植物原生体膜の電気特性におけるオスモス作用による変化
Science (New York, N.Y.)
|October 28, 1977
まとめ
植物細胞のチュールゴーは,電位に影響を及ぼします. エロデアとたばこを含む植物細胞のデプラズモリシスは,膜ポテンシャルを電子負性へとシフトさせ,ターゴーは細胞ポテンシャル決定因子に影響することを示しています.
科学分野:
- 植物生理学 植物生理学
- 細胞生物学 細胞生物学
- 電気生理学 電気生理学
背景:
- 細胞の電気ポテンシャルは,植物の様々な生理学的プロセスに不可欠です.
- 膜ポテンシャルに影響を与える要因を理解することは,植物細胞機能の鍵です.
研究 の 目的:
- 異なる種間の植物原生体の内部電気的潜在性を調査する.
- 細胞のターガーと細胞の電気ポテンシャルとの関係を調べる.
- 植物細胞の膜潜在にデプラズモリシスがどのように影響するかを決定する.
主な方法:
- 6種の植物のプロトプラストの内部電気ポテンシャルの測定.
- プラズモライズされた葉の細胞における電気的潜在力の分析.
- エロデアの葉細胞と再生した細胞壁を持つたばこ原プラスチックにおけるデプラズモリシス中の電気ポテンシャル変化のモニタリング.
主要な成果:
- 6つの植物種すべてから採取された原形質は,正の内部電気ポテンシャルを示した.
- プラズモライズされた葉の細胞は,同様の大きさの正電圧を示した.
- エロデアの葉の細胞とたばこのプロトプラストは,デプラズモリシス過程でより電子陰性になった.
結論:
- 細胞突起は,細胞の電気ポテンシャルを決定する膜成分を調節する上で重要な役割を果たします.
- デプラズモリシス中の電子負性の観測された変化は,膜電気生理学に対する高圧のダイナミックな影響を強調しています.
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