Superoxide dismutase gene family in cassava revealed their involvement in environmental stress via genome-wide analysis
文献类型： 外文期刊
作者： Zheng, Linling 1 ; Hamidou, Abdoulaye Assane 1 ; Zhao, Xuerui 1 ; Ouyang, Zhiwei 2 ; Lin, Hongxin 3 ; Li, Junyi 1 ; Zhang, Xiaofei 4 ; Luo, Kai 1 ; Chen, Yinhua 1 ;
作者机构： 1.Hainan Univ, Sanya Nanfan Res Inst, Sch Life Sci, Sanya 572025, Peoples R China
2.Hainan Univ, HNU ASU Joint Int Tourism Coll, Haikou 570228, Peoples R China
3.Jiangxi Acad Agr Sci, Soil Fertilizer & Resources Environm Inst, Nanchang 330200, Peoples R China
4.Alliance Biovers Int & Int Ctr Trop Agr CIAT, Cali 763537, Colombia
期刊名称：ISCIENCE （ 影响因子：5.8； 五年影响因子：5.8 ）
ISSN：
年卷期： 2023 年 26 卷 10 期
页码：
收录情况： SCI
摘要： Superoxide dismutase (SOD) is a crucial metal-containing enzyme that plays a vital role in catalyzing the dismutation of superoxide anions, converting them into molecular oxygen and hydrogen peroxide, essential for enhancing plant stress tolerance. We identified 8 SOD genes (4 CSODs, 2 FSODs, and 2 MSODs) in cassava. Bioinformatics analyses provided insights into chromosomal location, phylogenetic relationships, gene structure, conserved motifs, and gene ontology annotations. MeSOD genes were classified into two groups through phylogenetic analysis, revealing evolutionary connections. Promoters of these genes harbored stress-related cis-elements. Duplication analysis indicated the functional significance of MeCSOD2/MeCSOD4 and MeMSOD1/MeMSOD2. Through qRT-PCR, MeCSOD2 responded to salt stress, MeMSOD2 to drought, and cassava bacterial blight. Silencing MeMSOD2 increased XpmCHN11 virulence, indicating MeMSOD2 is essential for cassava's defense against XpmCHN11 infection. These findings enhance our understanding of the SOD gene family's role in cassava and contribute to strategies for stress tolerance improvement.
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