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Biochemistry of Microbial Degradation of Hexachlorocyclohexane and Prospects for Bioremediation
It is important to develop a better understanding of the biochemistries of the LinA and LinB variants and to use that knowledge to build better variants, because field trials of some bioremediation strategies based on the Lin pathway have yielded promising results but would not yet achieve economic levels of remediation.
Hexachlorocyclohexane (HCH) as new Stockholm Convention POPs—a global perspective on the management of Lindane and its waste isomers
The paper highlights the environmental relevance of deposited HCH wastes and the related POPs’ contaminated sites and provides suggestions for further steps to address the challenge of the legacy of HCH/Lindane production.
Organization of lin Genes and IS6100 among Different Strains of Hexachlorocyclohexane-Degrading Sphingomonas paucimobilis: Evidence for Horizontal Gene Transfer
DNA-DNA hybridization data revealed that most of the lin genes in these strains were associated with IS6100, an insertion sequence classified in the IS6 family and initially found in Mycobacterium fortuitum, which strongly suggests that all these strains acquired the linA gene through horizontal gene transfer mediated by IS6 100.
Cloning and Characterization of lin Genes Responsible for the Degradation of Hexachlorocyclohexane Isomers by Sphingomonas paucimobilis Strain B90
The cloning and characterization of the halidohydrolase, dehydrogenase, and reductive dechlorinase genes from S. paucimobilis B90 revealed that they share ∼96 to 99% identical nucleotides with the corresponding genes of S. PaucIMobilis UT26, suggesting that S.paucimobiles B90 contains another pathway for the initial steps of β-HCH degradation.
Diversity, distribution and divergence of lin genes in hexachlorocyclohexane-degrading sphingomonads.
The enzymatic basis for pesticide bioremediation
This review describes examples of enzymes possessing the major activities employed in the bioremediation of pesticide residues, and some of the strategies by which they are employed.
Residues of hexachlorocyclohexane isomers in soil and water samples from Delhi and adjoining areas
The contamination of mineral water could be due to heavy contamination of groundwater, which is used for making mineral water.
Rhizobium rosettiformans sp. nov., isolated from a hexachlorocyclohexane dump site, and reclassification of Blastobacter aggregatus Hirsch and Muller 1986 as Rhizobium aggregatum comb. nov.
- Jaspreet Kaur, M. Verma, R. Lal
- Biology, EngineeringInternational Journal of Systematic and…
- 1 May 2011
Based on the results obtained by phylogenetic and chemotaxonomic analyses, phenotypic characterization and DNA-DNA hybridization, it is concluded that strain W3(T) represents a novel species of the genus Rhizobium.
Accumulation, metabolism, and effects of organochlorine insecticides on microorganisms.
Evaluation of hexachlorocyclohexane contamination from the last lindane production plant operating in India
- S. Jit, M. Dadhwal, R. Lal
- Environmental ScienceEnvironmental science and pollution research…
- 1 May 2011
The contamination levels in ground and river water suggest significant run-off from the dumped HCH wastes and contamination of drinking water resources and the extent of dumping urgently needs to be assessed regarding the risks to human and ecosystem health.