The Role of Phosphoinositide-Specific PLC in Plant Growth and Development
LI Hui, YANG Ning*, LIU Ruirui, ZHOU Yaping, GAO Run, DU Yaqin
PLC (phospholipase C) is an important allosteric enzyme in signal transduction pathway, which exists widely in prokaryotes and eukaryotes. PLC can produce DAG (diacylglycerol) and IP3 (inositol triphosphate) by hydrolyzing the phosphodiester bond on the phosphatidylinositol head group. PLC and its hydrolysates DAG and IP3 are involved in different stages of plant development, such as seed germination, seedling growth, flower development and fruit ripening. Based on various substrates, PLC with the biological activity is divided into NPC (non-specific PLC) and PI-PLC (phosphoinositide-specific PLC) in plants. There are differences in structure, activation conditions, substrate specificity, hydrolyzed products in different PLCs. The inactivation or mutation of PLC can cause serious damage to plants. This paper summarizes the structural characteristics, classification and specific expression of plant PLC, and role of PI-PLC in response to abiotic and biological stress and its interaction with plant hormones are discussed emphatically.
CN
EN