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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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Title: A small RNA mediated regulation of a stress-activated retrotransposon and the tissue specific transposition during the reproductive period in Arabidopsis
Authors: Matsunaga, Wataru Browse this author
Ohama, Naohiko Browse this author
Tanabe, Noriaki Browse this author
Masuta, Yukari Browse this author
Masuda, Seiji Browse this author →KAKEN DB
Mitani, Namiki Browse this author →KAKEN DB
Yamaguchi-Shinozaki, Kazuko Browse this author
Ma, Jian Feng Browse this author →KAKEN DB
Kato, Atsushi Browse this author →KAKEN DB
Ito, Hidetaka Browse this author →KAKEN DB
Keywords: transposon
small RNA
environmental stress
Arabidopsis thaliana
ONSEN
Issue Date: 9-Feb-2015
Publisher: Frontiers
Journal Title: Frontiers in Plant Science
Volume: 6
Start Page: 48
Publisher DOI: 10.3389/fpls.2015.00048
Abstract: 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.
Rights: http://creativecommons.org/licenses/by/3.0/
Type: article
URI: http://hdl.handle.net/2115/58270
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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