DOI: 10.1111/1365-2435.13497
论文题名: Environmental change and the evolution of genomes: Transposable elements as translators of phenotypic plasticity into genotypic variability
作者: Pimpinelli S. ; Piacentini L.
刊名: Functional Ecology
ISSN: 2698463
出版年: 2020
卷: 34, 期: 2 语种: 英语
英文关键词: environmental stress
; evolution
; transposable elements
Scopus关键词: adaptation
; climate change
; environmental change
; environmental conditions
; environmental stress
; evolution
; evolutionary biology
; gene expression
; genetic variation
; genome
; genotype
; phenotypic plasticity
英文摘要: Phenotypic plasticity is generally explained as the result of epigenetic mechanisms modifying gene expression in response to changing environmental conditions. However, the biology of transposable elements (TEs) suggests that such elements may also induce differential gene expression by affecting regulatory regions. We discuss the ecological and evolutionary relevance of epigenetic modifications versus transposon activity, taking into account that epigenetic modifications are generally reversible but that the modifications induced by TEs are stably inherited. We outline our perspective on the multiple roles played by environmental changes in the context of adaptive evolution. Environmental perturbations can induce phenotypic variations via epigenetic modulation of gene expression and promote, at the same time, genetic variability by triggering bursts of TE activity; finally, they select which genetic variations are most advantageous for survival. Within this context, the production of environmentally induced advantageous phenotypes by epigenetic mechanisms could represent an immediate process of adaptation followed by TE-induced genotypic changes that make these phenotypic variants heritable through the germ line. This scenario could lead TEs to play different roles in the function of the time-scale of ecological variation, such as those related to climatic change in the current context of global change. In conclusion, we propose that through TE activation, environmental changes can act as inducers of genetic variability, upon which they also act as selective forces, thus triggering rapid evolutionary processes. A free Plain Language Summary can be found within the Supporting Information of this article. © 2019 British Ecological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159458
Appears in Collections: 气候变化与战略
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作者单位: Istituto Pasteur Italia Fondazione Cenci-Bolognetti and Department of Biology and Biotechnology ‘C. Darwin’, Sapienza University of Rome, Rome, Italy
Recommended Citation:
Pimpinelli S.,Piacentini L.. Environmental change and the evolution of genomes: Transposable elements as translators of phenotypic plasticity into genotypic variability[J]. Functional Ecology,2020-01-01,34(2)