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Characterization of <i>SOD</i> and <i>GPX</i> Gene Families in the Soybeans in Response to Drought and Salinity Stresses

Plant stresses causing accumulation of reactive oxidative species (ROS) are scavenged by effective antioxidant defense systems. Therefore, the present study performed genome-wide identification of superoxide dismutase (<i>SOD</i>) and glutathione peroxidase (<i>GPX</i>) gene...

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Main Authors: Muqadas Aleem (Author), Saba Aleem (Author), Iram Sharif (Author), Zhiyi Wu (Author), Maida Aleem (Author), Ammara Tahir (Author), Rana Muhammad Atif (Author), Hafiza Masooma Naseer Cheema (Author), Amir Shakeel (Author), Sun Lei (Author), Deyue Yu (Author), Hui Wang (Author), Prashant Kaushik (Author), Mohammed Nasser Alyemeni (Author), Javaid Akhter Bhat (Author), Parvaiz Ahmad (Author)
Format: Book
Published: MDPI AG, 2022-02-01T00:00:00Z.
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Summary:Plant stresses causing accumulation of reactive oxidative species (ROS) are scavenged by effective antioxidant defense systems. Therefore, the present study performed genome-wide identification of superoxide dismutase (<i>SOD</i>) and glutathione peroxidase (<i>GPX</i>) gene families in cultivated and wild soybeans, and 11 other legume species. We identified a total of 101 and 95 genes of <i>SOD</i> and <i>GPX</i>, respectively, across thirteen legume species. The highest numbers of <i>SODs</i> and <i>GPXs</i> were identified in cultivated (<i>Glycine max</i>) and wild (<i>Glycine soja</i>). A comparative phylogenetic study revealed highest homology among the <i>SODs</i> and <i>GPXs</i> of cultivated and wild soybeans relative to other legumes. The exon/intron structure, motif and synteny blocks were conserved in both soybean species. According to Ka/Ks, purifying the selection played the major evolutionary role in these gene families, and segmental duplication are major driving force for <i>SODs</i> and <i>GPXs</i> expansion. In addition, the qRT-PCR analysis of the <i>G. max</i> and <i>G. soja SOD</i> and <i>GPX</i> genes revealed significant differential expression of these genes in response to oxidative, drought and salinity stresses in root tissue. In conclusion, our study provides new insights for the evolution of <i>SOD</i> and <i>GPX</i> gene families in legumes, and provides resources for further functional characterization of these genes for multiple stresses.
Item Description:10.3390/antiox11030460
2076-3921

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