グルタミン酸は,カルシウムベースの長距離植物防御信号を誘発する
Masatsugu Toyota1,2,3, Dirk Spencer2, Satoe Sawai-Toyota2
1Department of Biochemistry and Molecular Biology, Saitama University, Saitama 338-8570, Japan. mtoyota@mail.saitama-u.ac.jp sgilroy@wisc.edu.
Science (New York, N.Y.)
|September 15, 2018
まとめ
グルタミン酸は動物の神経伝達物質で 植物でも傷の信号として作用します 植物のグルタミン酸受容体のようなチャネルが この信号を検知し,カルシウム増加と遠隔防御反応を誘発する.
科学分野:
- 植物生物学
- 分子信号
- 生物化学
背景:
- 動物はグルタミン酸を 神経伝達物質として 迅速かつ長距離の信号伝達に使います
- 植物はまた 草食動物の攻撃のような 局所的な刺激に対する 反応を調整するための 遠隔信号も持っています
研究 の 目的:
- 植物におけるシグナル伝達分子としてのグルタミン酸の役割を調査する.
- グルタミン酸媒介信号を感知する植物受容体を特定する.
主な方法:
- 傷に対する植物の反応の実験分析
- グルタミン酸受容体のような (GLR) 経路の機能を研究する.
- 細胞内カルシウムイオン濃度の変化を測定する.
主要な成果:
- グルタミン酸は 植物の傷が誘発するシグナルとして特定されました
- グルタミン酸受容体のようなチャネルがグルタミン酸センサーとして作用することが示された.
- 信号伝達には 細胞内カルシウムが増加し 遠くの組織に広がります
結論:
- グルタミン酸は 植物における長距離傷跡信号として機能します
- GLRチャネルは,グルタミン酸信号をカルシウムベースの伝播に変換します.
- このメカニズムは 植物における全身防御反応の迅速な活性化を可能にします
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