1Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education/Hubei Collaborative Innovation Center for Grain Industry/College of Agriculture, Yangtze University, Jingzhou, Hubei, China
2Institute of Plant Protection and Soil Science, Hubei Academy of Agricultural Sciences, Wuhan, Hubei, China
3Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu, China
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Jiang WJ, Yang LY, He YH, Zhang HZ, Li WL, Chen HC, Ma DM, Yin JY.2018. Genome-wide identification and transcriptional expression analysis of superoxide dismutase (SOD) family in wheat (Triticum aestivum)PeerJ Preprints6:e27402v1https://doi.org/10.7287/peerj.preprints.27402v1
Superoxide dismutases (SODs) are a key antioxidant enzyme family, which plays a critical function in plant growth and development. Previously, this gene family has been investigated in Arabidopsis and rice. In the present study, it was the first time for us to perform a genome-wide analysis of SOD gene family in wheat. And using bioinformatics-based methods, 26 SOD genes were identified from the whole genome of wheat, including 17 Cu/Zn-SODs, 6 Fe-SODs, and 3 Mn-SODs. The chromosomal distribution analysis revealed that SOD genes are only distributed on 2, 4 and 7 chromosomes of wheat. Phylogenetic analyses with SODs from wheat and several other species revealed that these SOD proteins can divided into two major categories. SOD1 is mainly composed of Cu/Zn-SODs, and SOD2 is mainly composed of Fe-SODs and Mn-SODs. Gene structure and motif analysis indicated that most of the SOD genes have relatively conserved exon/intron arrangement and motif composition. Analysis of transcriptional data indicated that most of the wheat SOD genes are expressed in almost all the tested tissues and it possibly have important function in abiotic stress. Taken together, our results provide a basis for further functional research on SOD gene family in wheat and facilitate their potential applications in the genetic improvement of wheat.
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Table S2 Annotation of putative of TaSODs identified by MEME