Journal Title
Title of Journal: Polar Biol
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Abbravation: Polar Biology
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Publisher
Springer Berlin Heidelberg
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Authors: Roberta Malavenda Carmen Rizzo Luigi Michaud Berna Gerçe Vivia Bruni Christoph Syldatk Rudolf Hausmann Angelina Lo Giudice
Publish Date: 2015/05/27
Volume: 38, Issue: 10, Pages: 1565-1574
Abstract
The risk of hydrocarbon contamination in marine polar areas is constantly increasing Autochthonous bacteria due to their ability to cope and survive under extreme environmental conditions can play a fundamental role in the hydrocarbon degradation The degradation process is often enhanced by the production of biosurfactant molecules The present study reports for the first time on the isolation of biosurfactantproducing bacteria from Arctic and Antarctic shoreline sediments A total of 199 psychrotolerant bacterial isolates were obtained from hydrocarbonamended with crude or diesel oil microcosms A total of 18 isolates were selected for their ability to grow in the presence of crude oil and produce biosurfactants as it was revealed by the production of good E24 values ≥50 and/or reduction in the surface tension under 30 mN/m The positive response of the isolates to both tests suggests a possible production of biosurfactants with emulsifying and interfacial activities Biosurfactantproducing isolates were mainly affiliated to the genera Rhodococcus 14 isolates followed by Pseudomonas two isolates Pseudoalteromonas one isolate and Idiomarina one isolate Thinlayer chromatography of biosurfactant crude extracts revealed that the majority of the selected isolates were able to produce glycolipidic surfactants Our results enlarge the knowledge which is still poor and fragmentary on biosurfactant producers from polar areas and indicate marine polar sediments as a source of bacteria with potential applications in the remediation of hydrocarboncontaminated cold environmentsALG wishes to thank the Antarctic Project “Limnopolar” POL200606635 funded by the Spanish Ministry of Science and Technology and all colleagues at the Byers camp for their logistic and friendly support to Luigi Michaud during his stay RM wishes to thank all the colleagues at the Karlsruher Institut für Technologie KIT Germany for assistance and support during her stay in their lab This research was supported by grants by the project PolyArc grant number ARCFAC026129200870 and the National Antarctic Museum MNA
Keywords:
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- The HSP70 heat shock response in the Antarctic fish Harpagifer antarcticus
- The diet of the Antarctic fur seal Arctocephalus gazella at Harmony Point, South Shetland Islands: evidence of opportunistic foraging on penguins?
- Water geochemistry and sedimentary pigments in northern Victoria Land lakes, Antarctica
- High Arctic vegetation after 70 years: a repeated analysis from Svalbard
- Factors affecting plasma chemistry values of the black-browed albatross Thalassarche melanophrys
- Large numbers of marine mammals winter in the North Water polynya
- First record of lithodid crabs from Antarctic waters off the Balleny Islands
- Heat hardening in Antarctic notothenioid fishes
- Bacterial diversity in Greenlandic soils as affected by potato cropping and inorganic versus organic fertilization
- Relationships between Arctic and Antarctic Shewanella strains evaluated by a polyphasic taxonomic approach
- Leucistic southern elephant seal at Marion Island
- Atlantic snake pipefish ( Entelurus aequoreus ) extends its northward distribution range to Svalbard (Arctic Ocean)
- Combining limnology and paleolimnology to assess the influence of climate change on two lakes in Southern Greenland
- Extended ecophysiological analysis of Gomphiocephalus hodgsoni (Collembola): flexibility in life history strategy and population response
- Skull morphometry of Pygoscelis (Sphenisciformes): inter and intraspecific variations
- Is management limiting the recovery of the New Zealand sea lion Phocarctos hookeri ?
- Annual development of mat-forming conjugating green algae Zygnema spp. in hydro-terrestrial habitats in the Arctic
- Description of Gosztonyia antarctica , a new genus and species of Zoarcidae (Teleostei: Perciformes) from the Antarctic Ocean
- Temporal and vertical variations of lipid biomarkers during a bottom ice diatom bloom in the Canadian Beaufort Sea: further evidence for the use of the IP 25 biomarker as a proxy for spring Arctic sea ice
- Decadal change in macrobenthic soft-bottom community structure in a high Arctic fjord (Kongsfjorden, Svalbard)
- Synchronicity of movement paths of barren-ground caribou and tundra wolves
- Greater nitrogen and/or phosphorus availability increase plant species’ cover and diversity at a High Arctic polar semidesert
- Models of Arctic-alpine refugia highlight importance of climate and local topography
- Distribution of marine viruses and their potential hosts in Prydz Bay and adjacent Southern Ocean, Antarctic
- The role of arctic zooplankton in biogeochemical cycles: respiration and excretion of ammonia and phosphate during summer
- Temporal patterns of benthic community development in an Arctic fjord (Kongsfjorden, Svalbard): results of a 24-year manipulation study
- Diversity, structure and interactions of encrusting lithophyllic macrofaunal assemblages from Belgica Bank, East Greenland
- Pelagic swarms and beach strandings of the squat lobster Munida gregaria (Anomura: Munididae) in the Beagle Channel, Tierra del Fuego
- Characterization of yeast and filamentous fungi isolated from cryoconite holes of Svalbard, Arctic
- Snow-induced changes in dwarf birch chemistry increase moth larval growth rate and level of herbivory
- Distribution and population dynamics of Euphausia superba : summary of recent findings
- Invasion of terrestrial enchytraeids into two postglacial tundras: North-eastern Greenland and the Arctic Archipelago of Canada (Enchytraeidae, Oligochaeta)
- Variability in the summer diets of juvenile polar cod ( Boreogadus saida ) in the northeastern Chukchi and western Beaufort Seas
- Fish blood as a chemical signal for Antarctic marine invertebrates
- Distribution and diet of 0-group cod ( Gadus morhua ) and haddock ( Melanogrammus aeglefinus ) in the Barents Sea in relation to food availability and temperature
- Photoadaptation of an ice algal community in thin sea ice, Saroma-Ko Lagoon, Hokkaido, Japan
- Photoadaptation of an ice algal community in thin sea ice, Saroma-Ko Lagoon, Hokkaido, Japan
- Chemical defenses of tunicates of the genus Aplidium from the Weddell Sea (Antarctica)
- Plectolyngbya hodgsonii : a novel filamentous cyanobacterium from Antarctic lakes
- Inter-breeding movements of common guillemots ( Uria aalge ) suggest the Barents Sea is an important autumn staging and wintering area
- Degradation of nonane by bacteria from Antarctic marine sediment
- Metabolic fingerprinting of arctic copepods Calanus finmarchicus , Calanus glacialis and Calanus hyperboreus
- Observations of bowhead whales ( Balaena mysticetus ) in the Svalbard area 1940–2009
- Individual variability of behavioural responses by Wandering Albatrosses ( Diomedea exulans ) to human disturbance
- Recent range expansions in non-native predatory beetles on sub-Antarctic South Georgia
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