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植物の劣化:植物に作用するネモトードエクスパンシン
Ling Qin1, Urszula Kudla, Erwin H A Roze
1Laboratory of Nematology, Graduate School of Experimental Plant Sciences, Wageningen University, 6709 PD Wageningen, The Netherlands.
Nature
|January 1, 2004
まとめ
植物寄生虫である丸虫は,機能的な膨張タンパク質を有しており,侵入中に植物細胞壁を緩めることができる. この発見は,動物には植物細胞壁を劣化させる遺伝的能力がないという考えに異議を唱えている.
科学分野:
- 分子生物学は分子生物学である.
- 植物病理学 植物病理学
- 動物学 動物学
背景:
- 拡張タンパク質は,細胞壁の拡張を誘導する植物酵素として知られており,非共性相互作用を弱めることで細胞壁拡張を誘導する.
- 以前は,その存在は植物界に限ると考えられていた.
研究 の 目的:
- 動物,特に植物寄生性ネマトードにおけるエクスペンシンタンパク質の存在と機能を調査する.
- 宿主-病原体相互作用におけるこれらのタンパク質の役割を理解する.
主な方法:
- Globodera rostochiensis.からのタンパク質の生化学分析
- 識別されたタンパク質の細胞壁緩解活性をテストするための機能分析.
主要な成果:
- 動物のGlobodera rostochiensis.で機能的なエクスペンシンタンパク質が特定されました.
- この動物エクスパンジンは,植物エクスパンジンのように,植物細胞壁を効果的に緩めます.
- ネマトードはまた,植物細胞壁の共性結合を破壊する能力を有しています.
結論:
- Globodera rostochiensisのような動物は,機能的なエクスパンシンを生成することができる.
- これは,植物細胞壁を劣化させるための動物遺伝子の能力が限られているという確立された見解に異議を唱える.
- エクスパンジンは,ネマトードと宿主植物との相互作用において役割を果たします.
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