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<p>Gibberellin (GA) plays a key role in fruit growth and development, and in this study, we examined the effects of the application of exogenous GA treatment to fruit stalks of <i>Pyrus pyrifolia</i> on fruit growth and gene expression. Application of GA during the full-flowering stage enhanced fruit growth and development and increased fruit weight. Transcriptome profiling of fruit cores taken at 12 and 28 days after treatment identified 769 and 1,469 differentially expressed genes after GA treatment, respectively. In addition, we conducted a comprehensive analysis of WOX family members in <i>P. pyrifolia</i> and clarified their potential roles in fruit growth and development; eight <i>WOX</i> genes showed a significant response to exogenous GA treatment. The overexpression of <i>PyWOX3</i> in <i>Arabidopsis</i> revealed its positive regulatory role in fruit growth and development. In addition, SRR1, villin-1, DDX11, Hb2, LOB6, and KIN-5D were identified as proteins that potentially interact with PyWOX3. Thus, our results indicated the potential of <i>PyWOX3</i> as a genetic target for improving pear fruit size and identified other target genes that regulate fruit size, potentially laying the foundation for utilizing genetic engineering and hormone therapy to manage fruit growth.</p>

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Comprehensive analysis of the WOX family revealed PyWOX3 regulating fruit size in response to GA treatment in Pyrus pyrifolia

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年6月3日

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  • Xunju Liu,
  • Sen Zhang,
  • Hanbin Li,
  • Wanxia Sun,
  • Feiyu Li,
  • Yifan Chen,
  • Yixin Gao,
  • Zifan Tang,
  • Maosen Wang,
  • Irfan Ali Sabir,
  • Jiyuan Wang,
  • Songtao Jiu,
  • Caixi Zhang

摘要

Gibberellin (GA) plays a key role in fruit growth and development, and in this study, we examined the effects of the application of exogenous GA treatment to fruit stalks of Pyrus pyrifolia on fruit growth and gene expression. Application of GA during the full-flowering stage enhanced fruit growth and development and increased fruit weight. Transcriptome profiling of fruit cores taken at 12 and 28 days after treatment identified 769 and 1,469 differentially expressed genes after GA treatment, respectively. In addition, we conducted a comprehensive analysis of WOX family members in P. pyrifolia and clarified their potential roles in fruit growth and development; eight WOX genes showed a significant response to exogenous GA treatment. The overexpression of PyWOX3 in Arabidopsis revealed its positive regulatory role in fruit growth and development. In addition, SRR1, villin-1, DDX11, Hb2, LOB6, and KIN-5D were identified as proteins that potentially interact with PyWOX3. Thus, our results indicated the potential of PyWOX3 as a genetic target for improving pear fruit size and identified other target genes that regulate fruit size, potentially laying the foundation for utilizing genetic engineering and hormone therapy to manage fruit growth.