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Bacteria beneath the West Antarctic Ice Sheet
Environmental Microbiology, 2009Summary Subglacial environments, particularly those that lie beneath polar ice sheets, are beginning to be recognized as an important part of Earth's biosphere. However, except for indirect indications of microbial assemblages in subglacial Lake Vostok, Antarctica, no sub‐ice sheet environments have been shown to ...
Lanoil, Brian D. +7 more
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Polyunsaturated fatty acids in Antarctic bacteria
Antarctic Science, 1993Thirty eight strains of Antarctic bacteria were screened for the ability to produce polyunsaturated fatty acids (PUFA). Five strains contained eicosapentaenoic acid (20:5ω3) in the range of trace to 3.3% of total fatty acids, and up to 1.4 mg g-1 dry weight.
David S. Nichols +2 more
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Maintenance of membrane fluidity in Antarctic bacteria
Polar Biology, 2001Increase in the synthesis of membrane-fluidizing (such as unsaturated) fatty acids in cold-adapted bacteria is well documented. More recently, a polar carotenoid was found to rigidify synthetic membranes in an in vitro study. Enhanced biosynthesis of some fatty acids that increase membrane fluidity, and also of polar carotenoids has been evidenced in ...
Chattopadhyay M., Jagannadham M.
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Hydrocarbon degradation by Antarctic coastal bacteria
Antarctic Science, 1998Bacterial cultures obtained through selective enrichment of beach sand collected 60 days and one year after treatment of sites in a pilot oil spill trial conducted at Airport Beach, Vestfold Hills, East Antarctica, were examined for the ability to degrade n-alkanes and phenanthrene. The effects of different hydrocarbon mixtures (Special Antarctic Blend
J. E. Cavanagh +3 more
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Biodiscovery and biodiversity of Antarctic bacteria
2008This PhD dissertation explores aspects of the microbial ecology of Antarctica, focussing on the taxonomy and physiological attributes of Antarctic bacteria, as well as investigating the bacterial diversity of previously uncharacterised Antarctic environments.
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Demonstration of antifreeze protein activity in Antarctic lake bacteria
Microbiology, 2004Antifreeze proteins (AFPs) are a structurally diverse group of proteins that have the ability to modify ice crystal structure and inhibit recrystallization of ice. AFPs are well characterized in fish and insects, but very few bacterial species have been shown to have AFP activity to date.
Jack A, Gilbert +3 more
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Searching for novel photolyases in UVC-resistant Antarctic bacteria
Extremophiles, 2017Ultraviolet (UV) light irradiation has serious consequences for cell survival, including DNA damage by formation of cyclobutane pyrimidine dimers (CPD) and pyrimidine (6,4) pyrimidone photoproducts. In general, the Nucleotide Excision Repair pathway repairs these lesions; however, all living forms, except placental mammals and some marsupials, produce ...
Juan José, Marizcurrena +5 more
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Agar-degrading bacteria isolated from Antarctic macroalgae
Folia Microbiologica, 2017This study describes the taxonomic diversity of pigmented, agar-degrading bacteria isolated from the surface of macroalgae collected in King George Island, Antarctica. A total of 30 pigmented, agarolytic bacteria were isolated from the surface of the Antarctic macroalgae Adenocystis utricularis, Monostroma hariotii, Iridaea cordata, and Pantoneura ...
Roxana Alvarado, Sergio Leiva
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Activity of Antarctic fungi extracts against phytopathogenic bacteria
Letters in Applied Microbiology, 2018This study aims to obtain secondary metabolites extracts from filamentous fungi isolated from soil and marine sediments from Antarctic ecosystems and to assess its potential antibacterial activity on Xanthomonas euvesicatoria and Xanthomonas axonopodis pv.
J. Purić +6 more
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