Linked Life Data

6427074

Source:http://linkedlifedata.com/resource/pubmed/id/6427074

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1984-7-9
pubmed:abstractText
Samples of chernozem soil were enriched with vanillic acid, protocatechuic acid glucose, a mixture of glucose and (NH4)2SO4 (C : N = 5 : 1), ethanol and 2,4-dichlorophenoxyacetic acid (2,4-D). After a 6-d (with 2,4-D 35-d) incubation during which primary oxidation of the introduced substrates occurred, the soil was supplied with a solution of 2-14C-2,4-D (50 ppm; 6.7 kBq) and production of 14CO2 (product of microbial degradation of 2,4-D) was measured. Previously enriched samples exhibited a higher degradation rate; both the lag phase and doubling time of mineralization activity in the exponential phase of the process were markedly higher. This reflected an overall proliferation of bacteria and the increased relative proportion of bacterial strains capable of mineralizing 2,4-D in enriched samples. The stimulation of 2,4-D degradation may involve specific adaptation and selection mechanisms (as in the case with samples previously enriched with 2,4-D or its structural analogues--aromatic monomers, ethanol) as well as non-specific mechanisms. The extent of mineralization of 2,4-D was not affected by soil pretreatment, about 1/3 of introduced radioactive carbon being invariably transformed to 14CO2.
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
156-61
pubmed:dateRevised
2000-12-18
pubmed:meshHeading
pubmed:year
1984
pubmed:articleTitle
Mineralization of 2,4-dichlorophenoxyacetic acid in soil previously enriched with organic substrates.
pubmed:publicationType
Journal Article