Zero effect of Bt rice on expression of genes coding for digestion, detoxification and immune responses and developmental performances of Brown Planthopper Nilaparvata lugens (Stål)

Transgenic cry1C or cry2A rice has no adverse impacts on the life‐table parameters and population dynamics of the brown planthopper, Nilaparvata lugens (Hemiptera: Delphacidae)

“…The present laboratory results clearly showed that the development duration of each life stage (apart from fourth‐instar nymphs), the nymphal survival rate, female fecundity, and the egg hatching rate of BPH fed on Bt (T1C‐19 and T2A‐1) were not different from those on non‐ Bt rice (Table ). Similar findings were reported from previous studies with other Bt rice lines expressing Cry1A protein . Bernal et al showed that there were no significant differences in the nymphal survival rate, the whole development duration of nymphs and the dry weight of female and male adults of BPH reared on Cry1A rice by comparison with those in the control.…”

“…Fu et al found that transgenic cry1Ac / sck rice had no significant impact on the fitness parameters of BPH or the white‐backed planthopper Sogatella furcifera (Horváth) (Hemiptera: Delphacidae) in terms of the development duration of nymphs, the fresh weight of newly emerged adults, the emergence rate, the brachypterous rate, female fecundity, the rate at which eggs fertilised and the egg hatching rate. Mannakkara et al also showed that three Bt rice lines had no unfavorable effect on fecundity, survival and growth of BPH. However, negative and positive effects on non‐target herbivores by transgenic Bt rice were also documented .…”

Transgenic Bt rice lines producing Cry1Ac, Cry2Aa or Cry1Ca have no detrimental effects on Brown Planthopper and Pond Wolf Spider

“…Former publications on the effects of Bt rice on BPH address the survival, growth, oviposition behavior 19–23 , or field population dynamics of the insect 11, 23–25 . Our previous study has showed that Bt rice has no detrimental effects on the digestion, detoxification and immune responses of BPH 22 . In addition, Bt toxin was detected in the honeydew of BPH after being fed on transgenic Bt rice, but no effects on the fitness of the BPH or its predator Cyrtorhinus lividipennis were observed 26 .…”

Effects of Transgenic Rice Infected with SRBSDV on Bt expression and the Ecological Fitness of Non-vector Brown Planthopper Nilaparvata lugens

“…Similar results were obtained in this study, for BPH fed on T1C-19 infected with SRBSDV, exogenous Bt protein expression and SRBSDV infection did not significantly affect the ecological fitness of BPH, except that the developmental duration of females and the longevity of male BPH was significantly shortened in comparison with those of BPH being fed on healthy T1C-19 rice plants. Transgenic Cry1Ac, Cry2AA and Cry1Ca rice lines had no unfavorable effects on fecundity, survival, growth, and physiological processes of digestion, detoxification and immune responses of BPH 29 , Lu et al . 28 reported that the laboratory results showed the development duration of each life stage (apart from fourth-instar nymphs), nymphal survival rate, female fecundity, and the egg hatching rate of BPH being fed on Bt (T1C-19 and T2A-1) were not different from those on non-Bt rice MH63 30 .…”