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栄養素による内皮分化の可塑性による根機能の適応
Marie Barberon1, Joop Engelbertus Martinus Vermeer1, Damien De Bellis2
1Department of Plant Molecular Biology, University of Lausanne, 1015 Lausanne, Switzerland.
Cell
|January 19, 2016
まとめ
植物の根は,アブシシ酸とエチレンを含むプロセスである内皮のサブライゼーションを調節することによって,栄養ストレスに適応します. 栄養素の吸収を制御し ホメオスタシスを維持できます
科学分野:
- 植物生物学
- 植物生理学
- 分子生物学
背景:
- 植物の根は土壌から必要なミネラルを選択的に吸収し 特殊な細胞構造を必要とします
- 植物内皮は,カスパリアン帯とサブリン層で,拡散障壁として作用します.
- 二次性内皮分化により,保護層が分化され,吸収機能が変化すると考えられている.
研究 の 目的:
- 植物栄養素の恒常性における内皮性サブレイゼーションの役割を調査する.
- 栄養ストレスへの反応として,サブライゼーションを調節するシグナル伝達経路を決定する.
- サベライゼーションのダイナミックな調節と生理学的関連性を探求する.
主な方法:
- 様々な栄養ストレス条件下でのサブライゼーションパターンの分析.
- アブシシ酸とエチレンを使ったホルモン治療
- エチレンへの反応としてスベリン分解の評価
- 栄養素の吸収とサベライゼーションの変化を関連付ける生理学的測定
主要な成果:
- エンドodermal suberizationは,栄養のストレスの幅広いスペクトルによって誘発されます.
- アブシシ酸とエチレンは,ストレス誘発性サブライゼーションの重要な媒介です.
- エチレンはスベリンの選択的な分解を誘発し,ダイナミックな調節を示します.
- サベライゼーションの変化は適応性があり,栄養素の恒常性には極めて重要です.
結論:
- 植物内皮は,栄養素の利用可能性に応じて,動的にサブライゼーションを調節する.
- アブシシ酸とエチレン制御によるホルモンシグナル伝達経路.
- エンドodermal suberizationは,根の栄養素ホメオスタシスの維持に重要な役割を果たしています.
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