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AP2/ERF transcription factor GmDREB1 confers drought tolerance in transgenic soybean by interacting with GmERFs

文献类型： 外文期刊

作者： Chen, Kai 1 ; Tang, Wensi 1 ; Zhou, Yongbin 1 ; Chen, Jun 1 ; Xu, Zhaoshi 1 ; Ma, Rui 2 ; Dong, Yingshan 2 ; Ma, Youzhi 1 ; Chen, Ming 1 ;

作者机构： 1.Inst Crop Sci, Chinese Acad Agr Sci CAAS, Natl Key Facil Crop Gene Resources & Genet Improv, Key Lab Biol & Genet Improvement Triticeae Crops, Beijing 100081, Peoples R China

2.Jilin Acad Agr Sci, Jilin Prov Key Lab Agr Biotechnol, Changchun 130033, Peoples R China

关键词： Soybean; Drought resistance; AP2; ERF transcription factor; DREB-like transcription factor; ERF-like transcription factor

期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：5.437； 五年影响因子：5.731 ）

ISSN： 0981-9428

年卷期： 2022 年 170 卷

页码：

收录情况： SCI

摘要： Soybean is the main economic crop, and also the main source of oil and protein for human consumption. Drought stress has a great influence on the growth and yield of soybean crops. Therefore, improving the drought resistance of soybean, especially drought resistance in the field, is important to increase soybean yield. AP2/ERF (APETALA2/ethylene responsive factor) transcription factors are one of the largest families of transcription factors in plants. However, there has been little research on the value of applying DREB (dehydration-responsive element-binding)-like genes in improving the drought resistance of soybean. Here, we further study the value of the application of GmDREB1 in soybean. The results of drought resistance identification in the field and greenhouse showed that the overexpression of GmDREB1 could significantly enhance the drought resistance of transgenic soybean, and the yield was clearly higher than that of the wild type. GmDREB1 has transcriptional activity and is located in the nucleus. For mechanism analysis of GmDREB1 in soybean, two ERF-like transcription factors, GmERF008 and GmERF106, were shown to interact with GmDREB1 using yeast two-hybrid (Y2H) and bimolecular fluorescence complementary (BiFC) experiments. qRT-PCR (quantitative real-time PCR) results showed that the expression of many stress-related genes in GmDREB1 transgenic soybean were significantly up-regulated compared with the WT under a drought environment. In conclusion, GmDREB1 can regulate the expression of downstream stress-related genes by forming a heterodimer with ERF-like transcription factors, which can improve the drought resistance of transgenic soybean.

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