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Heat shock transcription factors (Hsfs) are essential elements in plant signal transduction pathways that mediate gene expression in response to various abiotic stresses. Mungbean ( Vigna radiata ) is an important crop worldwide. The emergence of a genome database now allows for functional analysis of mungbean genes. In this study, we dissect the mungbean  Hsfs  using genome-wide identification and expression profiles. We characterized a total of 24  VrHsf  genes and classified them into three groups (A, B, and C) based on their phylogeny and conserved domain structures. All  VrHsf  genes exhibit highly conserved exon-intron organization, with two exons and one intron. In addition, all VrHsf proteins contain 16 distinct motifs. Chromosome location analysis revealed that  VrHsf  genes are located on 8 of the 11 mungbean chromosomes, and that seven duplicated gene pairs had formed among them. Moreover, transcription patterns of  VrHsf  genes varied in different tissues, indicating their different roles in plant growth and development. We identified multiple stress related  cis -elements in  VrHsf  promoter regions 2 kb upstream of the translation initiation codons, and the expression of most  VrHsf  genes was altered under different stress conditions, suggesting their potential functions in stress resistance pathways. These molecular characterization and expression profile analyses of  VrHsf  genes provide essential information for further function investigation.

Molecular Characterization and Expression Profile Analysis of Heat Shock Transcription Factors in Mungbean