Results 41 to 50 of about 622,064 (301)

Extractable nitrogen and microbial community structure respond to grassland restoration regardless of historical context and soil composition. [PDF]

open access: yes, 2015
Grasslands have a long history of invasion by exotic annuals, which may alter microbial communities and nutrient cycling through changes in litter quality and biomass turnover rates.
Allen, Edith B   +3 more
core   +1 more source

Evolutionarily divergent DUF4465 domains have a common vitamin B12‐binding function

open access: yesFEBS Open Bio, EarlyView.
We show that DUF4465 family proteins, widespread across bacteria from gut microbiomes, hydrothermal vents, and soil, share a common vitamin B12‐binding function. These augmented β‐jellyroll proteins bind vitamin B12 via extended loops. Our findings establish sequence‐diverse DUF4465 proteins as a widespread class of B12‐binding proteins, highlighting ...
Charlea Clarke   +4 more
wiley   +1 more source

Dimerisation of the Drosophila odorant co-receptor Orco

open access: yesFrontiers in Cellular Neuroscience, 2014
Odorant receptors (ORs) detect volatile molecules and transform this external information into an intracellular signal. Insect ORs are heteromers composed of two seven transmembrane proteins, an odor-specific OrX and a coreceptor (Orco) protein.
Latha eMukunda   +3 more
doaj   +1 more source

New Synthesis—Systems Chemical Ecology [PDF]

open access: yesJournal of Chemical Ecology, 2011
Secondary metabolites are enigmatic in terms of costs and benefits for their producers and how their ontogenetic accumulation or timely induction affects the evolution of single species and co-evolution of interacting species. More than 50 years ago, Gottfried Fraenkel dispelled the notion of secondary metabolites as waste products: “Thus, the animal ...
Hadacek, Franz, Chobot, Vladimir
openaire   +2 more sources

Advisory report on nutrient levels and related ecology of Malham Tarn [PDF]

open access: yes, 1982
Aspects of reported nutrient levels and their ecological implications for Malham Tarn are discussed. Discussion centres upon the data given here as appendices, involving possible evidence of a long-term increase in the concentrations of some nutrients ...
Hilton, J., Talling, J.F.
core  

Potential phytotoxic and shading effects of invasive Fallopia (Polygonaceae) taxa on the germination of dominant native species [PDF]

open access: yes, 2011
Two species of the genus Fallopia (F. sachalinensis, F. japonica, Polygonaceae) native to Asia, and their hybrid (F. ×bohemica), belong to the most noxious plant invaders in Europe.
Jarošík, Vojtěch   +3 more
core   +2 more sources

Air Pollution and the Risk and Progression of Multiple Sclerosis: A Systematic Review and Meta‐Analysis

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Purpose Air pollution has been linked to several neurological conditions, including stroke and neurodegenerative diseases. Evidence regarding its association with multiple sclerosis (MS) remains conflicting, limited by small sample sizes. Methods PubMed, Embase, Scopus, and Cochrane controlled register of trials (CENTRAL) were searched on ...
Ahmad A. Toubasi, Thuraya N. Al‐Sayegh
wiley   +1 more source

Modulation of legume defense signaling pathways by native and non-native pea aphid clones

open access: yesFrontiers in Plant Science, 2016
The pea aphid (Acyrthosiphon pisum) is a complex of at least 15 genetically different host races that are native to specific legume plants, but can all develop on the universal host plant Vicia faba.
Carlos Sanchez-Arcos   +3 more
doaj   +1 more source

Computational reverse chemical ecology: Virtual screening and predicting behaviorally active semiochemicals for Bactrocera dorsalis [PDF]

open access: yes, 2014
BACKGROUND: Semiochemical is a generic term used for a chemical substance that influences the behaviour of an organism. It is a common term used in the field of chemical ecology to encompass pheromones, allomones, kairomones, attractants and repellents ...
Abraham Verghese   +5 more
core   +2 more sources

Innovative Processing of Compacted Waste Aluminum Alloy Powders via Controlled Remelting and Solidification

open access: yesAdvanced Engineering Materials, EarlyView.
This study demonstrates an efficient recycling route for out‐of‐spec AlSi10Mg atomized powders through compaction and arc remelting followed by suction casting. By correlating compaction load, cooling rate, and resulting microstructure, we show that intermediate pressures (50–80 kN) and rapid cooling refine dendrites, reduce porosity, and enhance ...
Mila Christy de Oliveira   +4 more
wiley   +1 more source

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