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Epigenetic Regulation of a Heat-Activated Retrotransposon in Cruciferous Vegetables

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Title: Epigenetic Regulation of a Heat-Activated Retrotransposon in Cruciferous Vegetables
Authors: Nozawa, Kosuke Browse this author
Kawagishi, Yuki Browse this author
Kawabe, Akira Browse this author
Sato, Mio Browse this author
Masuta, Yukari Browse this author
Kato, Atsushi Browse this author →KAKEN DB
Ito, Hidetaka Browse this author →KAKEN DB
Keywords: Heat stress
Issue Date: 2017
Journal Title: Epigenomes
Volume: 1
Issue: 1
Start Page: 7
Publisher DOI: 10.3390/epigenomes1010007
Abstract: Transposable elements (TEs) are highly abundant in plant genomes. Environmental stress is one of the critical stimuli that activate TEs. We analyzed a heat-activated retrotransposon, named ONSEN, in cruciferous vegetables. Multiple copies of ONSEN-like elements (OLEs) were found in all of the cruciferous vegetables that were analyzed. The copy number of OLE was high in Brassica oleracea, which includes cabbage, cauliflower, broccoli, Brussels sprout, and kale. Phylogenic analysis demonstrated that some OLEs transposed after the allopolyploidization of parental Brassica species. Furthermore, we found that the high copy number of OLEs in B. oleracea appeared to induce transpositional silencing through epigenetic regulation, including DNA methylation. The results of this study would be relevant to the understanding of evolutionary adaptations to thermal environmental stress in different species.
Rights: © 2017 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution License (
Type: article
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 伊藤 秀臣

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