Effects of RGDV-Infected Transgenic cry1Ab Rice on the Populations of Nilaparvata lugens(Stål)

doi:10.16409/j.cnki.2095-039x.2022.09.001

Abstract

Abstract: The insect-resistant transgenic cry1Ab rice MF86 and its parental non-transgenic MH3301 rice were tested for the effects of Rice gall dwarf virus(RGDV)-infection of rice on the population of the non-target pest,Nilaparvata lugens (brown planthopper,BPH) under the climate chamber conditions using age-stage two sex life table.It was found that RGDV had no significant effect on the lifespan of BPH population feeding on MH3301,while increased its fecundity;in contrast,RGDV significantly shortened the life span of BPH population feeding on MF86 and reduced its fecundity.Compared with MH3301,healthy MF86 significantly prolonged the longevity and increased the fecundity of BPH population.However,compared with RGDV-infected MH3301,RGDV-infected MF86 significantly decreased the fecundity of BPH population.RGDV-infected MF86 significantly reduced the intrinsic rate of increase,finite rate of increase rate of BPH population,and significantly shortened the generation time;in comparison,RGDV-infected MH3301 had no significant effects on the dynamic parameters of BPH population.The results show that the RGDV-infected transgenic cry1Ab rice (MF86) harbor significantly negative effects on the population proliferation of BPH.

Key words: transgenic insect-resistant rice, rice planthopper, non-target insect, two-sex life table, biosafety

CLC Number:

S188

MIAO Xin, LIU Yuxiao, CHEN Wenle, GUO Qitang, YOU Shijun, LIN Sheng. Effects of RGDV-Infected Transgenic cry1Ab Rice on the Populations of Nilaparvata lugens(Stål)[J]. Chinese Journal of Biological Control, 2022, 38(5): 1055-1066.

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