Plant Cell EnvironJClub
Odorant-Binding Protein Can Mediate Flavones Perception in Rice Planthopper to Exacerbate the Damage Under Elevated CO(2).
Plant, Cell & Environment · · Journal Article
Duan, Xiao + more
Abstract ↗AI summary
The abstract is read at the publisher; the summary is JClub's.
Elevated CO2 increases six feeding-stimulating flavones in rice, and OBP7 in Nilaparvata lugens specifically binds these flavones to enhance feeding.
- Why it matters: Elevated CO2 is linked to worse brown planthopper damage to rice, but the mechanism connecting CO2-driven plant chemistry to insect feeding remained unclear.
- What they did: Targeted metabonomics identified enrichment in “flavone and flavonol biosynthesis” under eCO2, and OBP7 knockdown plus fluorescence binding, docking, and mutagenesis tested OBP7–flavone interactions.
- The result: Benzoylpaeoniflorin competitively inhibits OBP7–flavone binding, suppressing feeding and inducing oxidative stress in Nilaparvata lugens, and exogenous application mitigated eCO2-linked aggravating damage to rice.
The findingWhy it mattersWhat they didThe result
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