Effect of polybrominated diphenyl ether (PBDE) treatment on the composition and function of the bacterial community in the sponge Haliclona cymaeformis.
Type
ArticleAuthors
Tian, Ren-MaoLee, On On
Wang, Yong
Cai, Lin
Bougouffa, Salim

Chiu, Jill Man Ying
Wu, Rudolf Shiu Sun
Qian, Pei-Yuan

Date
2015-01-14Permanent link to this record
http://hdl.handle.net/10754/596782
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Marine sponges play important roles in benthic environments and are sensitive to environmental stresses. Polybrominated diphenyl ethers (PBDEs) have been widely used as flame retardants since the 1970s and are cytotoxic and genotoxic to organisms. In the present study, we studied the short-period effect of PBDE-47 (2,2',4,4'-tetrabromodiphenyl ether) treatment on the community structure and functional gene composition of the bacterial community inhabiting the marine sponge Haliclona cymaeformis. Our results showed that the bacterial community shifted from an autotrophic bacteria-dominated community to a heterotrophic bacteria-dominated community in response to PBDE-47 in a time- and concentration-dependent manner. A potentially symbiotic sulfur-oxidizing bacterium (SOB) was dominant (>80% in abundance) in the untreated sponge. However, exposure to a high concentration (1 μg/L) of PBDE-47 caused a substantial decrease in the potential symbiont and an enrichment of heterotrophic bacteria like Clostridium. A metagenomic analysis showed a selective effect of the high concentration treatment on the functional gene composition of the enriched heterotrophic bacteria, revealing an enrichment for the functions responsible for DNA repair, multidrug efflux pumping, and bacterial chemotaxis and motility. This study demonstrated that PBDE-47 induced a shift in the composition of the community and functional genes in the sponge-associated bacterial community, revealing the selective effect of PBDE-47 treatment on the functions of the bacterial community in the microenvironment of the sponge.Citation
Tian R-M, Lee OO, Wang Y, Cai L, Bougouffa S, et al. (2015) Effect of polybrominated diphenyl ether (PBDE) treatment on the composition and function of the bacterial community in the sponge Haliclona cymaeformis. Frontiers in Microbiology 5. Available: http://dx.doi.org/10.3389/fmicb.2014.00799.Sponsors
This research is supported by the National Basic Research Program of China (973 Program, No: 2012CB417304), State Key Laboratory of Marine Pollution (SKLMP) Seed Collaborative Research fund (CITYU12SC01), the Area of Excellence (AoE) fund (AoE04/04-II) and an award (SA-C0040/UK-C0016) from the King Abdullah University of Science and Technology granted to Pei-Yuan Qian.Publisher
Frontiers Media SAJournal
Frontiers in MicrobiologyPubMed ID
25642227PubMed Central ID
PMC4294214ae974a485f413a2113503eed53cd6c53
10.3389/fmicb.2014.00799
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