The wound hormone jasmonate.

The wound hormone jasmonate.
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DOI:
10.1016/j.phytochem.2009.07.018
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发表时间:
2009-09
期刊:
影响因子:
3.8
通讯作者:
Howe GA
Howe GA
中科院分区:
生物学2区
文献类型:
--
作者:
Koo AJ;Howe GA

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植物组织极易受到食草动物、病原体、机械应力和其他环境损伤的伤害。面对这些威胁,最佳的植物适应性依赖于复杂的信号转导网络,该网络将与损伤相关的信号与代谢,生长和发育的适当变化联系起来。许多这些伤口诱导的适应性反应是由植物激素茉莉酸酯(JA)的从头合成引发的。最近的研究提供的证据表明,JA通过不同的细胞自主和非自主途径介导全身性伤口反应。在这两种途径中,生物活性JA被基于F盒蛋白的受体系统识别,该受体系统将激素结合与转录阻遏蛋白的泛素依赖性降解偶联。这些结果为理解植物如何识别和响应组织损伤提供了一个新的框架。
Plant tissues are highly vulnerable to injury by herbivores, pathogens, mechanical stress, and other environmental insults. Optimal plant fitness in the face of these threats relies on complex signal transduction networks that link damage-associated signals to appropriate changes in metabolism, growth, and development. Many of these wound-induced adaptive responses are triggered by de novo synthesis of the plant hormone jasmonate (JA). Recent studies provide evidence that JA mediates systemic wound responses through distinct cell autonomous and nonautonomous pathways. In both pathways, bioactive JAs are recognized by an F-box protein-based receptor system that couples hormone binding to ubiquitin-dependent degradation of transcriptional repressor proteins. These results provide a new framework for understanding how plants recognize and respond to tissue injury.
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发表时间: 1998-07-07
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作者:
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