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<p>The sustainability of global agricultural systems, a cornerstone for both economic security and food supply chains, is increasingly compromised by phytopathogen invasions. Herein, we characterize RP151—a novel biopesticide engineered through rational concatenation of plant immunity-stimulating peptides. This recombinant protein demonstrates exceptional bioavailability in Solanaceous crops like tobacco and tomato, inducing multifaceted defense responses within 24&#xa0;h post-application, as evidenced by ROS burst, MAPK cascade activation, and localized callose deposition. Mechanistic studies reveal that RP151-mediated resistance against TMV and its co-infection with CMV primarily operates through SA-dependent signaling. ‌In comparative trials, RP151 significantly prolonged SAR duration and effectively suppressed lesion expansion in TMV-challenged plants relative to conventional antiviral agents. Notably, the broad-spectrum efficacy of RP151 was further validated against necrotrophic fungi (<i>Botrytis cinerea</i>) in tomato. RP151’s deployment could lead to a substantial reduction in the use of harmful pesticides, offering a sustainable, safe solution for enhancing plant defense against a variety of pathogens.</p>

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The engineered Immunoprotein enhance broad-spectrum disease resistance in solanaceous crops

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年2月6日

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  • Yan Huang,
  • Li Li,
  • Lijing Wei,
  • Xuemei Yang,
  • Shuangyan Zeng,
  • Ting Zhang,
  • Yong Li,
  • Xinlan Shen,
  • Zhouqing He,
  • Jiuer Liu,
  • Jinbo Shen,
  • Yi Cai

摘要

The sustainability of global agricultural systems, a cornerstone for both economic security and food supply chains, is increasingly compromised by phytopathogen invasions. Herein, we characterize RP151—a novel biopesticide engineered through rational concatenation of plant immunity-stimulating peptides. This recombinant protein demonstrates exceptional bioavailability in Solanaceous crops like tobacco and tomato, inducing multifaceted defense responses within 24 h post-application, as evidenced by ROS burst, MAPK cascade activation, and localized callose deposition. Mechanistic studies reveal that RP151-mediated resistance against TMV and its co-infection with CMV primarily operates through SA-dependent signaling. ‌In comparative trials, RP151 significantly prolonged SAR duration and effectively suppressed lesion expansion in TMV-challenged plants relative to conventional antiviral agents. Notably, the broad-spectrum efficacy of RP151 was further validated against necrotrophic fungi (Botrytis cinerea) in tomato. RP151’s deployment could lead to a substantial reduction in the use of harmful pesticides, offering a sustainable, safe solution for enhancing plant defense against a variety of pathogens.