Article (Scientific journals)
The plastisphere in marine ecosystem hosts potential specific microbial degraders including Alcanivorax borkumensis as a key player for the low-density polyethylene degradation
Delacuvellerie, Alice; Cyriaque, Valentine; Gobert, Sylvie et al.
2019In Journal of Hazardous Materials, 380
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Keywords :
Bacterial community; Enrichment culture; biofilm; Marine environment; Plastic degradation; Biodegradation
Abstract :
[en] Most plastics are released to the environment in landfills and around 32% end up in the sea, inducing large ecological and health impacts. The plastics constitute a physical substrate and potential carbon source for microorganisms. The present study compares the structures of bacterial communities from floating plastics, sediment-associated plastics and sediments from the Mediterranean Sea. The 16S rRNA microbiome profiles of surface and sediment plastic-associated microbial biofilms from the same geographic location differ significantly, with the omnipresence of Bacteroidetes and Gammaproteobacteria. Our research confirmed that plastisphere hosts microbial communities were environmental distinct niche. In parallel, this study used environmental samples to investigate the enrichment of potential plastic-degrading bacteria with Low Density PolyEthylene (LDPE), PolyEthylene Terephthalate (PET) and PolyStyrene (PS) plastics as the sole carbon source. In this context, we showed that the bacterial community composition is clearly plastic nature dependent. Hydrocarbon-degrading bacteria such as Alcanivorax, Marinobacter and Arenibacter genera are enriched with LDPE and PET, implying that these bacteria are potential players in plastic degradation. Finally, our data showed for the first time the ability of Alcanivorax borkumensis to form thick biofilms specifically on LDPE and to degrade this petroleum-based plastic.
Research Center/Unit :
FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège
Stareso
Disciplines :
Aquatic sciences & oceanology
Microbiology
Environmental sciences & ecology
Author, co-author :
Delacuvellerie, Alice;  Proteomics and Microbiology Department, University of Mons, 20 place du Parc, Mons, 7000, Belgium
Cyriaque, Valentine;  Proteomics and Microbiology Department, University of Mons, 20 place du Parc, Mons, 7000, Belgium
Gobert, Sylvie  ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Océanographie biologique
Benali, Samira;  Polymer and Composite Materials Department, University of Mons, 15 Avenue Maistriau, Mons, 7000, Belgium
Wattiez, Ruddy;  Proteomics and Microbiology Department, University of Mons, 20 place du Parc, Mons, 7000, Belgium
Language :
English
Title :
The plastisphere in marine ecosystem hosts potential specific microbial degraders including Alcanivorax borkumensis as a key player for the low-density polyethylene degradation
Publication date :
2019
Journal title :
Journal of Hazardous Materials
ISSN :
0304-3894
eISSN :
1873-3336
Publisher :
Elsevier B.V.
Volume :
380
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
UMONS - Université de Mons
F.R.S.-FNRS - Fund for Scientific Research
Funding number :
Fund for Scientific Research (F.R.S-FNRS) FC 23347
Available on ORBi :
since 03 March 2020

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