トランスポーターに障害がある米粒のの蓄積を減らす
Naoki Yamaji1, Yuma Takemoto1, Takaaki Miyaji2
1Institute of Plant Science and Resources, Okayama University, Chuo 2-20-1, Kurashiki 710-0046, Japan.
Nature
|December 22, 2016
まとめ
研究者達は,米の遺伝子SPDTを特定し, の配分を制御しました. 穀物のリンを減らすことで 肥料の流れが減り,水路の栄養失調を防ぎ 農作物の収穫量に影響を与えません
科学分野:
- 植物生物学
- 農業科学
- 環境科学
背景:
- リンは作物生産に不可欠で,大部分は収穫時に除去されます.
- 穀物のリンは主にフィテートで,人間や家畜には消化不可能なもので,水路の優化につながる.
- 穀物のリンを減らすことは 持続可能な農業の鍵です
研究 の 目的:
- 穀物へのリン 分配を制御する米の遺伝子を特定する.
- SULTRのようなリン配分トランスポーター (SPDT) のリン輸送における機能を調査する.
主な方法:
- 米 (Oryza sativa) の遺伝子ノックアウト
- 穀物と葉のリン分布の分析
- 総リンとフィテート含有量の定量化
主要な成果:
- SPDTのノックアウトライスでは,粒子のリンが減少 (20〜30%) し,葉のリンが増加した.
- 収穫量,種子発芽,芽生えはノックアウトラインでは影響を受けませんでした.
- SPDTはライスノードで機能し,リンを穀物に向かって誘導します.
結論:
- SPDTは,米のリン分布の重要なレギュレータとして作用します.
- SPDTをターゲットにすることで,採掘場からのリン除去を減らす戦略が提供されます.
- このアプローチは,農業における汚染を軽減し,栄養失調のリスクを減らすことができます.
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