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Rhamnolipid Biosurf...
Rhamnolipid Biosurfactants Enhance Microbial Oil Biodegradation in Surface Seawater from the North Sea
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- Lu, Lu (författare)
- Univ Tubingen, Ctr Appl Geosci, Microbial Ecol, D-72074 Tubingen, Germany.;China West Normal Univ, Coll Environm Sci & Engn, Nanchong 637009, Peoples R China.
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- Rughöft, Saskia (författare)
- Uppsala universitet,Fysiologi och miljötoxikologi,Univ Tubingen, Ctr Appl Geosci, Microbial Ecol, D-72074 Tubingen, Germany.
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- Straub, Daniel (författare)
- Univ Tubingen, Ctr Appl Geosci, Microbial Ecol, D-72074 Tubingen, Germany.;Univ Tubingen, Quant Biol Ctr QBiC, D-72076 Tubingen, Germany.;Cluster Excellence EXC 2124 Controlling Microbes F, D-72076 Tubingen, Germany.
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- Joye, Samantha B. B. (författare)
- Univ Georgia, Dept Marine Sci, Athens, GA 30602 USA.
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- Kappler, Andreas (författare)
- Univ Tubingen, Ctr Appl Geosci, Geomicrobiol, D-72074 Tubingen, Germany.;Cluster Excellence EXC 2124 Controlling Microbes F, D-72076 Tubingen, Germany.
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- Kleindienst, Sara (författare)
- Univ Tubingen, Ctr Appl Geosci, Microbial Ecol, D-72074 Tubingen, Germany.;Univ Stuttgart, Inst Sanit Engn Water Qual & Solid Waste Managemen, Dept Environm Microbiol, D-70569 Stuttgart, Germany.
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Univ Tubingen, Ctr Appl Geosci, Microbial Ecol, D-72074 Tubingen, Germany;China West Normal Univ, Coll Environm Sci & Engn, Nanchong 637009, Peoples R China. Fysiologi och miljötoxikologi (creator_code:org_t)
- American Chemical Society (ACS), 2023
- 2023
- Engelska.
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Ingår i: ACS - ES & T Water. - : American Chemical Society (ACS). - 2690-0637. ; 3:8, s. 2255-2266
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- This study provides strong evidence thatthe biosurfactantrhamnolipid is more efficient than the widely used chemical dispersantsCorexit 9500 and Slickgone NS in stimulating oil biodegradation innatural seawater. Biosurfactants arepromising alternatives to chemical dispersantsfor combating marine oil spills; however, the impacts of biosurfactantson microbial community composition and oil biodegradation activitiesremain largely unknown. Here, we conducted a time-course microcosmexperiment mimicking oil spill scenarios with surface seawater fromthe North Sea, amended with either the biosurfactant rhamnolipid ora dispersant (Corexit 9500 or Slickgone NS). Radioactive tracer assaysto track hexadecane and naphthalene oxidation as well as bacterialproduction revealed the highest hydrocarbon oxidation rates and generalmicrobial activities in the rhamnolipid-amended oil microcosms, followedby oil microcosms with Slickgone and Corexit. Impacts on the microbialcommunity composition differed among treatments, and growth of oil-degrading Colwellia was stimulated remarkably in Corexit-amended oiland oil-only microcosms, while potential oil-degrading Oleispira were highly enriched in the presence of oil in combination withrhamnolipid or Slickgone. Furthermore, increased abundances of Colwellia and Oleispira, and stimulatedbacterial production in microcosms with only rhamnolipid, Corexit,or Slickgone, indicated their involvement in biosurfactant/dispersantbiodegradation. Our findings highlight varying microbial impacts resultingfrom rhamnolipid and chemical dispersants and suggest great promisefor the application of biosurfactants in future marine oil spills.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Naturresursteknik -- Annan naturresursteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Environmental Engineering -- Other Environmental Engineering (hsv//eng)
Nyckelord
- biosurfactants
- chemical dispersants
- oil biodegradation
- oil-degrading microorganisms
- radiotracer assay
- microbial activity
- marine oilspill
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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