Thermal acclimation uncovers a simple genetic basis of adaptation to high temperature in a cosmopolitan pest.

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State Key Laboratory of Ecological Pest Control for Fujian-Taiwan Crops, Institute of Applied Ecology, Fujian Agriculture and Forestry University, Institute of Plant Protection, Fujian Academy of Agricultural Sciences, Fuzhou 350002, China.

Published: March 2024

Understanding a population's fitness heterogeneity and genetic basis of thermal adaptation is essential for predicting the responses to global warming. We examined the thermotolerance and genetic adaptation of to exposure to hot temperatures. The population fitness parameters of the hot-acclimated DBM strains varied in the thermal environments. Using genome scanning and transcription profiling, we find a number of genes potentially involved in thermal adaptation of DBM. Editing two ABCG transporter genes, and , confirmed their role in altering cuticle permeability and influencing thermal responses. Our results demonstrate that SNP mutations in genes and changes in gene expression can allow DBM to rapidly adapt to thermal environment. ABCG transporter genes play an important role in thermal adaptation of DBM. This work improves our understanding of genetic adaptation mechanisms of insects to thermal stress and our capacity to predict the effects of rising global temperatures on ectotherms.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10904271PMC
http://dx.doi.org/10.1016/j.isci.2024.109242DOI Listing

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