Characterization of Somatic Embryogenesis Receptor-Like Kinase 4 as a Negative Regulator of Leaf Senescence in Arabidopsis
Characterization of Somatic Embryogenesis Receptor-Like Kinase 4 as a Negative Regulator of Leaf Senescence in Arabidopsis
复制标题
体细胞胚胎发生受体样激酶 4 作为拟南芥叶片衰老负调节因子的表征。
DOI：
10.3390/cells8010050
复制
发表时间：
2019-01-01
期刊：
影响因子：
6
通讯作者：
Guo, Yongfeng
中科院分区：
文献类型：
--
作者：
Li, Xiaoxu;Ahmad, Salman;Guo, Yongfeng
叶片衰老是一个受遗传控制的过程，涉及细胞外信号的感知和信号转导。受体样蛋白激酶（receptor-like protein kinases，RLK）是一类重要的细胞表面受体，参与多种生物学过程，如发育和应激反应。许多RLK成员的功能已经在拟南芥和其他植物物种中被表征，但是只有有限数量的RLK蛋白被报道与叶衰老相关。在本研究中，我们的特点是体细胞胚胎发生受体激酶4（SERK 4）基因在叶片衰老的作用。拟南芥中SERK 4的表达在叶片衰老过程中和几种非生物胁迫处理中上调。发现serk 4 -1敲除突变体显示出显著的早期叶片衰老表型。此外，过量表达分析和互补分析的结果支持SERK 4在叶片衰老过程中起负调控作用的观点。
Leaf senescence is a genetically controlled process that involves the perception of extracellular signals and signal transduction. The receptor-like protein kinases (RLKs) are known to act as an important class of cell surface receptors and are involved in multiple biological processes such as development and stress responses. The functions of a number of RLK members have been characterized in Arabidopsis and other plant species, but only a limited number of RLK proteins have been reported to be associated with leaf senescence. In the present study, we have characterized the role of the somatic embryogenesis receptor kinase 4 (SERK4) gene in leaf senescence. The expression of SERK4 was up-regulated during leaf senescence and by several abiotic stress treatments in Arabidopsis. The serk4-1 knockout mutant was found to display a significant early leaf senescence phenotype. Furthermore, the results of overexpression analysis and complementary analysis supported the idea that SERK4 acts as a negative regulator in the process of leaf senescence.