ONSEN shows different transposition activities in RdDM pathway mutants

Hayashi, Yui; Takehira, Kanako; Nozawa, Kosuke; Suzuki, Takamasa; Masuta, Yukari; Kato, Atsushi; Ito, Hidetaka

ONSEN shows different transposition activities in RdDM pathway mutants

Hayashi, Yui; Takehira, Kanako; Nozawa, Kosuke et al.

Genes & Genetic Systems, 2020, 95(4), 183-190

Permalink : https://hdl.handle.net/2115/79978

このアイテムのアクセス数:529件（2026-08-07 20:18 集計）

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https://doi.org/10.1266/ggs.20-00019			14

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アクセス権	open access
URI	https://hdl.handle.net/2115/79978
タイトル	ONSEN shows different transposition activities in RdDM pathway mutants
著者	Hayashi, Yui ; Takehira, Kanako ; Nozawa, Kosuke ; Suzuki, Takamasa ; Masuta, Yukari ; Kato, Atsushi ; Ito, Hidetaka
著者名 Hayashi, Yui
著者名 Takehira, Kanako
著者名 Nozawa, Kosuke
著者名 Suzuki, Takamasa
著者名 Masuta, Yukari
著者名 Kato, Atsushi
e-Rad_Researcher 70582295 著者名 Ito, Hidetaka
言語	英語
キーワード	Arabidopsis thaliana
	heat stress
	ONSEN
	RdDM
	transposon
発行日	2020-08
出版者	日本遺伝学会(The Genetics Society of Japan)
収録物名	Genes & Genetic Systems
巻(号)	95(4)
ページ	183-190
抄録	Most transposable elements (TEs) are tightly regulated by epigenetic mechanisms such as DNA methylation. RNA-directed DNA methylation (RdDM) is a major control mechanism of TE silencing in plants. We analyzed the transposition activity of a heat-responsive retrotransposon, ONSEN, in Arabidopsis thaliana. Transgenerational transposition was observed in RdDM pathway-deficient mutants upon heat stress. The transposition frequency was higher in the mutants of the upstream processes, but lower in the mutants of the downstream steps, of RdDM. The transposition frequency was not associated with the number of extrachromosomal ONSEN copies. Constitutive heterochromatin of interphase nuclei was dispersed upon heat stress. The degree of decondensation was higher in the RdDM mutants than in wild-type plants subjected to heat stress. We discuss the possible role of RdDM in the regulation of ONSEN transposition upon heat stress.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
PISSN	1341-7568
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1266/ggs.20-00019