Query: NC_009256:3601080 Burkholderia vietnamiensis G4 chromosome 1, complete sequence
Lineage: Burkholderia vietnamiensis; Burkholderia; Burkholderiaceae; Burkholderiales; Proteobacteria; Bacteria
General Information: B. vietnamiensis strain G4 (formerly B.cepacia strain R1808) is the best trichloroethene (TCE) co-oxidizing strain yet discovered, having been isolated from an industrial waste treatment facility at Pensacola Naval Air Station, Florida, U.S.A. Burkholderia vietnamiensis is a member of the Burkholderia cepacia complex which contains a number of closely related Burkholderia species. Burkholderia vietnamiensis is commonly isolated from soil and water and has been studied as a plant growth promoting bacterium and as a bioremediation agent for aromatic hydrocarbons such as benzene and tolulene.
Subject: NC_004545:15650 Buchnera aphidicola str. Bp (Baizongia pistaciae), complete genome
Lineage: Buchnera aphidicola; Buchnera; Enterobacteriaceae; Enterobacteriales; Proteobacteria; Bacteria
General Information: This organism is found in the aphid Baizongia pistaciae. Aphid endosymbiont. It is believed that the Buchnera provide the essential nutrients the host lacks. Besides a nutritional co-dependence, due to a co-existence of millions of years, Buchnera have lost the ability to produce cell surface components such as lipopolysaccharides. This makes for an obligate endosymbiont relationship between host and Buchnera. Buchnera are prokaryotic cells which belong to the gamma-Proteobacteria, closely related to the Enterobacteriaceae family. Phylogenetic studies using 16S rRNA indicate that the symbiotic relationship was established around 200-250 million years ago. Since Buchnera are closely related to Escherichia coli and Haemophilus influenzae, comparative genomic studies can shed light on the evolutionary mechanisms of intracellular endosymbiosis as well as the different underlying molecular basis between organisms with parasitic behavior and symbionts.