Статья

Arabidopsis perceives caterpillar oral secretion to increase resistance by reactive oxygen species‐enhanced glucosinolate hydrolysis

Xueying ChenInstitute of Translational Medicine Shanghai Jiao Tong University Shanghai 200241 ChinaMan‐Ni WuNational Key Laboratory of Plant Design, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology Chinese Academy of Sciences Shanghai 200032 ChinaQiu‐Yi ChenNational Key Laboratory of Plant Design, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology Chinese Academy of Sciences Shanghai 200032 ChinaPai LiNational Key Laboratory of Plant Design, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology Chinese Academy of Sciences Shanghai 200032 ChinaMu‐Yang WangNational Key Laboratory of Plant Design, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology Chinese Academy of Sciences Shanghai 200032 ChinaJiancai LiNational Key Laboratory of Plant Design, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology Chinese Academy of Sciences Shanghai 200032 ChinaXiu‐Fang XinNational Key Laboratory of Plant Design, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology Chinese Academy of Sciences Shanghai 200032 ChinaYing‐Bo MaoNational Key Laboratory of Plant Design, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology Chinese Academy of Sciences Shanghai 200032 China

2025en

ABI

Аннотация

Summary In Arabidopsis, the outbreaks of reactive oxygen species (ROS) occur upon pathogen recognition by pattern‐ and effector‐triggered immunity (PTI and ETI, respectively), which plays a significant role in disease resistance. Here, we found that Arabidopsis also experiences two outbreaks of ROS (oral secretion (OS)‐induced ROS (ROS OS )) upon the perception of OS from cotton bollworm ( Helicoverpa armigera ) and other lepidopterans. Oral secretion‐induced ROS burst requires the PTI machinery, including BRI1‐ASSOCIATED RECEPTOR KINASE1 (BAK1) and BOTRYTIS‐INDUCED KINASE1 (BIK1). Oral secretion‐induced ROS are primarily produced by respiratory burst oxidase homologue D (RBOHD) in the apoplast, and the double mutant, rbohdf, exhibits reduced resistance to lepidopterans. Insect biting rather than wounding induces the gene expressions of plant defense‐associated respiratory burst and toxin catabolic processes, facilitating the breakdown of leaf glucosinolates into bioactive intermediates, like sulforaphane, thereby impeding insect herbivory. Our investigation demonstrates that Arabidopsis perceives insect OS in a BAK1‐BIK1‐dependent manner and employs RBOHD to produce ROS in the apoplast, thereby enhancing its insect resistance by accelerating glucosinolate hydrolysis.

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Идентификаторы

DOI: 10.1111/nph.70014

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