Microbial metabolism of propanil and 3,4-dichloroaniline |
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Authors: | J. Zeyer P.C. Kearney |
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Affiliation: | Pesticide Degradation Laboratory, Agricultural Environmental Quality Institute, U.S. Department of Agriculture, Beltsville, Maryland 20705 USA |
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Abstract: | A Pseudomonas sp. which grew on 4-chloroaniline as a sole source of carbon and nitrogen was able to degrade 15% of 0.05 mM [14C]3,4-dichloroaniline to 14CO2 within 10 days in presence of 1.5 mM 4-chloroaniline. The catabolic enzymes which degraded 3,4-dichloroaniline to CO2 were inducible by 4-chloroaniline and by 3,4-dichloroaniline. However, their activity was much lower on 3,4-dichloroaniline than on 4-chloroaniline. The strain showed no significant growth on 3,4-dichloroaniline as a sole source of carbon and nitrogen. Soils supplemented with [ring-14C]propanil and the Pseudomonas sp. evolved 25–50% 14CO2 within 5 days. The 14CO2 evolution remained below 1% in absence of the Pseudomonas sp. |
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