Dominant petroleum hydrocarbon-degrading bacteria in the Archipelago Sea in South-West Finland (Baltic Sea) belong to different taxonomic groups than hydrocarbon degraders in the oceans

Reunamo, Anna; Riemann, Lasse; Leskinen, Piia; Jørgensen, Kirsten S.

doi:10.1016/j.marpolbul.2013.04.006

Cited by 17 publications

(10 citation statements)

References 36 publications

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“…By contrast, in our study, Gammaproteobacteria and Flavobacteriia were generally rare, including the plastics-associated biofilms, which is not surprising, because these bacteria are normally found in truly marine areas and not brackish systems, such as the Baltic Sea. In line with the composition of bacterial communities generated in our experiment, Riemann et al (2008) found that summer surface communities collected approximately 90 km south of our sampling location in the Baltic were dominated by Betaproteobacteria and Actinobacteria (see also Reunamo et al, 2013).…”

Section: Species Sorting In Biofilm Communities On Microplasticssupporting

confidence: 80%

Evidence for selective bacterial community structuring on microplastics

Ogonowski

Motiei

Ininbergs

et al. 2018

Environmental Microbiology

300

188

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In aquatic ecosystems, microplastics are a relatively new anthropogenic substrate that can readily be colonized by biofilm-forming organisms. To examine the effects of substrate type on microbial community assembly, we exposed ambient Baltic bacterioplankton to plastic substrates commonly found in marine environments (polyethylene, polypropylene and polystyrene) as well as native (cellulose) and inert (glass beads) particles for 2 weeks under controlled conditions. The source microbial communities and those of the biofilms were analyzed by Illumina sequencing of the 16S rRNA gene libraries. All biofilm communities displayed lower diversity and evenness compared with the source community, suggesting substrate-driven selection. Moreover, the plastics-associated communities were distinctly different from those on the non-plastic substrates. Whereas plastics hosted greater than twofold higher abundance of Burkholderiales, the non-plastic substrates had a significantly higher proportion of Actinobacteria and Cytophagia. Variation in the community structure, but not the cell abundance, across the treatments was strongly linked to the substrate hydrophobicity. Thus, microplastics host distinct bacterial communities, at least during early successional stages.

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Section: Species Sorting In Biofilm Communities On Microplasticssupporting

confidence: 80%

Evidence for selective bacterial community structuring on microplastics

Ogonowski

Motiei

Ininbergs

et al. 2018

Environmental Microbiology

300

188

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“…Little is known about the aromatic hydrocarbon metabolism of R. ornithinolytica , but it has been isolated from oil-contaminated soil ( 32 ) and can grow with benzoic acid as the sole C source ( 33 ). We can only speculate on how this relates to the ecology of these organisms and whether it influences their role as diazotrophs, but we note that the genetic capacity to degrade aromatic compounds is widespread in Baltic Sea bacterioplankton ( 34 ) and that aromatic compounds may be particularly prevalent in waters influenced by river outflow ( 35 ), like the Baltic Sea.…”

Section: Resultsmentioning

confidence: 99%

Genomics and Ecophysiology of Heterotrophic Nitrogen-Fixing Bacteria Isolated from Estuarine Surface Water

Bentzon-Tilia

Severin

Hansen

et al. 2015

mBio

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The ability to reduce atmospheric nitrogen (N2) to ammonia, known as N2 fixation, is a widely distributed trait among prokaryotes that accounts for an essential input of new N to a multitude of environments. Nitrogenase reductase gene (nifH) composition suggests that putative N2-fixing heterotrophic organisms are widespread in marine bacterioplankton, but their autecology and ecological significance are unknown. Here, we report genomic and ecophysiology data in relation to N2 fixation by three environmentally relevant heterotrophic bacteria isolated from Baltic Sea surface water: Pseudomonas stutzeri strain BAL361 and Raoultella ornithinolytica strain BAL286, which are gammaproteobacteria, and Rhodopseudomonas palustris strain BAL398, an alphaproteobacterium. Genome sequencing revealed that all were metabolically versatile and that the gene clusters encoding the N2 fixation complex varied in length and complexity between isolates. All three isolates could sustain growth by N2 fixation in the absence of reactive N, and this fixation was stimulated by low concentrations of oxygen in all three organisms (≈4 to 40 µmol O2 liter−1). P. stutzeri BAL361 did, however, fix N at up to 165 µmol O2 liter−1, presumably accommodated through aggregate formation. Glucose stimulated N2 fixation in general, and reactive N repressed N2 fixation, except that ammonium (NH4+) stimulated N2 fixation in R. palustris BAL398, indicating the use of nitrogenase as an electron sink. The lack of correlations between nitrogenase reductase gene expression and ethylene (C2H4) production indicated tight posttranscriptional-level control. The N2 fixation rates obtained suggested that, given the right conditions, these heterotrophic diazotrophs could contribute significantly to in situ rates.

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“…1 Marine Research Center, Finnish Environment Institute (SYKE), Agnes Sjöbergin Katu 2, 00790 Helsinki, Finland. 2 Aarhus Universitet (AU), Biosciences, Frederiksborgvej 399, 4000 Roskilde, Denmark. 3 Institute of Molecular and Cell Biology, University of Tartu (UTA RTU ), Riia 23, 51010 Tartu, Estonia.…”

Section: Fundingmentioning

confidence: 99%

“…The Baltic Sea is the second largest brackish water basin in the world and is characterised by strong stratification, high nutrient concentrations, continuous oxygen deficiency in most deep water basins and low salinity [1]. With a coastline shared by nine highly industrialised countries, it supports approximately 15% of the world's total maritime traffic, including the transport of different types of oil [2,3]. Since large amounts of oil are used, transported and stored in this region, oil and oil spills are considered a major threat to the Baltic Sea ecosystem [3].…”

Section: Introductionmentioning

confidence: 99%

“…Crude oils containing large and heavy hydrocarbon molecules ranging from 5 to 40 carbons in length do not dissolve readily in water [3,6]. The most toxic components of crude oils are the polycyclic aromatic hydrocarbons (PAHs), many of which possessing mutagenic and/ or carcinogenic properties [2,17]. Moreover, the chemical and physical properties of oil begin to change when it enters the sea and undergoes the so-called weathering.…”

Section: Introductionmentioning

confidence: 99%

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The EU Horizon 2020 project GRACE: integrated oil spill response actions and environmental effects

et al. 2019

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This article introduces the EU Horizon 2020 research project GRACE (Integrated oil spill response actions and environmental effects), which focuses on a holistic approach towards investigating and understanding the hazardous impact of oil spills and the environmental impacts and benefits of a suite of marine oil spill response technologies in the cold climate and ice-infested areas of the North Atlantic and the Baltic Sea. The response methods considered include mechanical collection in water and below ice, in situ burning, use of chemical dispersants, natural biodegradation, and combinations of these. The impacts of naturally and chemically dispersed oil, residues resulting from in situ burning, and non-collected oil on fish, invertebrates (e.g. mussels, crustaceans) and macro-algae are assessed by using highly sensitive biomarker methods, and specific methods for the rapid detection of the effects of oil pollution on biota are developed. By observing, monitoring and predicting oil movements in the sea through the use of novel online sensors on vessels, fixed platforms including gliders and the so-called SmartBuoys together with real-time data transfer into operational systems that help to improve the information on the location of the oil spill, situational awareness of oil spill response can be improved. Methods and findings of the project are integrated into a strategic net environmental benefit analysis tool (environment and oil spill response, EOS) for oil spill response strategy decision making in cold climates and ice-infested areas.

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Dominant petroleum hydrocarbon-degrading bacteria in the Archipelago Sea in South-West Finland (Baltic Sea) belong to different taxonomic groups than hydrocarbon degraders in the oceans

Cited by 17 publications

References 36 publications

Evidence for selective bacterial community structuring on microplastics

Evidence for selective bacterial community structuring on microplastics

Genomics and Ecophysiology of Heterotrophic Nitrogen-Fixing Bacteria Isolated from Estuarine Surface Water

The EU Horizon 2020 project GRACE: integrated oil spill response actions and environmental effects

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