Abstract
Vascular plant one-zinc-finger (VOZ) transcription factors regulate plant growth and development under drought conditions. Six VOZ transcription factors encoding genes exist in soybean genome (both in Glycine max and Glycine soja). Herein, GmVOZs and GsVOZs were identified through in silico analysis and characterized with different bioinformatics tools and expression analysis. Phylogenetic analysis classified VOZ genes in four groups. Sequence logos analysis among G. max and G. soja amino acid residues revealed higher conservation. Presence of stress related cis-elements in the upstream regions of GmVOZs and GsVOZs highlights their role in tolerance against abiotic stresses. The collinearity analysis identified 14 paralogous/orthologous gene pairs within and between G. max and G. soja. The Ka/Ks values showed that soybean VOZ genes underwent selection pressure with limited functional deviation arising from whole genome and segmental duplication. The GmVOZs and GsVOZs were found to express in roots and leaves at seedling stage. The qRT-PCR revealed that GmVOZs and GsVOZs transcripts can be regulated by abiotic stresses such as polyethylene glycol (PEG). The findings of this study will provide a reference to decipher physiological and molecular functions of VOZ genes in soybean.
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