2016
DOI: 10.3389/fmicb.2016.01502
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Microbiome Dynamics of a Polychlorobiphenyl (PCB) Historically Contaminated Marine Sediment under Conditions Promoting Reductive Dechlorination

Abstract: The toxicity of polychlorinated biphenyls (PCB) can be efficiently reduced in contaminated marine sediments through the reductive dechlorination (RD) process lead by anaerobic organohalide bacteria. Although the process has been extensively investigated on PCB-spiked sediments, the knowledge on the identity and metabolic potential of PCB-dechlorinating microorganisms in real contaminated matrix is still limited. Aim of this study was to explore the composition and the dynamics of the microbial communities of t… Show more

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Cited by 44 publications
(20 citation statements)
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“…Sequences classified to the Dehalococcoidaceae, which are ubiquitous in marine sediments 16 , were third most abundant in the dataset. Their abundance was driven by prevalence in the lower half of cores from reference sites (Fig.…”
Section: Resultsmentioning
confidence: 99%
“…Sequences classified to the Dehalococcoidaceae, which are ubiquitous in marine sediments 16 , were third most abundant in the dataset. Their abundance was driven by prevalence in the lower half of cores from reference sites (Fig.…”
Section: Resultsmentioning
confidence: 99%
“…Although estimating the abundance of 16S rRNA genes from known PCB-dechlorinating taxa as well as putative dechlorinators can yield insights into PCB-dechlorinating communities (Kjellerup et al 2012; Matturro et al 2016a, b), the specific reductive dehalogenase (RDase) genes involved in PCB dechlorination remain poorly understood. Three RDase genes ( pcbA1 , pcbA4, and pcbA5 ) were implicated in PCB dechlorination by gene expression analysis and protein assays (Wang et al 2014).…”
Section: Discussionmentioning
confidence: 99%
“…Although POPs can degrade in the environment by photolysis (e.g., PBDEs; Fang et al 2008 ) the more likely degradation mechanisms for POPs in biota are biological, because light may not penetrate solid matrices, such as sediments and tissues (Johnson et al 2014 ). Metabolic breakdown of PCBs in marine sediments can occur by bacteria (Papale et al 2016 ; Matturro et al 2016 ); however, the extent of this degradation capacity is unknown.…”
Section: Discussionmentioning
confidence: 99%