[Cometabolic degradation of the herbicide nitrofen by mixed bacterial cultures].
The herbicide nitrofen undergoes microbial degradation by mixed bacterial populations isolated from arable soil, and with a supply of acetate, within 4 to 5 weeks. The degradation proceeds endogenously after an ATP-dependent uptake of the agent followed by a temporary accumulation. This cometabolic degradation, however, shows two peculiarities, (a) the occurrence of a lag-phase and (b) the possible use of endogenous storage products. In the case of application of glucose as a substratum for growth the degradation is blocked in consequence of a catabolic enzyme reprisal. If there are used more complex organic substrates, i.e. peptone and algal biomass, respectively, the degradation is retarded compared with acetate.
Schmidt
W
W
Sektion Biologie, Friedrich-Schiller-Universität Jena.
Braune
W
W
D000085:Acetates / Q000378:metabolism; D000255:Adenosine Triphosphate / Q000378:metabolism; D001419:Bacteria / Q000378:metabolism*; D001673:Biodegradation, Environmental; D005947:Glucose / Q000378:metabolism; D006540:Herbicides / Q000378:metabolism*; D010647:Phenyl Ethers / Q000378:metabolism*
D000085:Acetates; D006540:Herbicides; D010647:Phenyl Ethers; D000255:Adenosine Triphosphate; D005947:Glucose; C007350:nitrofen
Untersuchungen zum cometabolischen Abbau des Herbizides Nitrofen durch Bakterienmischkulturen.