論文

査読有り 国際誌
2020年8月

Antagonistic regulation of the gibberellic acid response during stem growth in rice.

Nature
  • Keisuke Nagai
  • Yoshinao Mori
  • Shin Ishikawa
  • Tomoyuki Furuta
  • Rico Gamuyao
  • Yoko Niimi
  • Tokunori Hobo
  • Moyuri Fukuda
  • Mikiko Kojima
  • Yumiko Takebayashi
  • Atsushi Fukushima
  • Yasuyo Himuro
  • Masatomo Kobayashi
  • Wataru Ackley
  • Hiroshi Hisano
  • Kazuhiro Sato
  • Aya Yoshida
  • Jianzhong Wu
  • Hitoshi Sakakibara
  • Yutaka Sato
  • Hiroyuki Tsuji
  • Takashi Akagi
  • Motoyuki Ashikari
  • 全て表示

584
7819
開始ページ
109
終了ページ
114
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1038/s41586-020-2501-8

The size of plants is largely determined by growth of the stem. Stem elongation is stimulated by gibberellic acid1-3. Here we show that internode stem elongation in rice is regulated antagonistically by an 'accelerator' and a 'decelerator' in concert with gibberellic acid. Expression of a gene we name ACCELERATOR OF INTERNODE ELONGATION 1 (ACE1), which encodes a protein of unknown function, confers cells of the intercalary meristematic region with the competence for cell division, leading to internode elongation in the presence of gibberellic acid. By contrast, upregulation of DECELERATOR OF INTERNODE ELONGATION 1 (DEC1), which encodes a zinc-finger transcription factor, suppresses internode elongation, whereas downregulation of DEC1 allows internode elongation. We also show that the mechanism of internode elongation that is mediated by ACE1 and DEC1 is conserved in the Gramineae family. Furthermore, an analysis of genetic diversity suggests that mutations in ACE1 and DEC1 have historically contributed to the selection of shorter plants in domesticated populations of rice to increase their resistance to lodging, and of taller plants in wild species of rice for adaptation to growth in deep water. Our identification of these antagonistic regulatory factors enhances our understanding of the gibberellic acid response as an additional mechanism that regulates internode elongation and environmental fitness, beyond biosynthesis and gibberellic acid signal transduction.

リンク情報
DOI
https://doi.org/10.1038/s41586-020-2501-8
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/32669710
ID情報
  • DOI : 10.1038/s41586-020-2501-8
  • PubMed ID : 32669710

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