ポテトのアーバスキュラを含む細胞で表現されたリン酸輸送物質
1Federal Institute of Technology (ETH) Zurich, Institute of Plant Sciences, Experimental Station Eschikon 33, 8315 Lindau, Switzerland.
Nature
|November 24, 2001
まとめ
植物の土地の植民に不可欠なアーバスキュラー菌根の共生は,栄養素の交換を伴う. 研究者らは,ポテトのStPT3リン酸トランスポーター遺伝子を特定し,この重要な植物と真菌のパートナーシップにおけるその役割を明らかにしました.
科学分野:
- 植物生物学 植物生物学
- 菌類学 菌類学とは
- 遺伝学 遺伝学とは
背景:
- 茂み状菌根は,一般的な植物根の共生であり,土地の植民に不可欠である.
- この相互の共生は,植物がリンを,真菌がグルコースを摂取することで,栄養素の交換を容易にする.
- 状菌糸体共生の基礎となる分子メカニズムは,依然としてほとんど解明されていない.
研究 の 目的:
- ポテトの状菌根共生に関与する重要な遺伝子を特定する.
- リン酸輸送遺伝子StPT3.3の機能と発現パターンを調査する.
主な方法:
- 酵母補充の測定は,タンパク質の機能性を確認するために行われます.
- 遺伝子発現パターンを決定するためにRNAの局所化とリポーター遺伝子発現分析を行います.
- StPT3プロモーター地域のバイオ情報分析.
主要な成果:
- リン酸トランスポーター遺伝子StPT3は,ジャガイモ (Solanum tuberosum) で特定されました.
- StPT3タンパク質の機能性は,酵母補充によって確認されました.
- 菌根構造を形成するジャガイモの根領域でStPT3発現が観察されました.
- StPT3のプロモーターモチーフは,共生進化における遺伝的再編成の役割を示唆しています.
結論:
- StPT3遺伝子は,ジャガイモの状菌根共生に役割を果たしています.
- StPT3プロモーターの遺伝的再編成が,この相互共生の進化に寄与した可能性がある.
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