Results 61 to 70 of about 217,153 (254)

Negative density-dependent dispersal in tsetse (Glossina spp): An artefact of inappropriate analysis

PLOS Neglected Tropical Diseases, 2021
Published analysis of genetic material from field-collected tsetse ( Glossina spp, primarily from the Palpalis group) has been used to predict that the distance ( δ ) dispersed per generation increases as effective population densities (
John W. Hargrove, John Van Sickle, Glyn A. Vale, Eric R. Lucas   +3 more
openaire   +4 more sources

Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation

FEBS Letters, EarlyView.
Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz, Mihály Mérey, Rebeka Vásárhelyi, Ramóna Pék, Victor Imburchia, László Henn, Adrián Kószó, Nicholas D. Lakin, Ivan Ahel, Sébastien Huet, Ágnes Czibula, Gyula Timinszky   +11 more
wiley   +1 more source

Negative density dependence mediates biodiversity–productivity relationships across scales

Nature Ecology & Evolution, 2017
Regional species diversity generally increases with primary productivity whereas local diversity-productivity relationships are highly variable. This scale-dependence of the biodiversity-productivity relationship highlights the importance of understanding the mechanisms that govern variation in species composition among local communities, which is ...
Joseph A. LaManna, R. Travis Belote, Laura A. Burkle, Christopher P. Catano, Jonathan A. Myers   +4 more
openaire   +4 more sources

Density Dependence and Adult Survival Drive Dynamics in Two High Elevation Amphibian Populations

Diversity, 2020
Amphibian conservation has progressed from the identification of declines to mitigation, but efforts are hampered by the lack of nuanced information about the effects of environmental characteristics and stressors on mechanistic processes of population ...
Amanda M. Kissel, Simone Tenan, Erin Muths   +2 more
doaj   +1 more source

An isoform of 14‐3‐3 protein regulates transbilayer lipid movement at the plasma membrane

FEBS Letters, EarlyView.
Loss of 14‐3‐3ζ in CHO cells confers resistance to exogenous phosphatidylserine (PS) and impairs endocytosis‐independent inward flip‐flop of fluorescent PS at the plasma membrane. RNAi‐mediated knockdown reproduces this defect, while no additive effect is seen in ATP11C‐deficient cells.
Akiko Yamaji‐Hasegawa, Akira Hattori, Masafumi Tsujimoto, Toshihide Kobayashi   +3 more
wiley   +1 more source

Negative frequency-dependent selection is intensified at higher population densities in protist populations [PDF]

Biology Letters, 2015
Natural populations of free-living protists often exhibit high-levels of intraspecific diversity, yet this is puzzling as classic evolutionary theory predicts dominance by genotypes with high fitness, particularly in large populations where selection is efficient.
Minter, EJA, Watts, PC, Lowe, CD, Brockhurst, MA   +3 more
openaire   +3 more sources

Large trees are surrounded by more heterospecific neighboring trees in Korean pine broad-leaved natural forests

Scientific Reports, 2018
Negative conspecific density dependence is one of the principal mechanisms affecting plant performance and community spatial patterns. Although many studies identified the prevalence of density dependent effects in various vegetation types by analyzing ...
Hongxiang Wang, Hui Peng, Gangying Hui, Yanbo Hu, Zhonghua Zhao   +4 more
doaj   +1 more source

Frequency and density-dependent selection on life-history strategies--a field experiment. [PDF]

PLoS ONE, 2008
Negative frequency-dependence, which favors rare genotypes, promotes the maintenance of genetic variability and is of interest as a potential explanation for genetic differentiation.
Tapio Mappes, Minna Koivula, Esa Koskela, Tuula A Oksanen, Tiina Savolainen, Barry Sinervo   +5 more
doaj   +1 more source

Organizing the interface—Plasma membrane architecture and receptor dynamics in virus‐cell interactions

FEBS Letters, EarlyView.
Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley   +1 more source

pH‐mediated activation of the lysosomal arginine sensor SLC38A9

FEBS Letters, EarlyView.
Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
wiley   +1 more source