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タイトル: | BPG4 regulates chloroplast development and homeostasis by suppressing GLK transcription factors and involving light and brassinosteroid signaling |
著者: | Tachibana, Ryo Abe, Susumu Marugami, Momo Yamagami, Ayumi https://orcid.org/0000-0003-4222-4769 (unconfirmed) Akema, Rino Ohashi, Takao Nishida, Kaisei Nosaki, Shohei Miyakawa, Takuya https://orcid.org/0000-0001-5957-3549 (unconfirmed) Tanokura, Masaru Kim, Jong-Myong Seki, Motoaki Inaba, Takehito Matsui, Minami Ifuku, Kentaro https://orcid.org/0000-0003-0241-8008 (unconfirmed) Kushiro, Tetsuo Asami, Tadao Nakano, Takeshi https://orcid.org/0000-0002-3188-7770 (unconfirmed) |
著者名の別形: | 立花, 諒 阿部, 晋 丸上, 萌々 山上, あゆみ 明間, 莉乃 大橋, 隆生 西田, 快世 野﨑, 翔平 宮川, 拓也 田之倉, 優 金, 鍾明 関, 原明 稲葉, 丈人 松井, 南 伊福, 健太郎 久城, 哲夫 浅見, 忠男 中野, 雄司 |
キーワード: | Brassinosteroid Plant development Plant signalling |
発行日: | 8-Jan-2024 |
出版者: | Springer Nature |
誌名: | Nature Communications |
巻: | 15 |
論文番号: | 370 |
抄録: | Chloroplast development adapts to the environment for performing suitable photosynthesis. Brassinosteroids (BRs), plant steroid hormones, have crucial effects on not only plant growth but also chloroplast development. However, the detailed molecular mechanisms of BR signaling in chloroplast development remain unclear. Here, we identify a regulator of chloroplast development, BPG4, involved in light and BR signaling. BPG4 interacts with GOLDEN2-LIKE (GLK) transcription factors that promote the expression of photosynthesis-associated nuclear genes (PhANGs), and suppresses their activities, thereby causing a decrease in the amounts of chlorophylls and the size of light-harvesting complexes. BPG4 expression is induced by BR deficiency and light, and is regulated by the circadian rhythm. BPG4 deficiency causes increased reactive oxygen species (ROS) generation and damage to photosynthetic activity under excessive high-light conditions. Our findings suggest that BPG4 acts as a chloroplast homeostasis factor by fine-tuning the expression of PhANGs, optimizing chloroplast development, and avoiding ROS generation. |
記述: | 葉緑体の発達を適正に制御する新しい因子を発見. 京都大学プレスリリース. 2024-01-23. |
著作権等: | © The Author(s) 2024 This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. |
URI: | http://hdl.handle.net/2433/286758 |
DOI(出版社版): | 10.1038/s41467-023-44492-5 |
PubMed ID: | 38191552 |
関連リンク: | https://www.kyoto-u.ac.jp/ja/research-news/2024-01-23-0 |
出現コレクション: | 学術雑誌掲載論文等 |
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