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A small RNA mediated regulation of a stress-activated retrotransposon and the tissue specific transposition during the reproductive period in Arabidopsis

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タイトル: A small RNA mediated regulation of a stress-activated retrotransposon and the tissue specific transposition during the reproductive period in Arabidopsis
著者: Matsunaga, Wataru 著作を一覧する
Ohama, Naohiko 著作を一覧する
Tanabe, Noriaki 著作を一覧する
Masuta, Yukari 著作を一覧する
Masuda, Seiji 著作を一覧する
Mitani, Namiki 著作を一覧する
Yamaguchi-Shinozaki, Kazuko 著作を一覧する
Ma, Jian Feng 著作を一覧する
Kato, Atsushi 著作を一覧する
Ito, Hidetaka 著作を一覧する
キーワード: transposon
small RNA
environmental stress
Arabidopsis thaliana
ONSEN
発行日: 2015年 2月 9日
出版者: Frontiers
誌名: Frontiers in Plant Science
巻: 6
開始ページ: 48
出版社 DOI: 10.3389/fpls.2015.00048
抄録: Transposable elements (TEs) are key elements that facilitate genome evolution of the host organism. A number of studies have assessed the functions of TEs, which change gene expression in the host genome. Activation of TEs is controlled by epigenetic modifications such as DNA methylation and histone modifications. Several recent studies have reported that TEs can also be activated by biotic or abiotic stress in some plants. We focused on a Ty1/copia retrotransposon, ONSEN, that is activated by heat stress (HS) in Arabidopsis. We found that transcriptional activation of ONSEN was regulated by a small interfering RNA (siRNA)-related pathway, and the activation could also be induced by oxidative stress. Mutants deficient in siRNA biogenesis that were exposed to HS at the initial stages of vegetative growth showed transgenerational transposition. The transposition was also detected in the progeny, which originated from tissue that had differentiated after exposure to the HS. The results indicated that in some undifferentiated cells, transpositional activity could be maintained quite long after exposure to the HS.
資料タイプ: article
URI: http://hdl.handle.net/2115/58270
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 伊藤 秀臣

 

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