文献类型： 外文期刊
作者： Jiang, Wen-jun 1 ; Wang, Meng-ting 1 ; Du, Zhi-ye 1 ; Li, Jia-hao 1 ; Shi, Yang 1 ; Wang, Xin 1 ; Wu, Long-ying 1 ; Chen, Ji 2 ; Zhong, Min 1 ; Yang, Ju 1 ; Hu, Bin-hua 3 ; Huang, Jin 1 ;
作者机构： 1.Chengdu Univ Technol, Coll Ecol & Environm, Chengdu 610059, Sichuan, Peoples R China
2.Sichuan Agr Univ, Coll Agron, Chengdu 611130, Sichuan, Peoples R China
3.Sichuan Acad Agr Sci, Inst Biotechnol & Nucl Technol, Chengdu 610066, Sichuan, Peoples R China
关键词： OsDHN2; Rice; Yeast; Cadmium tolerance
期刊名称：FUNCTIONAL & INTEGRATIVE GENOMICS （ 影响因子：2.9； 五年影响因子：3.3 ）
ISSN： 1438-793X
年卷期： 2023 年 23 卷 2 期
页码：
收录情况： SCI
摘要： As a toxic heavy metal, cadmium (Cd) is one of the principal pollutants influencing rice productivity and food security. Despite several studies, the underlying mechanism of Cd response in plants remains largely unclear. Dehydrins are part of the late embryogenesis abundant (LEA) family which protect plants against abiotic stresses. In this study, a Cd-responsive LEA gene, OsDHN2, was functionally characterized. The chromosome localization results indicated that OsDHN2 was located on chromosome 2 of rice. Meanwhile, cis-acting elements, such as MBS (MYB binding site involved in drought-inducibility), ARE (anaerobic induction), and ABRE (abscisic acid), were present in the OsDHN2 promoter region. Expression pattern analysis also showed that OsDHN2 expression was induced in both roots and shoots under Cd stress. Overexpression of OsDHN2 improved Cd tolerance and reduced Cd concentration in yeast. Moreover, increased expression levels of SOD1, CTA1, GSH1, or CTT1 were found in transgenic yeast under Cd stress, suggesting the increased antioxidant enzymatic activities. These results suggested that OsDHN2 is a Cd-responsive gene that has the potential to improve resistance to Cd in rice.
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