ダウンロード数: 59
このアイテムのファイル:
ファイル | 記述 | サイズ | フォーマット | |
---|---|---|---|---|
pld3.387.pdf | 3.71 MB | Adobe PDF | 見る/開く |
タイトル: | Effects of improved sodium uptake ability on grain yields of rice plants under low potassium supply |
著者: | Ochiai, Kumiko Oba, Kousuke Oda, Kanoko Miyamoto, Takuji Matoh, Toru |
著者名の別形: | 落合, 久美子 大塲, 浩介 小田, 佳乃子 宮本, 託志 間藤, 徹 |
キーワード: | beneficial element Oryza sativa potassium QTL rice sodium |
発行日: | Apr-2022 |
出版者: | Wiley |
誌名: | Plant Direct |
巻: | 6 |
号: | 4 |
論文番号: | e387 |
抄録: | Sodium uptake is a factor that determines potassium use efficiency in plants as sodium can partially replace potassium in plant cells. Rice (Oryza sativa) roots usually exclude sodium but actively take it up when the plant is deficient in potassium. In rice roots, a sodium transporter OsHKT2;1 mediates active sodium uptake. We previously revealed that variation in the expression of OsHKT2;1 underlies the variation in sodium accumulation between a low-sodium-accumulating indica cultivar, IR64, and a high-sodium-accumulating japonica cultivar, Koshihikari. In the present study, we evaluated IR64 and its near-isogenic line IR64-K carrying OsHKT2;1 and neighboring genes inherited from Koshihikari for grain yield. IR64-K had a greater average grain yield and harvest index than IR64 in a pot culture experiment with three levels of potassium fertilizer. The differences were most significant under treatment without the potassium fertilizer. IR64-K also showed a slightly higher grain yield than IR64 when grown in a paddy field without applying the potassium fertilizer. These results suggest that enhanced sodium uptake ability improves the grain yield of rice plants under low-potassium-input conditions. |
著作権等: | © 2022 The Authors. Plant Direct published by American Society of Plant Biologists and the Society for Experimental Biology and John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes. |
URI: | http://hdl.handle.net/2433/277077 |
DOI(出版社版): | 10.1002/pld3.387 |
PubMed ID: | 35434473 |
出現コレクション: | 学術雑誌掲載論文等 |
このアイテムは次のライセンスが設定されています: クリエイティブ・コモンズ・ライセンス