B. vietnamiensis strain G4 (R1808) is the best trichloroethene (TCE) co-oxidizing strain yet discovered (Fries et.al,, 1997). TCE and its sister chloroethenes are the most widespread hazardous environmental contaminants in groundwaters. Strain G-4 when grown on toluene or phenol produces an oxygenase that degrades TCE. This strain has been used in at a number of polluted sites to aid clean-up of ground water. Strain G-4 was isolated for its TCE oxidizing ability from an industrial waste treatment facility at Pensacola Naval Air Station, Florida (Nelson et. al., 1987). It has also been shown to be rhizosphere competent. Its genome size is estimated to be 8.5Mb. The B. vietnamiensis species is known for its rhizosphere colonizing ability, including on rice, and its ability to fix N2 gas. It is the third most frequent Bcc species isolated from Cystic Fibrosis patients. Besides its pollutant degrading ability, this strain was sequenced because well-characterized members of this species come from the CF lung, rice rhizosphere and soil, and hence offer the prospect for differentiating traits important to each habitat.
Strain equivalencies ATCC 53617 = G-4
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