Kinetic comparison of seven strains of 2,4-dichlorophenoxyacetic acid-degrading bacteria
نویسندگان
چکیده
منابع مشابه
2,4-Dichlorophenoxyacetic acid-degrading bacteria contain mosaics of catabolic genes.
DNA from 32 2,4-dichlorophenoxyacetic acid (2,4-D)-degrading bacteria from diverse locations was probed with the first three genes of the well-known 2,4-D degradation pathway found in Alcaligenes eutrophus JMP134(pJP4). The majority of strains did not show high levels of homology to the first three genes of the 2,4-D degradation pathway, tfdA, -B, and -C. Most strains showed combinations of tfd...
متن کاملAnalysis of competition in soil among 2,4-dichlorophenoxyacetic acid-degrading bacteria.
Competition among indigenous and inoculated 2,4-dichlorophenoxyacetic acid (2,4-D)-degrading bacteria was studied in a native Kansas prairie soil following 2,4-D additions. The soil was inoculated with four different 2,4-D-degrading strains at densities of 10(3) cells per g of soil; the organisms used were Pseudomonas cepacia DBO1(pJP4) and three Michigan soil isolates, strain 745, Sphingomonas...
متن کاملPartial Purification and Characterization of 2,4- Dichlorophenoxyacetic Acid Degrading Bacteria Harboring Alpha Ketoglutarate Dioxgenase Enzyme
The catabolic adaptability demonstrated by microorganisms is important in the bioremediation of polluted environments. 2,4-dichlorophenoxyacetic acid/α-ketoglutarate dioxygenase is the first enzyme in the catabolic pathway for the 2,4dichlorophenoxyacetic acid (2,4-D). In the present study, dioxygenase enzymes were inducible and the serial adaptation of four studied bacterial isolates steadily ...
متن کاملKinetic modeling of bioavailability for sorbed-phase 2,4-dichlorophenoxyacetic acid.
The degradation rate of 2,4-dichlorophenoxyacetic acid (2,4-D) was studied in silica-slurry systems to evaluate the bioavailability of sorbed-phase contaminant. After the silica particles were saturated with 2,4-D, the system was inoculated with the 2,4-D-degrading microorganism Flavorbacterium sp. strain FB4. The disappearance rate of 2,4-D was found to be greater than the rate predicted based...
متن کاملcomparison of catalytic activity of heteropoly compounds in the synthesis of bis(indolyl)alkanes.
heteropoly acids (hpa) and their salts have advantages as catalysts which make them both economically and environmentally attractive, strong br?nsted acidity, exhibiting fast reversible multi-electron redox transformations under rather mild conditions, very high solubility in polar solvents, fairly high thermal stability in the solid states, and efficient oxidizing ability, so that they are imp...
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ژورنال
عنوان ژورنال: Applied and Environmental Microbiology
سال: 1992
ISSN: 0099-2240,1098-5336
DOI: 10.1128/aem.58.3.1027-1030.1992