The AtGSTU7 gene influences glutathione-dependent seed germination under ABA and osmotic stress in Arabidopsis
文献类型： 外文期刊
作者： Wu, Juan 1 ; Zhang, Nan 1 ; Liu, Ziguang 2 ; Liu, Shengyi 3 ; Liu, Chunxiao 4 ; Lin, Jianhui 1 ; Yang, He 1 ; Li, Shuang; 1 ;
作者机构： 1.Northeast Forestry Univ, Coll Life Sci, Key Lab Saline Alkali Vegetat Ecol Restorat, Minist Educ, Harbin 150040, Peoples R China
2.Minist Agr & Rural Affairs, Key Lab Combining Farming & Anim Husb, Heilongjiang Acad Agr Sci, Inst Anim Husb, Harbin 150040, Peoples R China
3.Mudanjiang Med Univ, Mudanjiang 157011, Heilongjiang, Peoples R China
4.Chinese Acad Agr Sci, Inst Special Anim & Plant Sci, State Key Lab Mol Biol Special Econ Anim, Changchun 130112, Peoples R China
5.Nagoya City Univ, Grad Sch Sci, Nagoya, Aichi 4678501, Japan
关键词： Glutathione S-Transferases; Seed germination; ABA signaling; Reactive oxygen species
期刊名称：BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS （ 影响因子：3.575； 五年影响因子：3.381 ）
ISSN： 0006-291X
年卷期： 2020 年 528 卷 3 期
页码：
收录情况： SCI
摘要： Glutathione S-transferases (GSTs) play important roles in metabolism and detoxification of plant cells. However, their functions during development are less well understood. Arabidopsis AtGSTU7 (AT2G29420) encodes a Tau class GST. Here we provide the AtGSTU7 was abundantly expressed in seeds and in roots at an early stage of germination. AtGSTU7 expression was repressed by exogenous ABA and promoted by osmotic stress. A null mutant of AtGSTU7 (atgstu7) accumulated higher contents of reduced GSH and decreased amounts of endogenous H2O2 in seedlings. The atgstu7 plants showed decreased osmotic tolerance during seed germination, which was influenced by GSH and ABI3 gene expression. The results suggested that AtGSTU7 involvement in seed germination is mediated by GSH-ROS homeostasis and ABA signaling. (C) 2020 Elsevier Inc. All rights reserved.
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