Arabidopsis UBC22, an E2 able to catalyze lysine-11 specific ubiquitin linkage formation, has multiple functions in plant growth and immunity

文献类型： 外文期刊

第一作者： Wang, Sheng

作者： Wang, Sheng;Zhao, Liang;Fu, Sanxiong;Wang, Hong;Li, Qiang;Zhao, Liang;Fu, Yong-Bi;Fu, Sanxiong;Qin, Li;Wei, Yangdou

作者机构：

关键词： Protein ubiquitination; Ubiquitin-conjugating; UBC22; K11-linked; Vegetative growth; Plant immunity

期刊名称：PLANT SCIENCE （ 影响因子：4.729； 五年影响因子：5.132 ）

ISSN： 0168-9452

年卷期： 2020 年 297 卷

页码：

收录情况： SCI

摘要： Protein ubiquitination is critical for various biological processes in eukaryotes. A ubiquitin (Ub) chain can be linked through one of the seven lysine (K) residues or the N-terminus methionine of the Ub, and the Ub-conjugating enzymes called E2s play a critical role in determining the linkage specificity of Ub chains. Further, while K48-linked polyubiquitin chain is important for protein degradation, much less is known about the functions of other types of polyubiquitin chains in plants. We showed previously that UBC22 is unique in its ability to catalyze K11-dependent Ub dimer formation in vitro and ubc22 knockout mutants had defects in megasporogenesis. In this study, further analyses of the Arabidopsis ubc22 mutants revealed four subtypes of plants based on the phenotypic changes in vegetative growth. These four subtypes appeared consistently in the plants of three independent ubc22 mutants. Transcriptomic analysis showed that transcript levels of genes related to several pathways were altered differently in different subtypes of mutant plants. In one subtype, the mutant plants had increased expression of genes related to plant defenses and showed enhanced resistance to a necrotrophic plant pathogen. These results suggest multiple functions of UBC22 during plant development and stress response.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序