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Biodegradation of sulfosulphuron in agricultural soil by Trichoderma sp
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View Archive Info| Field | Value | |
| Title |
Biodegradation of sulfosulphuron in agricultural soil by Trichoderma sp
Not Available |
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| Creator |
U. Yadav and P.P. Choudhury
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| Subject |
biodegradation, bioremediation, sulfonylurea herbicide, sulfosulphuron, Trichoderma sp.
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| Description |
Not Available
Sulfosulphuron-degrading fungus was isolated by enrichment technique from the sulfosulphuron-contaminated soil of wheat rhizosphere. To assess the biodegradation potential of isolated Trichoderma sp., minimal potato dextrose agar broth with different levels of sulfosulphuron (up to 2 g l 1) was evaluated in the growth and biotransformation experiments. ESI LC-MS/MS analysis revealed the presence of degradation products 2-amino-4,6-dimethoxypyrimidine (I) and 2-ethylsulfonyl imidazo(1,2-a) pyridine-3- sulfonamide-2-ethylsulfonyl imidazo(1,2-a) pyridine-3-sulfonamide (II) indicating the cleavage of the urea bridge and the presence of the by-product N- (4,6-dimethoxypyrimidin-2-yl)urea (III) indicating the degradation of sulfonylamide linkage. Two other metabolites, N-(4,6-dimethoxypyrimidin-2- yl)-N’-hydroxyurea (IV) and N, N’-bis(4,6-dimethoxypyrimidin-2-yl)urea (V), were also identified. From the previous reports, it was found that the degradation of sulfonyl urea herbicides took place through the chemical degradation of the sulfonylurea bridge followed by microbial degradation. During this investigation, Trichoderma sp. grew well with and degraded sulfosulphuron via both the decarboxylation on the sulphonyl urea bridge and the hydrolytic cleavage of the sulfonylamide linkage as demonstrated by the formation of metabolites. Trichoderma is nonphytopathogenic in nature, and some species of it restrict the growth of soil-dwelling phytopathogens. Therefore, it is a promising candidate for the decontamination of soil from sulfosulphuron residues. Not Available |
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| Date |
2019-03-20T06:36:46Z
2019-03-20T06:36:46Z 2014-07-04 |
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| Type |
Research Paper
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| Identifier |
2
Not Available http://krishi.icar.gov.in/jspui/handle/123456789/17537 |
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| Language |
English
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| Relation |
Not Available;
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| Publisher |
The Society of Applied Microbiology
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