[Degradation of the herbicide dicamba under strictly anaerobic conditions].
Degradation of the herbicide dicamba was assayed under methane-producing condition using a coastal wetland soil as an inoculum. Benzene ring 14C labeled dicamba was employed and degradative process proceeds through demethoxylation yielding 3,6-dichlorosalicylic acid as the predominant intermediate. The data showed that the degradation rate of dicamba by the enrichment culture achieved 64%, 91% and 95% after 7, 16 and 27 days of incubation, respectively; only small quantities of CO2(0.74%) and CH4(0.11%) were recovered with insignificant radioactivity. The benzene ring of dicamba was not cleavaged to a significant extent. Future cleaning up of dicamba contaminated environment may require an effective bioremediation techniques.
Gu
J
J
Laboratory of Environmental Toxicology, Department of Ecology & Biodiversity, University of Hong Kong, Hong Kong, China.
Cheng
S
S
Gu
J
J
D000693:Anaerobiosis; D001673:Biodegradation, Environmental; D002245:Carbon Dioxide / Q000378:metabolism; D003996:Dicamba / Q000378:metabolism*; D006540:Herbicides / Q000378:metabolism*; D008697:Methane / Q000378:metabolism
D006540:Herbicides; D002245:Carbon Dioxide; D008697:Methane; D003996:Dicamba