Di-allate degradation by an EPTC-degrading Rhodococcus, and in EPTC-treated soil

A Rhodococcus soil isolate TEI. known to degrade EPTC. degraded di-allate [S(2.3-dichloroallyl) diisopropylthiocarbamate] but only in the presence of a cometabolite. More di-allate was degraded by TEI in basal salts medium supplemented with yeast extract or nutrient broth than with glucose or glycer...

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Bibliographic Details
Published in:Soil biology & biochemistry 1991, Vol.23 (8), p.789-793
Main Author: Behki, R.M.
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Biochemistry and biology
biodegradation
Biological and medical sciences
Chemical, physicochemical, biochemical and biological properties
diallate
EPTC (herbicide)
Fundamental and applied biological sciences. Psychology
Microbiology
mutants
Physics, chemistry, biochemistry and biology of agricultural and forest soils
Rhodococcus (bacteria)
soil bacteria
Soil science
triallate
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Summary:A Rhodococcus soil isolate TEI. known to degrade EPTC. degraded di-allate [S(2.3-dichloroallyl) diisopropylthiocarbamate] but only in the presence of a cometabolite. More di-allate was degraded by TEI in basal salts medium supplemented with yeast extract or nutrient broth than with glucose or glycerol. Also unlike EPTC. di-allate could not serve as the sole source of carbon for growth of the bacterium. The degradation products of di-allate may have an inhibitory effect on the continued growth of TEI. A mutant of TEI (TE3) lacking a plasmid associated with EPTC degradation was also unable to degrade di-allate. Similar results were found with tri-allate. Soils treated in the laboratory with EPTC contained an adapted microflora which could degrade di-allate. Di-allate adapted soils, however, did not show enhanced EPTC degradation.
ISSN:0038-0717
1879-3428
DOI:10.1016/0038-0717(91)90150-I