Microbial decomposition of 2, 4-dichlorophenoxyacetic acid.

Bacterial decomposition of 2, 4-dichlorophenoxyacetic acid.

In situ exposure to low herbicide concentrations affects microbial population composition and catabolic gene frequency in an aerobic shallow aquifer.

The aim of this study was to evaluate how the in situ exposure of a Danish subsurface aquifer to phenoxy acid herbicides at low concentrations (<40 micro g l(-1)) changes the microbial community composition. Sediment and groundwater samples were collected inside and outside the herbicide-exposed area and were analyzed for the presence of general microbial populations, Pseudomonas bacteria, and ...

Metabolism of Phenoxyalkyl Carboxylic Acids by a Flavobacterium Species.

Macrae, I. C. (Cornell University, Ithaca, N.Y.), and M. Alexander. Metabolism of phenoxyalkyl carboxylic acids by a Flavobacterium species. J. Bacteriol. 86:1231-1235. 1963.-A Flavobacterium sp. isolated from soil and grown in media containing 4-(2,4-dichlorophenoxy) butyric acid metabolized omega-linked 2,4-dichlorophenoxyalkyl carboxylic acids in the series from 3-(2,4-dichlorophenoxy)propio...

Adaptation of natural microbial communities to degradation of xenobiotic compounds: effects of concentration, exposure time, inoculum, and chemical structure.

Adaptation of microbial communities to faster degradation of xenobiotic compounds after exposure to the compound was studied in ecocores. Radiolabeled test compounds were added to cores that contained natural water and sediment. Adaptation was detected by comparing mineralization rates or disappearance of a parent compound in preexposed and unexposed cores. Microbial communities in preexposed c...

2, 4-D Dichlorophenoxyacetic Acid Poisoning; Case Report and Literature Review

Background: 2, 4-dichlorophenoxyacetic acid, (2, 4-D) is a selective herbicide available as the acids, esters and several salts which vary in their chemical properties, environmental behaviour, and to a lesser extent toxicity. The salt and ester forms are derivatives of the parent acid. It is widely used as a weed killer. The 2, 4-D dimethylamine is one of the salts of this group. Case Presenta...

Evidence for Acquisition in Nature of a Chromosomal 2,4-Dichlorophenoxyacetic Acid/a-Ketoglutarate Dioxygenase Gene by Different Burkholderia spp

Evidence for Acquisition in Nature of a Chromosomal 2,4-Dichlorophenoxyacetic Acid/a-Ketoglutarate Dioxygenase Gene by Different Burkholderia spp. V. GRACE MATHESON, LARRY J. FORNEY,* YUICHI SUWA,† CINDY H. NAKATSU,‡ ALAN J. SEXSTONE, AND WILLIAM E. HOLBEN§ Department of Plant Pathology and Environmental Microbiology, West Virginia University, Morgantown, West Virginia 26506, and Center for Mic...