气候变化领域集成服务门户(CCPortal): Adaptation of plasticity to projected maximum temperatures and across climatically defined bioregions

CCPortal

DOI	10.1073/pnas.1921124117
	Adaptation of plasticity to projected maximum temperatures and across climatically defined bioregions
	Sandoval-Castillo J.; Gates K.; Brauer C.J.; Smith S.; Bernatchez L.; Beheregaray L.B.
发表日期	2020
ISSN	0027-8424
起始页码	17112
结束页码	17121
卷号	117 期号:29
英文摘要	Resilience to environmental stressors due to climate warming is influenced by local adaptations, including plastic responses. The recent literature has focused on genomic signatures of climatic adaptation, but little is known about how plastic capacity may be influenced by biogeographic and evolutionary processes. We investigate phenotypic plasticity as a target of climatic selection, hypothesizing that lineages that evolved in warmer climates will exhibit greater plastic adaptive resilience to upper thermal stress. This was experimentally tested by comparing transcriptomic responses within and among temperate, subtropical, and desert ecotypes of Australian rainbowfish subjected to contemporary and projected summer temperatures. Critical thermal maxima were estimated, and ecological niches delineated using bioclimatic modeling. A comparative phylogenetic expression variance and evolution model was used to assess plastic and evolved changes in gene expression. Although 82% of all expressed genes were found in the three ecotypes, they shared expression patterns in only 5 out of 236 genes that responded to the climate change experiment. A total of 532 genes showed signals of adaptive (i.e., genetic-based) plasticity due to ecotype-specific directional selection, and 23 of those responded to projected summer temperatures. Network analyses demonstrated centrality of these genes in thermal response pathways. The greatest adaptive resilience to upper thermal stress was shown by the subtropical ecotype, followed by the desert and temperate ecotypes. Our findings indicate that vulnerability to climate change will be highly influenced by biogeographic factors, emphasizing the value of integrative assessments of climatic adaptive traits for accurate estimation of population and ecosystem responses. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Climate change; Climatic variability hypothesis; Ecological genomics; Teleosts; Thermal biology
语种	英语
scopus关键词	article; biogeographic region; climate change; critical thermal maximum; desert; directional selection; ecological niche; ecotype; metagenomics; nonhuman; phenotypic plasticity; summer; teleost; temperature stress; adaptation; animal; Australia; desert climate; ecosystem; fish; genetics; genomics; heat; physiology; transcriptome; Adaptation, Physiological; Animals; Australia; Climate Change; Desert Climate; Ecosystem; Ecotype; Fishes; Genomics; Hot Temperature; Transcriptome
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160880
作者单位	Sandoval-Castillo, J., Molecular Ecology Lab, Flinders University, Bedford Park, SA 5042, Australia; Gates, K., Molecular Ecology Lab, Flinders University, Bedford Park, SA 5042, Australia; Brauer, C.J., Molecular Ecology Lab, Flinders University, Bedford Park, SA 5042, Australia; Smith, S., Molecular Ecology Lab, Flinders University, Bedford Park, SA 5042, Australia, Konrad Lorenz Institute of Ethology, University of Veterinary Medicine, Vienna, 1160, Austria; Bernatchez, L., Institut de Biologie Intégrative et des Systèmes, Université Laval, Québec, QC G1V 0A6, Canada; Beheregaray, L.B., Molecular Ecology Lab, Flinders University, Bedford Park, SA 5042, Australia
推荐引用方式 GB/T 7714	Sandoval-Castillo J.,Gates K.,Brauer C.J.,et al. Adaptation of plasticity to projected maximum temperatures and across climatically defined bioregions[J],2020,117(29).
APA	Sandoval-Castillo J.,Gates K.,Brauer C.J.,Smith S.,Bernatchez L.,&Beheregaray L.B..(2020).Adaptation of plasticity to projected maximum temperatures and across climatically defined bioregions.Proceedings of the National Academy of Sciences of the United States of America,117(29).
MLA	Sandoval-Castillo J.,et al."Adaptation of plasticity to projected maximum temperatures and across climatically defined bioregions".Proceedings of the National Academy of Sciences of the United States of America 117.29(2020).