Phylogenetic Characterization of Two Novel Commensal Bacteria Involved with Innate Immune Homeostasis in Drosophila melanogaster

Abstract

ABSTRACT During a previous study on the molecular interaction between commensal bacteria and host gut immunity, two novel bacterial strains, A911 T and G707 T , were isolated from the gut of Drosophila melanogaster . In this study, these strains were characterized in a polyphasic taxonomic study using phenotypic, genetic, and chemotaxonomic analyses. We show that the strains represent novel species in the family Acetobacteraceae . Strain G707 T , a highly pathogenic organism, represents a new species in the genus Gluconobacter , “ Gluconobacter morbifer ” sp. nov. (type strain G707 = KCTC 22116 T = JCM 15512 T ). Strain A911 T , dominantly present in the normal Drosphila gut community, represents a novel genus and species, designated “ Commensalibacter intestini ” gen. nov., sp. nov. (type strain A911 = KCTC 22117 T = JCM 15511 T ).