Search

Your search keyword '"Jiang,Jian-dong"' showing total 9 results
Start Over Author "Jiang,Jian-dong" Journal current microbiology
9 results on '"Jiang,Jian-dong"'

7. Biodegradation of ethametsulfuron-methyl by Pseudomonas sp. SW4 isolated from contaminated soil

Author

Jiang Jian-dong, Shinawar Waseem Ali, Gu Li-feng, Li Xiaohui, and Li Shunpeng

Subjects
medicine.drug_class, Applied Microbiology and Biotechnology, Microbiology, Benzoates, Mass Spectrometry, Microscopy, Electron, Transmission, Pseudomonas, RNA, Ribosomal, 16S, medicine, Soil Pollutants, Phylogeny, Soil Microbiology, Chromatography, biology, Inoculation, Triazines, General Medicine, Biodegradation, biology.organism_classification, 16S ribosomal RNA, Sulfonylurea, Soil contamination, Biodegradation, Environmental, Soil microbiology, Bacteria, Chromatography, Liquid
Abstract

A soil bacterium SW4, capable of degrading the sulfonylurea herbicide ethametsulfuron-methyl (ESM), was isolated from the bottom soil of a herbicide factory. Based on physiological characteristics, biochemical tests and phylogenetic analysis of the 16S rRNA gene sequence, the strain was identified as a Pseudomonas sp. The total degradation of ESM in the medium containing glucose was up to 84.6% after 6 days of inoculation with SW4 strain. The inoculation of strain SW4 to soil treated with ESM resulted in a higher degradation rate than in noninoculated soil regardless of the soil sterilized or nonsterilized. Five metabolites of ESM degradation were analyzed by liquid chromatography/mass spectrometry. Based on the identified products, strain SW4 seemed to degrade ESM after two separate and different pathways: one leads to the cleavage of the sulfonylurea bridge, whereas the other to the dealkylation and opening of the triazine ring of ESM.

Published
2007

9. Biodegradation of Ethametsulfuron-Methyl by Pseudomonas sp. SW4 Isolated from Contaminated Soil.

Author

Gu Li-feng, Jiang Jian-dong, Li Xiao-hui, Ali, Shinawar Waseem, and Li Shun-peng

Subjects
*BACTERIA, *SOILS, *HERBICIDES, *SULFONYLUREAS, *RNA, *PSEUDOMONAS, *BIODEGRADATION, *LIQUID chromatography, *MASS spectrometry
Abstract

A soil bacterium SW4, capable of degrading the sulfonylurea herbicide ethametsulfuron-methyl (ESM), was isolated from the bottom soil of a herbicide factory. Based on physiological characteristics, biochemical tests and phylogenetic analysis of the 16S rRNA gene sequence, the strain was identified as a Pseudomonas sp. The total degradation of ESM in the medium containing glucose was up to 84.6% after 6 days of inoculation with SW4 strain. The inoculation of strain SW4 to soil treated with ESM resulted in a higher degradation rate than in noninoculated soil regardless of the soil sterilized or nonsterilized. Five metabolites of ESM degradation were analyzed by liquid chromatography/mass spectrometry. Based on the identified products, strain SW4 seemed to degrade ESM after two separate and different pathways: one leads to the cleavage of the sulfonylurea bridge, whereas the other to the dealkylation and opening of the triazine ring of ESM. [ABSTRACT FROM AUTHOR]

Published
2007
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results