Results 131 to 140 of about 408,792 (381)

Patterns of within‐ and among‐plant variation in nectar production in the beetle‐pollinated Amianthium muscaetoxicum

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Plant interactions with different pollinator species have shaped the evolution of remarkable diverse nectar production, presentation, and composition traits across the angiosperms. These traits can allow plants to manipulate and reward the behaviors of specific pollinators to enhance pollen donation and receipt with some precision. One
Sarah J. McPeek   +2 more
wiley   +1 more source

Plastomic studies inform the mechanisms of edaphic adaptation in North American species in the tribe Thelypodieae (Brassicaceae)

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Adaptation to edaphic environments is vital for plant survival. The tribe Thelypodieae (Brassicaceae) thrives in diverse edaphic conditions, including harsh serpentine soils. A robust phylogeny is essential to understanding the edaphic evolution in this tribe but is challenging to obtain due to incomplete lineage sorting, hybridization,
Kasuni C. Daundasekara   +2 more
wiley   +1 more source

tRNA functional signatures classify plastids as late-branching cyanobacteria. [PDF]

open access: yes, 2019
BackgroundEukaryotes acquired the trait of oxygenic photosynthesis through endosymbiosis of the cyanobacterial progenitor of plastid organelles. Despite recent advances in the phylogenomics of Cyanobacteria, the phylogenetic root of plastids remains ...
Amrine, Katherine Ch   +3 more
core   +1 more source

Biosilicification in monocots: Comparative analysis highlights contrasting patterns of deposition

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise New insights into biomineral uptake and sequestration are important for understanding how plants grow. Some plants accumulate silica accretions in precise locations in particular cells. Among monocots, controlled biosilicification occurs in several different forms and is restricted to commelinids and orchids. Methods We utilized energy‐
Paula J. Rudall   +2 more
wiley   +1 more source

The Molecular Phylogenetic Signature of Clades in Decline

open access: yesPLoS ONE, 2011
Molecular phylogenies have been used to study the diversification of many clades. However, current methods for inferring diversification dynamics from molecular phylogenies ignore the possibility that clades may be decreasing in diversity, despite the fact that the fossil record shows this to be the case for many groups.
Quental, Tiago B, Marshall, Charles R
openaire   +8 more sources

Emergence of a New Highly Successful Acapsular Group A Streptococcus Clade of Genotype emm89 in the United Kingdom

open access: yesmBio, 2015
Group A Streptococcus (GAS) genotype emm89 is increasingly recognized as a leading cause of disease worldwide, yet factors that underlie the success of this emm type are unknown.
C. Turner   +8 more
semanticscholar   +1 more source

Comparative pathogenicity of vaccinia virus and mpox virus infections in CAST/EiJ mice: Exploring splenomegaly and transcriptomic profiles

open access: yesAnimal Models and Experimental Medicine, EarlyView.
We successfully constructed CAST/EiJ mice models infected with low‐dose vaccinia virus (VACV‐L), high‐dose VACV (VACV‐H), and mpox virus (MPXV), demonstrating that VACV‐L and MPXV infections induced splenomegaly in mice, and VACV‐H infection caused mortality in mice.
Yongzhi Hou   +9 more
wiley   +1 more source

A new spin on chemotaxonomy: Using non‐proteogenic amino acids as a test case

open access: yesApplications in Plant Sciences, EarlyView.
Abstract Premise Specialized metabolites serve various roles for plants and humans. Unlike core metabolites, specialized metabolites are restricted to certain plant lineages; thus, in addition to their ecological functions, specialized metabolites can serve as diagnostic markers of plant lineages.
Makenzie Gibson   +4 more
wiley   +1 more source

The HIV clade. [PDF]

open access: yesAmerican Journal of Public Health, 1988
D A Grimes, R H Settlage
openaire   +3 more sources

Production of hemolysin BL by Bacillus cereus group isolates of dairy origin is associated with whole-genome phylogenetic clade

open access: yesBMC Genomics, 2016
BackgroundBacillus cereus group isolates that produce diarrheal or emetic toxins are frequently isolated from raw milk and, in spore form, can survive pasteurization. Several species within the B.
J. Kovac   +6 more
semanticscholar   +1 more source

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