Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14386 |
Tolerance traits related to climate change resilience are independent and polygenic | |
Healy, Timothy M.1; Brennan, Reid S.2; Whitehead, Andrew2; Schulte, Patricia M.1 | |
2018-11-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY
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ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2018 |
卷号 | 24期号:11页码:5348-5360 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada; USA |
英文摘要 | The resilience of organisms to climate change through adaptive evolution is dependent on the extent of genetically based variation in key phenotypic traits and the nature of genetic associations between them. For aquatic animals, upper thermal tolerance and hypoxia tolerance are likely to be a important determinants of sensitivity to climate change. To determine the genetic basis of these traits and to detect associations between them, we compared naturally occurring populations of two subspecies of Atlantic killifish, Fundulus heteroclitus, that differ in both thermal and hypoxia tolerance. Multilocus association mapping demonstrated that 47 and 35 single nucleotide polymorphisms (SNPs) explained 43.4% and 51.9% of variation in thermal and hypoxia tolerance, respectively, suggesting that genetic mechanisms underlie a substantial proportion of variation in each trait. However, no explanatory SNPs were shared between traits, and upper thermal tolerance varied approximately linearly with latitude, whereas hypoxia tolerance exhibited a steep phenotypic break across the contact zone between the subspecies. These results suggest that upper thermal tolerance and hypoxia tolerance are neither phenotypically correlated nor genetically associated, and thus that rates of adaptive change in these traits can be independently fine-tuned by natural selection. This modularity of important traits can underpin the evolvability of organisms to complex future environmental change. |
英文关键词 | association genotype-phenotype hypoxia tolerance oxygen temperature thermal tolerance |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000447760300028 |
WOS关键词 | TROUT ONCORHYNCHUS-MYKISS ; GENOME-WIDE ASSOCIATION ; HYPOXIA TOLERANCE ; THERMAL TOLERANCE ; FUNDULUS-HETEROCLITUS ; RANDOM FOREST ; EVOLUTIONARY ADAPTATION ; TEMPERATURE TOLERANCE ; GENETIC ARCHITECTURE ; NATURAL-POPULATIONS |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/17098 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Univ British Columbia, Dept Zool, Vancouver, BC, Canada; 2.Univ Calif Davis, Dept Environm Toxicol, Davis, CA 95616 USA |
推荐引用方式 GB/T 7714 | Healy, Timothy M.,Brennan, Reid S.,Whitehead, Andrew,et al. Tolerance traits related to climate change resilience are independent and polygenic[J]. GLOBAL CHANGE BIOLOGY,2018,24(11):5348-5360. |
APA | Healy, Timothy M.,Brennan, Reid S.,Whitehead, Andrew,&Schulte, Patricia M..(2018).Tolerance traits related to climate change resilience are independent and polygenic.GLOBAL CHANGE BIOLOGY,24(11),5348-5360. |
MLA | Healy, Timothy M.,et al."Tolerance traits related to climate change resilience are independent and polygenic".GLOBAL CHANGE BIOLOGY 24.11(2018):5348-5360. |
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