Nov 20, 2014

Abiotic drivers of protein abundance variation among natural populations

BioRxiv : the Preprint Server for Biology
Chao ShiNan Yao

Abstract

Identifying when and where environmental change induces molecular responses in natural populations is an important goal in contemporary ecology. It can aid in identifying molecular signatures of populations experiencing stressful conditions and potentially inform if species are approaching the limits of their tolerance niches. Achieving this goal is hampered by our limited understanding of the influence of environmental variation on the molecular systems of most ecologically relevant species as the pathways underlying fitness-affecting plastic responses have primarily been studied in model organisms under controlled laboratory conditions. In this study, we establish relationships between protein abundance patterns and the abiotic environment by profiling the proteomes of 24 natural populations of the caddisfly Crunoecia irrorata. We subsequently relate these profiles to natural variations in the abiotic characteristics of their freshwater spring habitats which shows that protein abundances and networks respond to abiotic variation according to the functional roles these proteins have. We provide evidence that geographic and past and present environmental differences between sites affect protein abundances and identifications, a...Continue Reading

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Mentioned in this Paper

Study
Biochemical Pathway
Sulfanilamide
Cellular Sphingolipid Homeostasis
7-fluorobenzanthracene
Regulation of Biological Process
S-methyl benzo(1,2,3)thiadiazole-7-carbothioate
Sphingolipids
Plant Development
Arabidopsis thaliana extract

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