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Transposable Elements Contribute to the Adaptation of Arabidopsis thaliana.


ABSTRACT: Transposable elements (TEs) are mobile genetic elements with very high mutation rates that play important roles in shaping genome architecture and regulating phenotypic variation. However, the extent to which TEs influence the adaptation of organisms in their natural habitats is largely unknown. Here, we scanned 201 representative resequenced genomes from the model plant Arabidopsis thaliana and identified 2,311 polymorphic TEs from noncentromeric regions. We found expansion and contraction of different types of TEs in different A. thaliana populations. More importantly, we identified two TE insertions that are likely candidates to play a role in adaptive evolution. Our results highlight the importance of variations in TEs for the adaptation of plants in general in the context of rapid global climate change.

SUBMITTER: Li ZW 

PROVIDER: S-EPMC6117151 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature

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Transposable Elements Contribute to the Adaptation of Arabidopsis thaliana.

Li Zi-Wen ZW   Hou Xing-Hui XH   Chen Jia-Fu JF   Xu Yong-Chao YC   Wu Qiong Q   González Josefa J   Guo Ya-Long YL  

Genome biology and evolution 20180801 8


Transposable elements (TEs) are mobile genetic elements with very high mutation rates that play important roles in shaping genome architecture and regulating phenotypic variation. However, the extent to which TEs influence the adaptation of organisms in their natural habitats is largely unknown. Here, we scanned 201 representative resequenced genomes from the model plant Arabidopsis thaliana and identified 2,311 polymorphic TEs from noncentromeric regions. We found expansion and contraction of d  ...[more]

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