Sequential reductive dechlorination of meta-chlorinated polychlorinated biphenyl congeners in sediment microcosms by two different Chloroflexi phylotypes

Article Abstract:

Assays for both quantitative and qualitative analyses are developed to assess sediment microcosm enrichments that reductively dechlorinated polychlorinated biphenyls (PCBs). The results indicate that individual species within Chloroflexi displays a limited range of congener specificities and that a relatively diverse community of species within a deeply branching group of Chloroflexi with complementary congener specificities is likely required for the reductive dechlorination of different PCBs congeners in the environment.

Industrial Organic Chemicals, Polychlorinated Biphenyls, Cyclic Crude and Intermediate Manufacturing, Genetic aspects, Chemical properties

---

Microbial dechlorination of 2,3,5,6-tetrachlorobiphenyl under anaerobic conditions in the absence of soil or sediment

Article Abstract:

Research was conducted to examine the microbial dechlorination of 2,3,5,6-tetrachlorobiphenyl (2,3,5,6-CB) under anaerobic conditions in the absence of soil or sediment. Both meta and ortho dechlorination products from 2,3,5,6,-CB were formed by primary enrichment cultures. Results demonstrate that the classical microbial enrichment method using a minimal medium with a single polychlorinated biphenyl congener was selected for ortho dechlorination of 2,3,5,6-CB.

Microbial populations

---

Microbial reductive dechlorination of aroclor 1260 in Baltimore Harbor sediment microcosms is catalyzed by three phylotypes within the phylum chloroflexi

Article Abstract:

The specific dechlorination pathways for aroclor 1260 which were determined in Baltimore Harbor sediment microcosms demonstrate that the variation in dechlorination patterns of congener mixtures typically observed at different polychlorinated biphenyl impacted sites could potentially be mediated by the synergistic activities of relatively few dechlorinating species.

Science & research, Environmental aspects, Mesocosms, Closed experimental ecosystems, Sediments (Geology), Closed ecological systems

Similar abstracts:

• Abstracts: Rapid quantitative detection of Listeria monocytogenes in meat products by real-time PCR. Quantitative detection of Listeria monocytogenes and Listeria innocua by real-time PCR: assessment of hly, iap, and lin02483 targets and Amplifluor technology
• Abstracts: Complete reductive dechlorination of 1,2-Dichloropropane by anaerobic bacteria. Populations implicate in anaerobic reductive dechlorination of 1,2-dichloropropane in highly enriched bacterial communities
• Abstracts: Quantification of tetracycline resistance genes in feedlot lagoons by real-time PCR. Diverse tetracycline resistance genotypes of megasphaera elsdenii strains selectively cultured from swine feces
• Abstracts: Alteration of the canine small-intestinal lactic acid bacterium microbiota by feeding of potential probiotics
• Abstracts: Mutually exclusive splicing of the insect Dscam Pre-mRNA directed by competing intronic RNA secondary structures

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.