GoKawiilStudy identifies rice protein NVR1 that detects insect salivary signal 2′,3′-cNMP
Researchers studying rice and the stink bug Nezara viridula found that insect saliva deposited during feeding contains a small signalling molecule, 2′,3′-cNMP, produced by salivary effector proteins. They identified a plant RNA-binding protein, NVR1, that senses this molecule and used CRISPR knockouts and overexpression lines in rice and Nicotiana benthamiana, alongside related GRP7/GRP8 genes, to probe how plants detect insect attack at the molecular level.
GoKawiil's interpretation of the reporting above, not reported fact.
The finding points to a previously unrecognized chemical channel through which plants may perceive herbivore feeding, separate from known wound- or pattern-recognition pathways, which could broaden understanding of plant immune signalling. If confirmed to drive defense responses, NVR1 and related genes could become targets for breeding rice or other crops with improved resistance to piercing-sucking and leaf-feeding insects like stink bugs and leaffolders, though the research described here is largely mechanistic rather than applied.
- Insect saliva from Nezara viridula contains a signalling molecule, 2′,3′-cNMP, generated by salivary effectors.
- Rice protein NVR1 was identified as a sensor for this molecule, studied via CRISPR knockouts and overexpression in rice and tobacco.
- The work used multiple insect species (N. viridula and Cnaphalocrocis medinalis) and genetic tools to dissect plant perception of insect feeding.
Source: nature.com — Guo, 2026-11-11
Published there as: “A plant RNA-binding protein senses 2′,3′-cNMP produced by insect effectors”
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