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Lateral Root Inducible System in Arabidopsis and Maize
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奥素通过调节 gibberellin 反应来促进 Arabidopsis 根的生长
Xiangdong Fu1, Nicholas P Harberd
1John Innes Centre, Norwich Research Park, Colney Lane, Norwich NR4 7UH, UK.
Nature
|March 1, 2003
概括
植物激素奥素通过调节细胞对吉伯雷林 (GA) 的反应来控制根生长. 素对于GA诱导的DELLA增长抑制剂的不稳定是必不可少的,影响植物器官的发育.
科学领域:
- 植物生物学 植物生物学
- 分子生物学分子生物学
- 发展生物学 发展生物学
背景情况:
- 植物器官的生长受到关键植物激素奥素的调节.
- 奥素影响细胞增殖和扩大的确切机制尚不清楚.
研究的目的:
- 为了阐明auxin如何调节植物器官生长.
- 调查奥克辛和吉伯雷林 (GA) 信号在根部发育中的相互作用.
主要方法:
- 研究了auxin在根生长调节中的作用.
- 研究了auxin和GA信号通路之间的相互作用.
- 评估了奥克辛对植物核中的DELLA蛋白稳定性的影响.
主要成果:
- 辅酶通过调节细胞对吉伯雷林 (GA) 的反应来控制根生长.
- 对于DELLA蛋白质的GA介导的破坏稳定,例如Arabidopsis RGA.,需要auxin.
- 减少的辅酶运输或信号延迟了GA诱导的RGA从根细胞核中的去除.
结论:
- 素影响GA介导的DELLA蛋白的破坏稳定,从而调节根生长.
- 拍摄顶部使用auxin通过GA信号来对植物器官生长进行远程控制.
- 这项研究揭示了在植物发育中连接auxin和GA通路的新机制.
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