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Genome-Wide Characterization and Expression Profiles of the Superoxide Dismutase Gene Family in Gossypium

文献类型： 外文期刊

作者： Zhang, Jingbo 1 ; Li, Bo 1 ; Yang, Yang 1 ; Hu, Wenran 1 ; Chen, Fangyuan 1 ; Xie, Lixia 1 ; Fan, Ling 1 ;

作者机构： 1.Xinjiang Acad Agr Sci, Inst Nucl & Biol Technol, 403 Nanchang Rd, Urumqi 830091, Peoples R China

2.Xinjiang Normal Univ, Sch Life Sci, 102 Xinyi Rd, Urumqi 830054, Peoples R China

期刊名称：INTERNATIONAL JOURNAL OF GENOMICS （ 影响因子：2.326； 五年影响因子：2.557 ）

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收录情况： SCI

摘要： Superoxide dismutase (SOD) as a group of significant and ubiquitous enzymes plays a critical function in plant growth and development. Previously this gene family has been investigated in Arabidopsis and rice; it has not yet been characterized in cotton. In our study, it was the first time for us to perform a genome-wide analysis of SOD gene family in cotton. Our results showed that 10 genes of SOD gene family were identified in Gossypium arboreum and Gossypium raimondii, including 6 Cu-Zn-SODs, 2 Fe-SODs, and 2 Mn-SODs. The chromosomal distribution analysis revealed that SOD genes are distributed across 7 chromosomes in Gossypium arboreum and 8 chromosomes in Gossypium raimondii. Segmental duplication is predominant duplication event and major contributor for expansion of SOD gene family. Gene structure and protein structure analysis showed that SOD genes have conserved exon/intron arrangement and motif composition. Microarray-based expression analysis revealed that SOD genes have important function in abiotic stress. Moreover, the tissue-specific expression profile reveals the functional divergence of SOD genes in different organs development of cotton. Taken together, this study has imparted new insights into the putative functions of SOD gene family in cotton. Findings of the present investigation could help in understanding the role of SOD gene family in various aspects of the life cycle of cotton.

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