We have earlier reported chemotaxis of a Gram-negative, motile Ralstonia sp. SJ98 towards p-nitrophenol (PNP), 4-nitrocatechol (NC), o-nitrobenzoate (ONB), p-nitrobenzoate (PNB), and 3-methyl-4-nitrophenol (MNP) that also served as sole source of carbon and energy to the strain [S.K. Samanta, B. Bhushan, A. Chauhan, R.K. Jain, Biochem. Biophy. Res. Commun. 269 (2000) 117; B. Bhushan, S.K. Samanta, A. Chauhan, A.K. Chakraborti, R.K. Jain, Biochem. Biophy. Res. Commun. 275 (2000) 129]. In this paper, we report chemotaxis of a Ralstonia sp. SJ98 toward seven different nitroaromatic compounds (NACs) by drop assay, swarm plate assay, and capillary assay. These NACs do not serve as sole carbon and energy source to strain SJ98 but are partially transformed in the presence of an alternate carbon source such as succinate. This is the first report showing chemotaxis of a bacterial strain toward co-metabolizable NACs.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/s0006-291x(02)02601-3 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Chemotaxis of Ralstonia sp. SJ98 towards p-nitrophenol in soil.
Environ Microbiol
October 2006
Institute of Microbial Technology, Sector 39A, Chandigarh-160036, India.
Bioremediation of contaminated sites has been accepted as an efficient and cheaper alternative to physicochemical means of remediation in several cases. Although chemotactic behaviour of many bacteria has been studied earlier and assays have been developed to study bacterial chemotaxis in semi-solid media, this phenomenon has never been demonstrated in soil. For bioremediation application it is important to know whether bacteria actually migrate through the heterogenous soil medium towards a gradient of a particular chemoattractant.
View Article and Find Full Text PDFChemotaxis of a Ralstonia sp. SJ98 toward co-metabolizable nitroaromatic compounds.
Biochem Biophys Res Commun
December 2002
Institute of Microbial Technology, Sector 39-A, 160036, Chandigarh, India.
We have earlier reported chemotaxis of a Gram-negative, motile Ralstonia sp. SJ98 towards p-nitrophenol (PNP), 4-nitrocatechol (NC), o-nitrobenzoate (ONB), p-nitrobenzoate (PNB), and 3-methyl-4-nitrophenol (MNP) that also served as sole source of carbon and energy to the strain [S.K.
View Article and Find Full Text PDFChemotaxis and biodegradation of 3-methyl- 4-nitrophenol by Ralstonia sp. SJ98.
Biochem Biophys Res Commun
August 2000
Institute of Microbial Technology, Sector-39A, Chandigarh, 160036, India.
3-Methyl-4-nitrophenol is one of the major breakdown products of fenitrothion [O,O-dimethyl O-(3-methyl-4-nitrophenyl) thiophosphate], a recalcitrant organophosphate insecticide used in agriculture. Being the non-polar methylated aromatic compound, 3-methyl-4-nitrophenol is highly toxic and, therefore, a complete degradation of this compound is important for environmental decontamination/bioremediation purposes. A gram negative, motile Ralstonia sp.
View Article and Find Full Text PDFKinetics of biodegradation of p-nitrophenol by different bacteria.
Biochem Biophys Res Commun
August 2000
Institute of Microbial Technology, Sector 39A, Chandigarh, 160036, India.
Three bacterial species, i.e., Ralstonia sp.
View Article and Find Full Text PDFChemotaxis of a Ralstonia sp. SJ98 toward different nitroaromatic compounds and their degradation.
Biochem Biophys Res Commun
March 2000
Environmental Biotechnology Laboratory, Institute of Microbial Technology, Sector-39A, Chandigarh, 160036, India.
A Ralstonia sp. SJ98, isolated by a chemotactic enrichment technique, was capable of utilizing different nitroaromatic compounds (NACs). It utilized p-nitrophenol, 4-nitrocatechol, o-nitrobenzoic acid, and p-nitrobenzoic acid as the sole source of carbon and energy.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!