Abstract
A bacterial strain S5-1capable of degrading chlorimuron-ethyl was isolated from paddy soil using enrichment technique. On the basis of traditional culture characteristics, colony and cell morphology, physiological and biochemical characteristics, type of internal photosynthetic membrane and combined with 16S rRNA gene sequence analysis, the strain was identified as aRhodopseudomonassp.. The optimal temperature and pH for biodegradation of chlorimuron-ethyl byRhodopseudomonassp. strain S5-1were 35°Cand pH 7.0, and the degradation rate reached 87.8% within 10 days under the optimal conditions. The results revealed that strain S5-1could degrade chlorimuron-ethyl efficiently and for further study it could potentially be used as a biological agent for the remediation of soil, water or crops, contaminated by chlorimuron-ethyl herbicide.
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