Properties of six pesticide degradation plasmids isolated from Alcaligenes paradoxus and Alcaligenes eutrophus.
Biophysical and genetic properties of six independently isolated plasmids encoding the degradation of the herbicides 2,4-dichlorophenoxyacetic acid and 4-chloro-2-methylphenoxyacetic acid are described. Four of the plasmids, pJP3, pJP4, pJP5, and pJP7, had molecular masses of 51 megadaltons, belonged to the IncP1 incompatibility group, and transferred freely to strains of Escherichia coli, Rhodopseudomonas sphaeroides, Rhizobium sp., Agrobacterium tumefaciens, Pseudomonas putida, Pseudomonas fluorescens, and Acinetobacter calcoaceticus. In addition, these four plasmids conferred resistance to merbromin, phenylmercury acetate, and mercuric ions, had almost identical restriction endonuclease cleavage patterns, and encoded degradation of m-chlorobenzoate. The two other plasmids, pJP2 and pJP9, did not belong to the IncP1 incompatibility group, had molecular masses of 37 megadaltons, encoded the degradation of phenoxyacetic acid, and possessed identical restriction endonuclease cleavage patterns.[1]References
- Properties of six pesticide degradation plasmids isolated from Alcaligenes paradoxus and Alcaligenes eutrophus. Don, R.H., Pemberton, J.M. J. Bacteriol. (1981) [Pubmed]
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