光周期途径E3泛素连接酶的开花调控机制

Regulation of E3 Ubiquitin Ligase in Photoperiod Dependent Flowering

开花是植物生长发育过程中非常重要的一个环节,光周期是影响植物开花的主要环境因素。E3泛素连接酶对光周期依赖型的开花起着重要调控作用。已发现的光周期调控开花途径中多种组分均为E3泛素连接酶的靶蛋白,它们能通过E3泛素连接酶介导实现其泛素化降解,从而影响光周期信号,调控开花。综述了E3泛素连接酶在参与调控光受体稳定性、生物钟功能以及开花调控因子CO稳定性三个方面的研究进展。

Flowering is very important in the development of plants,and the photoperiod is a main environmental factor affecting plant flowering.The E3 ubiquitin ligases plays an important role in regulation of photoperiod dependent flowering.Some of the components in photoperiod regulated flowering pathway are the targets of E3 ubiquitin ligase,which could be degraded by E3 ubiquitin ligase-mediated pathway to regulate flowering through affecting photoperiod signal.Here,we review the function and molecular mechanism of Arabidopsis E3 ubiquitin ligases in flowering pathway in regulating photoperiod dependent flowering.