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Increased expression diversity buffers the loss of adaptive potential caused by reduction of genetic diversity in new unfavourable environments

文献类型：期刊论文

作者Sang, Tao2,3,4,5; Yan, Juan1; Tao, Chengcheng2,4,5; Xu, Qin4,5; Kang, Lifang4,5; Liu, Wei4,5
刊名BIOLOGY LETTERS
出版日期2019
卷号15期号:1页码:4
关键词adaptation environmental change gene expression natural selection population transcriptomics
ISSN号1744-9561
DOI10.1098/rsbl.2018.0583
英文摘要Mechanisms underlying adaptation to rapid environmental change are issues in evolutionary biology. It is widely accepted that reduction in genetic diversity when suddenly exposed to an unfavourable environment limits the adaptive potential of populations. With growing empirical evidence that expression diversity is likely to increase in the new environment, the role that expression diversity plays in adaptation needs to be theorized. Here, we first established a negative exponential relationship between expression diversity and genetic diversity using a phenomenological differential equation. We then derived a complex trade-off relationship between the changes of expression and genetic diversity, which followed a combination of exponential functions. Furthermore, we found the increase in expression diversity could buffer the loss of adaptive potential as genetic diversity decreased to a certain extent. These theoretical deductions were validated by transcriptomic data of Miscanthus lutarioriparius grown in two experimental fields and supported by good fit and random simulation. These results suggest that increased expression diversity may compensate the loss of genetic diversity and allow the populations to maintain a certain level of phenotypic variation to cope with sudden environmental change. This may buffer the quick diminishing of adaptive potential and consequently increases the change of adaptation to the new environment.
资助项目Key Research Program of the Chinese Academy of Sciences[KFZD-SW-112-01-08] ; National Natural Science Foundation of China[31400284] ; National Natural Science Foundation of China[31500186] ; National Key Research and Development Program of China[2016YFC0500905] ; Youth Innovation Promotion Association, CAS[Y829281G02] ; Project for Autonomous Deployment of the Wuhan Botanical Garden[55Y755271G02]
WOS研究方向Life Sciences & Biomedicine - Other Topics ; Environmental Sciences & Ecology ; Evolutionary Biology
语种英语
WOS记录号WOS:000456789800004
出版者ROYAL SOC
源URL[http://202.127.146.157/handle/2RYDP1HH/6198]  
专题中国科学院武汉植物园
通讯作者Sang, Tao
作者单位1.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Plant Germplasm Enhancement & Special Agr, Wuhan 430074, Hubei, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China
4.Chinese Acad Sci, Inst Bot, Beijing Bot Garden, Beijing 100093, Peoples R China
5.Chinese Acad Sci, Key Lab Plant Resources, Beijing 100093, Peoples R China
推荐引用方式
GB/T 7714		 Sang, Tao,Yan, Juan,Tao, Chengcheng,et al. Increased expression diversity buffers the loss of adaptive potential caused by reduction of genetic diversity in new unfavourable environments[J]. BIOLOGY LETTERS,2019,15(1):4.
APA Sang, Tao,Yan, Juan,Tao, Chengcheng,Xu, Qin,Kang, Lifang,&Liu, Wei.(2019).Increased expression diversity buffers the loss of adaptive potential caused by reduction of genetic diversity in new unfavourable environments.BIOLOGY LETTERS,15(1),4.
MLA Sang, Tao,et al."Increased expression diversity buffers the loss of adaptive potential caused by reduction of genetic diversity in new unfavourable environments".BIOLOGY LETTERS 15.1(2019):4.

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来源：武汉植物园

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