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DRD1, a SWI/SNF-like chromatin remodeling protein, regulates a heat-activated transposon in Arabidopsis thaliana

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Title: DRD1, a SWI/SNF-like chromatin remodeling protein, regulates a heat-activated transposon in Arabidopsis thaliana
Authors: Takehira, Kanako Browse this author
Hayashi, Yui Browse this author
Nozawa, Kosuke Browse this author
Chen, Lu Browse this author
Suzuki, Takamasa 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
RNA-directed DNA methylation
Issue Date: 8-Aug-2021
Publisher: The Genetics Society of Japan
Journal Title: Genes & Genetic Systems
Volume: 96
Start Page: 1
End Page: 8
Publisher DOI: 10.1266/ggs.21-00005
Abstract: ONSEN is a heat-activated LTR retrotransposon in Arabidopsis thaliana. Screens to identify transcriptional regulatory factors of ONSEN revealed a SWI/SNF-like chromatin remodeling protein, DRD1, which cooperates with plant-specific RNA polymerase and is involved in RNA-directed DNA methylation. ONSEN transcript level was increased in the drd1 mutant relative to wild-type under heat stress, indicating that DRD1 plays a significant role in the silencing of activated ONSEN under the stress condition. The transcript level of HsfA2, which is directly involved in transcriptional activation of ONSEN, was not higher in the drd1 mutant than in the wild-type. Interestingly, no transgenerational transposition of ONSEN was observed in the drd1 mutant, even though DNA methylation levels were significantly reduced and expression levels were increased compared to the wild-type. These results suggest that other factors are involved in the regulation of ONSEN transposition in addition to the transcript level of ONSEN.
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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