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<p>The heat shock transcription factor (HSF) family of plant plays a key role in growth-development and stress response process. In this study, a total of 31 <i>HSF</i> genes from <i>Bergenia purpurascens</i> (<i>BpHSFs</i>) was identified and subjected to expression pattern analysis based on transcriptomic data. According to phylogenetic analysis, these <i>BpHSF</i> genes were classified into six subfamilies. Through sequence analysis, 10 protein motifs were found in the <i>BpHSF</i> gene family. The composition of motifs varied among different subfamilies, whereas remained relatively conserved within the same subfamily. Ten tissue differentially expressed genes and five salt stress response genes in <i>BpHSF</i> gene family were identified by expression pattern analysis. Among them, <i>BpHSF16</i> was significantly induced by salt stress and proposed be an important factor in salt stress response. Overexpression of <i>BpHSF16</i> in <i>Arabidopsis thaliana</i> enhanced the plant salt tolerance by augmenting the ROS scavenging capacity, achieved through increased levels of POD and CAT, as well as elevated proline concentrations. This paper lays a foundation for further research on the biological functions of <i>BpHSF</i> gene family in regulating the growth-development and stress resistance in <i>B. purpurascens</i>.</p>

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Identification of HSF genes related to salt stress response and functional analysis of BpHSF16 in Bergenia purpurascens

  • 期刊论文

  • 发表日期：

    2025年8月7日

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  • Hongyan Zeng,
  • Zongxiang Jiang,
  • Huan Li,
  • Junyuan Shao,
  • Siyu Wei,
  • Qiankun Zhu

摘要

The heat shock transcription factor (HSF) family of plant plays a key role in growth-development and stress response process. In this study, a total of 31 HSF genes from Bergenia purpurascens (BpHSFs) was identified and subjected to expression pattern analysis based on transcriptomic data. According to phylogenetic analysis, these BpHSF genes were classified into six subfamilies. Through sequence analysis, 10 protein motifs were found in the BpHSF gene family. The composition of motifs varied among different subfamilies, whereas remained relatively conserved within the same subfamily. Ten tissue differentially expressed genes and five salt stress response genes in BpHSF gene family were identified by expression pattern analysis. Among them, BpHSF16 was significantly induced by salt stress and proposed be an important factor in salt stress response. Overexpression of BpHSF16 in Arabidopsis thaliana enhanced the plant salt tolerance by augmenting the ROS scavenging capacity, achieved through increased levels of POD and CAT, as well as elevated proline concentrations. This paper lays a foundation for further research on the biological functions of BpHSF gene family in regulating the growth-development and stress resistance in B. purpurascens.