Characterization of a Drought-Induced Betaine Aldehyde Dehydrogenase Gene SgBADH from Suaeda glauca
文献类型： 外文期刊
作者： Jin, Hangxia 1 ; Tang, Min 2 ; Zhu, Longmin 1 ; Yu, Xiaomin 1 ; Yang, Qinghua 1 ; Fu, Xujun 1 ;
作者机构： 1.Zhejiang Acad Agr Sci, Inst Crops & Nucl Technol Utilizat, Key Lab Digital Upland Crops Zhejiang Prov, Hangzhou 310021, Peoples R China
2.Hangzhou Inst Food & Drug Control, Hangzhou 310022, Peoples R China
关键词： betaine aldehyde dehydrogenases; Suaeda glauca; Arabidopsis thaliana; drought stress
期刊名称：PLANTS-BASEL （ 影响因子：4.1； 五年影响因子：4.5 ）
ISSN： 2223-7747
年卷期： 2024 年 13 卷 19 期
页码：
收录情况： SCI
摘要： Betaine aldehyde dehydrogenases (BADHs) are key enzymes in the biosynthesis of glycine betaine, which is an important organic osmolyte that maintains cell structure and improves plant tolerance to abiotic stresses, especially in halotolerant plants. Improving the drought tolerance of crops will greatly increase their yield. In this study, a novel BADH gene named SgBADH from Suaeda glauca was induced by drought stress or abscisic acid. To explore the biological function of SgBADH, the SgBADH gene was transformed into Arabidopsis. Then, we found SgBADH-overexpressing Arabidopsis seedlings showed enhanced tolerance to drought stress. SgBADH transgenic Arabidopsis seedlings also had longer roots compared with controls under drought stress, while SgBADH-overexpressing Arabidopsis exhibited increased glycine betaine accumulation and decreased malondialdehyde (MDA) under drought stress. Our results suggest that SgBADH might be a positive regulator in plants during the response to drought.
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