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Background Common bean ( Phaseolus vulgaris ) is an essential crop with high economic value. The growth of this plant is sensitive to environmental stress. Heat shock factor (Hsf) is a family of antiretroviral transcription factors that regulate plant defense system against biotic and abiotic stress. To date, few studies have identified and bio-analyzed  Hsfs  in common bean. Results In this study, 30 Hsf transcription factors (PvHsf1–30) were identified from the PFAM database. The PvHsf1–30 belonged to 14 subfamilies with similar motifs, gene structure and  cis -acting elements. The Hsf members in  Arabidopsis , rice ( Oryza sativa ), maize ( Zea mays ) and common bean were classified into 14 subfamilies. Collinearity analysis showed that  PvHsfs  played a role in the regulation of responses to abiotic stress. The expression of  PvHsfs  varied across different tissues. Moreover, quantitative real-time PCR (qRT-PCR) revealed that most  PvHsfs  were differentially expressed under cold, heat, salt and heavy metal stress, indicating that  PvHsfs  might play different functions depending on the type of abiotic stress. Conclusions In this study, we identified 30 Hsf transcription factors and determined their location, motifs, gene structure,  cis -elements, collinearity and expression patterns. It was found that  PvHsfs  regulates responses to abiotic stress in common bean. Thus, this study provides a basis for further analysis of the function of  PvHsfs  in the regulation of abiotic stress in common bean.

bmc plant biology

Heat shock transcription factor (Hsf) gene family in common bean (Phaseolus vulgaris): genome-wide identification, phylogeny, evolutionary expansion and expression analyses at the sprout stage under abiotic stress