Evolutionary relationships of three new species of Enterobacteriaceae living as symbionts of aphids and other insects.

ABSTRACT: Ecological studies on three bacterial lineages symbiotic in aphids have shown that they impose a variety of effects on their hosts, including resistance to parasitoids and tolerance to heat stress. Phylogenetic analyses of partial sequences of gyrB and recA are consistent with previous analyses limited to 16S rRNA gene sequences and yield improved confidence of the evolutionary relationships of these symbionts. All three symbionts are in the Enterobacteriaceae. One of the symbionts, here given the provisional designation "Candidatus Serratia symbiotica," is a Serratia species that has acquired a symbiotic lifestyle. The other two symbionts, here designated "Candidatus Hamiltonella defensa" and "Candidatus Regiella insecticola," are sister groups to one another and together show a relations

SUBMITTER: Moran NA 

PROVIDER: S-EPMC1151865 | biostudies-literature | 2005 Jun

REPOSITORIES: biostudies-literature