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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
2
|
| pubmed:dateCreated |
1984-7-9
|
| pubmed:abstractText |
Detoxication of 2,4-dichlorophenoxyacetic acid (2,4-D) in samples of chernozem soil was determined by a biological test and the time course of production of 14CO2, a product of microbial degradation of 2-14C-2-4-D, was measured during 38-d incubation at 28 degrees C in the dark. Enrichment of the soil with glucose (1000 ppm), two exocellular bacterial glucan and glucomannan polysaccharides (750 ppm), or a mixture of glucose with (NH4)2SO4 (C : N = 5 : 1) brought about acceleration of both detoxication and mineralization of 2,4-D (50 ppm) added simultaneously with the saccharides. Mineralization of the saccharides always preceded the degradation of the herbicide. The lag phase of 2,4-D mineralization did not exceed 3 d. In samples with saccharides the doubling time of the mineralization activity in the exponential phase of the process was substantially shortened and the mineralization of 2,4-D was accelerated even when the soil was inoculated with a suspension of soil in which microbial 2,4-D decomposers had accumulated. The extent of mineralization was not affected by the presence of saccharides (about 1/3 of the introduced radioactive carbon was transformed into 14CO2). All saccharides had a similar effect which reflected an increase in the overall bacterial count and in the relative abundance of bacterial 2,4-D decomposers . The role of other mechanisms such as co-metabolism in the stimulation of the degradation process is discussed.
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:chemical | |
| pubmed:status |
MEDLINE
|
| pubmed:issn |
0015-5632
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
29
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
148-55
|
| pubmed:dateRevised |
2000-12-18
|
| pubmed:meshHeading | |
| pubmed:year |
1984
|
| pubmed:articleTitle |
Mineralization of 2,4-dichlorophenoxyacetic acid in soil simultaneously enriched with saccharides.
|
| pubmed:publicationType |
Journal Article
|