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<p>Arboviruses often employ various strategies to manipulate the behavior of herbivorous vectors and host plants, thereby enhancing their transmission and infection. In this study, we identify a plant lectin protein, OsChtBL1, which possesses chitin-binding activity and specifically accumulates on the stylets of insect vectors. This binding creates a&#xa0;feeding barrier that reduces the vectors’ efficiency in acquiring and transmitting the virus. However, the rice stripe virus, a devastating pathogen in rice, counteracts this defense by utilizing a viral protein to recruit an E3 ubiquitin ligase, leading to the degradation of OsChtBL1. This degradation facilitates vector feeding and enhances viral transmission. Our findings provide insights into how arbovirus-infected host plants improve the performance of herbivorous vectors and offer deeper understanding of the complex interactions among arboviruses, vectors, and host plants.</p>

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Arbovirus suppression of a lectin protein-mediated broad-spectrum resistance enhances herbivorous vector performance and viral transmission

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年7月25日

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  • Zihang Yang,
  • Wei Wu,
  • Zhongtian Xu,
  • Yanjun Li,
  • Hehong Zhang,
  • Lulu Li,
  • Jianping Chen,
  • Bingjian Sun,
  • Zongtao Sun

摘要

Arboviruses often employ various strategies to manipulate the behavior of herbivorous vectors and host plants, thereby enhancing their transmission and infection. In this study, we identify a plant lectin protein, OsChtBL1, which possesses chitin-binding activity and specifically accumulates on the stylets of insect vectors. This binding creates a feeding barrier that reduces the vectors’ efficiency in acquiring and transmitting the virus. However, the rice stripe virus, a devastating pathogen in rice, counteracts this defense by utilizing a viral protein to recruit an E3 ubiquitin ligase, leading to the degradation of OsChtBL1. This degradation facilitates vector feeding and enhances viral transmission. Our findings provide insights into how arbovirus-infected host plants improve the performance of herbivorous vectors and offer deeper understanding of the complex interactions among arboviruses, vectors, and host plants.