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Cry1C rice doesn`t affect the ecological fitness of rice brown planthopper, Nilaparvata lugens either under RDV stress or not
Thursday, 2020/10/22 | 08:29:22

Xuefei ChangLinlin SunDuo NingCong Dang, Hongwei YaoQi FangYufa PengFang WangGongyin Ye.

Sci Rep. 2020 Oct 2;10 (1):16423. doi: 10.1038/s41598-020-73465-7.

Abstract

The potential risks of Bt rice on non-target arthropods (NTAs) should be evaluated and defined before commercial production. Recently, effects of Bt rice on NTAs under abiotic and biotic stress conditions attracted much attention. Here we reported the effects of Bt rice T1C-19 (Cry1C rice) on the non-target herbivore, Nilaparvata lugens (rice brown planthopper, BPH) with or without RDV (rice dwarf virus) infection conditions. BPH showed no feeding and oviposition preference between Bt rice T1C-19 and its non-Bt parental rice Minghui 63 (MH63), as well as between RDV-infected and RDV-free rice plants. Meanwhile, rice type, RDV infection status, and their interaction had little impacts on the survival, development and fecundity of BPH. By comparison with non-Bt control, Bt rice T1C-19 with or without RDV infection had no significant effects on the life-table parameters of BPH including rm, R0, T, DT and λ. Thus, it could be concluded that Bt rice T1C-19 doesn't affect the ecological fitness of BPH either under RDV stress or not.

 

See: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7532440/

Figure 3: The survivorship curves of N. lugens over a 20-day period when fed on MH63, MH63-RDV, T1C-19, T1C-19-RDV rice plants. n = 64 for each test.

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