both are restricted in their distribution. D.
De, Lange, P.J., Von, Konrat, M.J., Braggins, J.E.   +2 more
core  

Heterosis in crosses between remnant populations of the rare prairie forb Silene regia: Implications for restoration genetics

American Journal of Botany, EarlyView.
Abstract Premise Calls to adopt seed‐sourcing strategies in biological restoration that preserve local adaptation while maximizing genetic variation (e.g., regional admixture provenancing) are increasingly common. Heterosis, the increased fitness of progeny from crosses between populations relative to progeny from crosses within populations, could ...
Isabelle A. Turner, Juan Diego Rojas‐Gutierrez, Bob Easter, Christopher G. Oakley   +3 more
wiley   +1 more source