Current Microbiology

, Volume 75, Issue 6, pp 709–715 | Cite as

Variations in Endosymbiont Infection Between Buprofezin-Resistant and Susceptible Strains of Laodelphax striatellus (Fallén)

  • Yongteng Li
  • Xiangdong Liu
  • Huifang Guo


The endosymbionts Wolbachia and Rickettsia have been shown to be correlated with the insecticide resistance of mosquito and whitefly. The small brown planthopper (SBPH), Laodelphax striatellus, harbours many species of endosymbionts, and has developed a high resistance to buprofezin in China. In this study, we examined the species and the infection incidences of endosymbionts in a buprofezin-resistant (BR) strain, a buprofezin-susceptible (BS) strain, and the BR strain after exposure to buprofezin, and we also investigated the change in buprofezin susceptibility after removal of Wolbachia from the BR strain. The results showed that Wolbachia infection incidences were 100% in both the BR and BS strains, but the Wolbachia density in the BR strain was significantly higher than that in the BS strain. There were no significant differences in Arsenophonus infection incidence between the two strains. However, the infection incidence of Serratia and double infection incidence of Serratia + Wolbachia in the BR strain were significantly higher than that in the BS strain. After the BR strain was exposed to 1200 mg/L buprofezin, the infection incidence of Arsenophonus in the surviving individuals increased, and the infection rate of Serratia did not differ, but the double infection incidence of Serratia + Wolbachia decreased. And when a Wolbachia-infected line originating from the BR strain was cleared of Wolbachia, its susceptibility to buprofezin increased. The results suggest that Serratia and Wolbachia infection might improve the buprofezin resistance of SBPH.



This research was supported by Grants from the National Natural Science Foundation of China (31672027) and the Independent Innovation Fund of Agricultural Science and Technology in Jiangsu province, China (cx(16)1001).

Supplementary material

284_2018_1436_MOESM1_ESM.doc (62 kb)
Supplementary material 1 (DOC 62 KB)


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Authors and Affiliations

  1. 1.Department of Entomology, College of Plant ProtectionNanjing Agricultural UniversityNanjingChina
  2. 2.Institute of Plant ProtectionJiangsu Academy of Agricultural SciencesNanjingChina

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