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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Science / Faculty of Science >
Peer-reviewed Journal Articles, etc >
ONSEN shows different transposition activities in RdDM pathway mutants
| Title: | ONSEN shows different transposition activities in RdDM pathway mutants |
| Authors: | Hayashi, Yui Browse this author | | Takehira, Kanako Browse this author | | Nozawa, Kosuke Browse this author | | Suzuki, Takamasa Browse this author | | Masuta, Yukari Browse this author | | Kato, Atsushi Browse this author | | Ito, Hidetaka Browse this author →KAKEN DB |
| Keywords: | Arabidopsis thaliana | | heat stress | | ONSEN | | RdDM | | transposon |
| Issue Date: | Aug-2020 |
| Publisher: | 日本遺伝学会(The Genetics Society of Japan) |
| Journal Title: | Genes & Genetic Systems |
| Volume: | 95 |
| Issue: | 4 |
| Start Page: | 183 |
| End Page: | 190 |
| Publisher DOI: | 10.1266/ggs.20-00019 |
| Abstract: | 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. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/79978 |
| 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)
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