The transcriptional control of plant responses to phosphate limitation
The transcriptional control of plant responses to phosphate limitation
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DOI：
10.1093/jxb/erh009
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发表时间：
2004-02-01
影响因子：
6.9
通讯作者：
Paz-Ares, J
中科院分区：
文献类型：
--
作者：
Franco-Zorrilla, JM;González, E;Paz-Ares, J
植物已经进化出一系列反应，使它们的生长适应磷酸盐 (Pi) 供应有限的条件。这些涉及生化和发育变化，可改善 Pi 的获取和回收，并防止 Pi 饥饿的压力。这些反应的诱导需要一个复杂的调节系统，该系统集成了植物外部和内部 Pi 状态的信息，并且该调节系统的细节才刚刚开始被阐明。在这篇综述中，总结了目前对该调控系统的认识，其标志是转录因子 PHR1 在许多磷酸盐饥饿反应基因的协调调控中的核心作用。还描述了激素信号传导的作用，包括生长素、乙烯，特别是细胞分裂素在调节 Pi 饥饿反应中的作用。
Plants have evolved an array of responses that adapt their growth to conditions of limited phosphate (Pi) supply. These involve biochemical and developmental changes that improve Pi acquisition and recycling, and protect against the stress of Pi starvation. The induction of these responses requires a sophisticated regulatory system that integrates information on external and internal plant Pi status and the details of this regulatory system are only just beginning to be elucidated. In this review, the current knowledge of this regulatory system is summarized, the hallmark of which is the central role of transcription factor PHR1 in the co-ordinated regulation of many phosphate-starvation-responsive genes. The role of hormonal signalling is also described, including auxins, ethylene and, particularly, cytokinins in the regulation of Pi-starvation responses.