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. 1992 Sep;58(9):3067–3071. doi: 10.1128/aem.58.9.3067-3071.1992

Role of heterotrophic bacteria in complete mineralization of trichloroethylene by Methylocystis sp. strain M.

H Uchiyama 1, T Nakajima 1, O Yagi 1, T Nakahara 1
PMCID: PMC183049  PMID: 1444420

Abstract

Biodegradation experiments with radioactively labeled trichloroethylene showed that 32% of the radioactive carbon was converted to glyoxylic acid, dichloroacetic acid and trichloroacetic acid and that the same percentage was converted to CO2 and CO after 140 h of incubation by a pure culture of a type II methane-utilizing bacterium, Methylocystis sp. strain M, isolated from a mixed culture, MU-81, in our laboratory. In contrast, these water-soluble (14C)trichloroethylene degradation products were completely or partially degraded further and converted to CO2 by the MU-81 mixed culture. This phenomenon was attributed to the presence of a heterotrophic bacterium (strain DA4), which was identified as Xanthobacter autotrophicus, in the MU-81 culture. The results indicate that the heterotrophic bacteria play an important role in complete trichloroethylene degradation by methanotrophs.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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