Article (Scientific journals)
The first known virus isolates from Antarctic sea ice have complex infection patterns
Luhtanen, A.-M.; Eronen-Rasimus, E.; Oksanen, H. M. et al.
2018In FEMS Microbiology Ecology, 94 (4)
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Keywords :
Sea ice microbiology; Virus isolation; Virus-host interactions; VLP in sea ice; Antarctica; Southern Ocean; Weddell Sea; Bacteria (microorganisms); Octadecabacter
Abstract :
[en] Viruses are recognized as important actors in ocean ecology and biogeochemical cycles, but many details are not yet understood. We participated in a winter expedition to the Weddell Sea, Antarctica, to isolate viruses and to measure virus-like particle abundance (flow cytometry) in sea ice. We isolated 59 bacterial strains and the first four Antarctic sea-ice viruses known (PANV1, PANV2, OANV1 and OANV2), which grow in bacterial hosts belonging to the typical sea-ice genera Paraglaciecola and Octadecabacter. The viruses were specific for bacteria at the strain level, although OANV1 was able to infect strains from two different classes. Both PANV1 and PANV2 infected 11/15 isolated Paraglaciecola strains that had almost identical 16S rRNA gene sequences, but the plating efficiencies differed among the strains, whereas OANV1 infected 3/7 Octadecabacter and 1/15 Paraglaciecola strains and OANV2 1/7 Octadecabacter strains. All the phages were cold-active and able to infect their original host at 0°C and 4°C, but not at higher temperatures. The results showed that virus-host interactions can be very complex and that the viral community can also be dynamic in the winter-sea ice. © FEMS 2018. All rights reserved.
Research center :
FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège
Disciplines :
Microbiology
Author, co-author :
Luhtanen, A.-M.;  Marine Research Centre, Finnish Environment Institute, Helsinki, Finland, Molecular and Integrative Biosciences Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland, Tvärminne Zoological Station, University of Helsinki, Hanko, Finland
Eronen-Rasimus, E.;  Marine Research Centre, Finnish Environment Institute, Helsinki, Finland
Oksanen, H. M.;  Molecular and Integrative Biosciences Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
Tison, Jean-Louis;  Laboratoire de Glaciologie, DGES, Université Libre de Bruxelles, Belgium
Delille, Bruno  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Dieckmann, G. S.;  Alfred Wegener Institute Helmholtz Center for Polar and Marine Research, Bremerhaven, Germany
Rintala, J.-M.;  Tvärminne Zoological Station, University of Helsinki, Hanko, Finland, Department of Environmental Sciences, University of Helsinki, Helsinki, Finland, Institute for Atmospheric and Earth System Research (INAR), Faculty of Science, University of Helsinki, Helsinki, Finland
Bamford, D. H.;  Molecular and Integrative Biosciences Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
Language :
English
Title :
The first known virus isolates from Antarctic sea ice have complex infection patterns
Publication date :
2018
Journal title :
FEMS Microbiology Ecology
ISSN :
0168-6496
eISSN :
1574-6941
Publisher :
Oxford University Press
Volume :
94
Issue :
4
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
Nottbeck Foundation
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Onni Talas Foundation
Finlands Akademi [FI]
BELSPO - Politique scientifique fédérale [BE]
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