Three of the seven bphC genes of Rhodococcus erythropolis TA421 isolated from a termite ecosystem, are located on an indigenous plasmid associated with biphenyl degradation

Article Abstract:

A new mutant obtained from Rhodococcus erythropolis TA421 has genes bphC2, bphC3 and bphC4 that are located on the plasmid responsible for biphenyl biodegradation. A similar set of genes exist in Rhodococcus globerus P6 and are located on plasmids that are also responsible for biphenyl reduction. R. erythropolis TA421 is a gram-positive aerobic bacterium that can reduce polychlorinated biphenyls by using it as a carbon source.

Genetic aspects, Polychlorinated biphenyls, Bacterial genetics, Bacteria, Aerobic, Aerobic bacteria

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Influence of surfactants on pyrene desorption and degradation in soils

Article Abstract:

The addition of surfactants and bacteria capable of degrading pyrene increases the mineralization of pyrene in soil under unsaturated conditions. Witconol SN70 is the most effective surfactant in desorbing pyrene. There is no mineralization of pyrene in soil slurries innoculated with bacteria and surfactants. This suggests that the surfactants have an inhibitory effect on the inoculants in soil slurries.

Observations, Surface active agents

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