2020年10月27日
A new role for histone demethylases in the maintenance of plant genome integrity
eLife
- 巻
- 9
- 号
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.7554/elife.58533
- 出版者・発行元
- eLife Sciences Publications, Ltd
Histone modifications deposited by the Polycomb repressive complex 2 (PRC2) play a critical role in the control of growth, development, and adaptation to environmental fluctuations of most multicellular eukaryotes. The catalytic activity of PRC2 is counteracted by Jumonji-type (JMJ) histone demethylases, which shapes the genomic distribution of H3K27me3. Here, we show that two JMJ histone demethylases in <italic>Arabidopsis</italic>, EARLY FLOWERING 6 (ELF6) and RELATIVE OF EARLY FLOWERING 6 (REF6), play distinct roles in H3K27me3 and H3K27me1 homeostasis. We show that failure to reset these chromatin marks during sexual reproduction results in the transgenerational inheritance of histone marks, which cause a loss of DNA methylation at heterochromatic loci and transposon activation. Thus, Jumonji-type histone demethylases play a dual role in plants by helping to maintain transcriptional states through development and safeguard genome integrity during sexual reproduction.
- リンク情報
- ID情報
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- DOI : 10.7554/elife.58533
- eISSN : 2050-084X