CLE多肽激素信号转导在植物维管系统发育分化中的作用

多肽激素参与植物的生长、发育及抗逆等许多生命过程,特别是作为信号分子在细胞与细胞之间的短距离信息交流中起着关键作用。原形成层/形成层细胞通过分裂与分化,在保持自身分生活性的同时,不断生成木质部和韧皮部细胞。近年来研究表明,CLE多肽激素及其类受体激酶通过独特的信号转导机制决定着维管形成层细胞的命运,在调节维管系统的发育方面具有重要的作用。以维管组织为重点,着重介绍CLE多肽激素在控制和影响拟南芥原形成层/形成层细胞分裂和分化方面的信号通路。尽管目前还不清楚CLE多肽激素如何影响木本植物维管形成层的起始、维持及分化,但随着杨树全基因组序列的获得,采用功能基因组学研究策略,将进一步了解林木植物中控制维管形成层细胞分生和分化的重要基因,从而实现调控次生维管系统发育、改良材性的目标。

The Function of CLE Peptide Hormone-Mediated Signaling Transduction in the Development and Differentiation of Plant Vascular System

Peptide hormones are involved in plant growth, development, stress resistance and many other life processes, and especially play a key role as signaling molecules in the short-range cell-cell communication. The procambium/cambium cells continuously generate xylem and phloem cells through division and differentiation, while maintaining their own proliferation activity. Recent studies have shown that CLE peptide hormones and their receptor kinases could determine the vascular cambium cell fate through a uniqu...