The fungicide jinggangmycin stimulates fecundity of Nilaparvata lugens Stål via ILP/Foxo signaling.

The brown planthopper (BPH), Nilaparvata lugens is a typical pesticide-induced resurgent rice pest. A previous study showed that a fungicide, jinggangmycin (JGM)-treated rice led to markedly increased sugar content and (Insulin-like Peptide 2) ILP2 in response to sugar-mediated TOR signaling and stimulated fecundity in BPH. However, the role of the other ILPs in response to types of carbohydrate compounds remained poorly understood.

Jinggangmycin-induced NlPR-L and NlABD4-L genes regulate fecundity in the brown planthopper, Nilaparvata lugens (Stål) (Hemiptera: Delphacidae).

The brown planthopper (BPH), Nilaparvata lugens (Stål), is a typical insecticide-induced resurgence rice pest that causes severe damage to rice in Asian countries. Previous studies have shown that the fungicide Jinggangmycin (JGM), used to control rice sheath blight disease, can stimulate BPH fecundity; however, the molecular mechanism remains to be further explored. In this study, based on transcriptomic analysis, we found that the PI3K-Akt signaling pathway was significantly enriched in BPH after feeding on JGM-treated rice, where the NlPR-L and NlABD4-L genes were significantly upregulated.

The Jinggangmycin-induced Mthl2 gene regulates the development and stress resistance in Nilaparvata lugens Stål (Hemiptera: Delphacidae).

Methuselah (Mth) belongs to the GPCR family B, which regulates various biological processes and stress responses. The previous transcriptome data showed jinggangmycin (JGM)-induced Mthl2 expression. However, its detailed functional role remained unclear in brown planthopper, Nilaparvata lugens Stål.