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<p>Plants have evolved intricate mechanisms to adapt to tissue damage from environmental and biological factors, enhancing survival strategies. However, the link and mechanisms between wounding and dormancy traits remain unclear. Here we discovered that wounding dramatically accelerates bud-growth transition (BGT) in gladiolus and other horticultural geophytes, including <i>Allium sativum</i> and <i>Allium cepa</i>. Wounding induced jasmonic acid (JA) accumulation in gladiolus corms, promoting sucrose transport to dormant buds via the apoplastic pathway, supplying energy for cell division and facilitating BGT. Furthermore, we characterized a zinc finger transcription factor, ZINC FINGER OF ARABIDOPSIS THALIANA 11 (GhZAT11), responsive to both wounding and JA. GhZAT11 directly upregulated <i>SUCROSE TRANSPORTER4</i> (<i>GhSUT4</i>) and <i>CYCLIN D2;1</i> (<i>GhCYCD2;1</i>), enhancing sucrose transport and cell division in the shoot apical meristem. In addition, <i>ZAT11</i>, <i>SUT4</i> and <i>CYCD2;1</i> can act as markers for wound-induced BGT in geophytes. Our findings reveal that injuries trigger BGT via JA-regulated sucrose transport and cell division, offering novel insights into JA’s role in wound-induced responses.</p>

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GhZAT11 triggers wound-activated bud growth by accelerating sugar transport and cell division

  • 期刊论文

  • 发表日期：

    2026年1月12日

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  • Jingru Li,
  • Chang Liu,
  • Jingwei Wei,
  • Dong Jing,
  • Junwei Tang,
  • Yajie Zhao,
  • Li Cao,
  • Lin Wu,
  • Chenglong Yang,
  • Shaozhong Fang,
  • Lianwei Qu,
  • Yingdong Yang,
  • Tibor Janda,
  • Mingfang Yi,
  • Jian Wu

摘要

Plants have evolved intricate mechanisms to adapt to tissue damage from environmental and biological factors, enhancing survival strategies. However, the link and mechanisms between wounding and dormancy traits remain unclear. Here we discovered that wounding dramatically accelerates bud-growth transition (BGT) in gladiolus and other horticultural geophytes, including Allium sativum and Allium cepa. Wounding induced jasmonic acid (JA) accumulation in gladiolus corms, promoting sucrose transport to dormant buds via the apoplastic pathway, supplying energy for cell division and facilitating BGT. Furthermore, we characterized a zinc finger transcription factor, ZINC FINGER OF ARABIDOPSIS THALIANA 11 (GhZAT11), responsive to both wounding and JA. GhZAT11 directly upregulated SUCROSE TRANSPORTER4 (GhSUT4) and CYCLIN D2;1 (GhCYCD2;1), enhancing sucrose transport and cell division in the shoot apical meristem. In addition, ZAT11, SUT4 and CYCD2;1 can act as markers for wound-induced BGT in geophytes. Our findings reveal that injuries trigger BGT via JA-regulated sucrose transport and cell division, offering novel insights into JA’s role in wound-induced responses.