Effect of the Secondary Symbiont Hamiltonella defensa on Fitness and Relative Abundance of Buchnera aphidicola of Wheat Aphid, Sitobion miscanthi.

ABSTRACT: Bacterial symbionts associated with insects are often involved in host development and ecological fitness. In aphids, the role of these symbionts is variable and not fully understood across different host species. Here, we investigated the symbiont diversity of the grain aphid, Sitobion miscanthi (Takahashi), from 17 different geographical areas. Of these, two strains with the same symbiont profile, except for the presence of Hamiltonella defensa, were selected using PCR. The Hamiltonella-infected strain, YX, was collected from a Yuxi wheat field in Yunnan Province, China. The Hamiltonella-free strain, DZ, was collected from a Dezhou wheat field in Shandong Province, China. Using artificial infection with H. defensa and antibiotic treatment, a Hamiltonella-re-infected strain (DZ-H) and Ham

SUBMITTER: Qian L 

PROVIDER: S-EPMC5884939 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature