摘要
光是植物的唯一能量来源,植物在进化过程中产生不同的光敏色素来感知光信号。光信号通路中元件通常被特异翻译后修饰调节。光敏色素是一种自磷酸化的丝氨酸/苏氨酸蛋白激酶,可以被一些蛋白磷酸酶去磷酸化。通过对光敏色素A(phy A)和光敏色素B(phy B)的自磷酸化位点研究,发现自磷酸化对光敏色素的功能及其介导的信号通路起着非常重要的作用。光激活的光敏色素诱导光敏色素作用因子(PIF)磷酸化,这对于PIF的正常降解及光形态建成的起始是必需的。该文主要介绍了光敏色素信号通路磷酸化修饰的最新进展,以期为深入研究光敏色素信号转导机制提供参考。
Light is the unique source of energy for plants. Plants have evolved a variety of photoreceptors to sense light information. The elements in the light signaling pathway are mainly regulated by several post-translational modifications such as phosphorylation and dephosphorylation. Photochromes, the known auto-phosphorylating serine/threonine kinases, can be dephosphorylated by a few protein phosphatases. Investigation of the autophosphorylation sites in phy- tochrome A （phyA） and phytochrome B （phyB） has revealed that the autophosphorylation of phy is essential for their function and plays a significant role in regulating phytochrome-mediated signaling. The phosphorylation of phyto- chrome-interacting factor （PIF） induced by the light-activated photoreceptor is Critical for PIF degradation and photo- morphogenesis initiation. This review focuses on the recent progress in understanding phosphorylation modification in phytochrome signaling, providing valuable information for further research in this field.
出处
《植物学报》
CAS
CSCD
北大核心
2015年第2期241-254,共14页
Chinese Bulletin of Botany
基金
国家自然科学基金(No.91017002
No.31070247
No.31271460)
