非生物胁迫
生物
基因
基因家族
非生物成分
安普克
蛋白激酶A
磷酸化
拟南芥
激酶
细胞生物学
生物化学
遗传学
基因表达
生态学
突变体
作者
Subhankar Mondal,Alivia Paul,Debasis Mitra,Chinmay Pradhan,Chandra Shekhar Seth,Krishnendu Chattopadhyay,Koushik Chakraborty
摘要
Abstract Abiotic stresses are a major constraint for agricultural productivity and food security in today's era of climate change. Plants can experience different types of abiotic stresses, either individually or in combination. Sometimes, more than one stress event may occur simultaneously or one after another during the lifecycle of the plant. In general, key survival strategies for stress tolerance may differ from one stress to another. However, at the molecular level, evolutionarily conserved protein kinase SUCROSE NONFERMENTING 1 (SNF1)‐related protein kinase (SnRK) gene family members, comprising SnRK1, SnRK2, and SnRK3 gene families, play a key role in different types of stress and adaptive responses. SnRK gene family members can act as master regulators and regulate the central metabolism of plants, which determines the energy distribution in either survival or growth/developmental processes. The key mechanism of SnRK‐mediated regulation is associated with the phosphorylation of downstream genes, which either induces or dampens the function of target proteins. This may be crucial for maintaining differential morpho‐physiological and biochemical processes in plants, including potassium signalling, ROS homeostasis, sugar signalling, and energy homeostasis. Furthermore, phosphorylation sites associated with different targets were also reviewed, which showed that SnRK‐mediated phosphorylation of Serine and Threonine residues of the target protein is a site‐specific event, where the target consists of specific amino acid sequences, including RXXS/T, Serine–threonine rich regions, or AMPK/SNF1 types. Here, we review different classes of SnRK gene family members and their multifaceted roles in understanding the commonality of SnRK‐mediated responses to multiple abiotic stresses in plants.
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