TaASR1-D confers abiotic stress resistance by affecting ROS accumulation and ABA signalling in transgenic wheat
文献类型： 外文期刊
作者： Qiu, Ding 1 ; Hu, Wei 2 ; Zhou, Yu 1 ; Xiao, Jie 1 ; Hu, Rui 1 ; Wei, Qiuhui 1 ; Zhang, Yang 1 ; Feng, Jialu 1 ; Sun, Fushen 1 ;
作者机构： 1.Huazhong Univ Sci & Technol HUST, Coll Life Sci & Technol, Chinese Minist Educ,Key Lab Mol Biophys, Genet Engn Int Cooperat Base,Chinese Minist Sci &, Wuhan, Peoples R China
2.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Key Lab Biol & Genet Resources Trop Crops, Haikou, Hainan, Peoples R China
关键词： ASR; abiotic stress; transgenic wheat; ROS; ABA; grain yield
期刊名称：PLANT BIOTECHNOLOGY JOURNAL （ 影响因子：8.154； 五年影响因子：7.658 ）
ISSN： 1467-7644
年卷期：
页码：
收录情况： SCI
摘要： Cultivating new crop cultivars with multiple abiotic stress tolerances is important for crop production. The abscisic acid-stress-ripening (ASR) protein has been shown to confer abiotic stress tolerance in plants. However, the mechanisms of ASR function under stress condition remain largely unclear. In this study, we characterized all ASR family members in common wheat and constitutively overexpressed TaASR1-D in a commercial hexaploid wheat cultivar Zhengmai 9023. The transgenic wheat plants exhibited increased tolerance to multiple abiotic stresses and increased grain yields under salt stress condition. Overexpression of TaASR1-D conferred enhanced antioxidant capacity and ABA sensitivity in transgenic wheat plants. Further, RNA in situ hybridization results showed that TaASR1-D had higher expression levels in the vascular tissues of leaves and the parenchyma cells around the vascular tissues of roots and stems. Yeast one-hybrid and electrophoretic mobility shift assays revealed that TaASR1-D could directly bind the specific cis-elements in the promoters of TaNCED1 and TaGPx1-D. In conclusion, our findings suggest that TaASR1-D can be used to breed new wheat cultivars with increased multiple abiotic stress tolerances, and TaASR1-D enhances abiotic stress tolerances by reinforcing antioxidant capacity and ABA signalling.
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