【摘要】 SnRK2是植物特有的一类Ser/Thr类蛋白激酶,在植物逆境生理过程中扮演了重要的角色。根据生物学特性可将SnRK2分为SnRK2a和SnRK2b两组,从系谱发生分析,SnRK2家族成员又可分为三个亚族,分别为Group Ⅰ、Group Ⅱ和Group Ⅲ,其中Group Ⅰ属于SnRK2b组,不能被ABA激活,为非ABA依赖型。本文主要总结了非ABA依赖型SnRK2的研究进展,为深入开展非ABA依赖型SnRK2逆境胁迫机制研究提供参考。更多还原

【Abstract】 The SnRK2 family members are plant-specific serine/threonine kinases involved in plant response to abiotic stresses. The SnRK2 kinases are divided into two classes, SnRK2a and SnRK2b, based on the amino acid composition of their divergent C-terminal domains rich in acidic amino acids, either poly-Asp(SnRK2a) or poly-Glu(SnRK2b). Based on a phylogenetic analysis, the SnRK2 family members have been divided into three groups, Group Ⅰ, Group Ⅱ, and Group Ⅲ. Groups Ⅰ of the phylogenic classification correspond to the SnRK2b subfamily which can not be activated by ABA(ABA independent SnRK2). In this summary, the research progress of the ABA independent SnRK2 will be described to reveal its function during the abiotic stresses in plants.更多还原