The first known virus isolates from Antarctic sea ice have complex infection patterns

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Luhtanen , A-M , Eronen-Rasimus , E L , Oksanen , H M , Tison , J-L , Delille , B , Dieckmann , G S , Rintala , J-M & Bamford , D H 2018 , ' The first known virus isolates from Antarctic sea ice have complex infection patterns ' , FEMS Microbiology Ecology , vol. 94 , no. 4 , 028 . https://doi.org/10.1093/femsec/fiy028

Title: The first known virus isolates from Antarctic sea ice have complex infection patterns
Author: Luhtanen, Anne-Mari; Eronen-Rasimus, Eeva Liisa; Oksanen, Hanna Maarit; Tison, Jean-Louis; Delille, Bruno; Dieckmann, Gerhard S; Rintala, Janne-Markus; Bamford, Dennis Henry
Contributor: University of Helsinki, Biosciences
University of Helsinki, Finnish Environment Institute
University of Helsinki, Molecular and Integrative Biosciences Research Programme
University of Helsinki, Environmental Sciences
University of Helsinki, Biosciences
Date: 2018-04
Language: eng
Number of pages: 15
Belongs to series: FEMS Microbiology Ecology
ISSN: 0168-6496
URI: http://hdl.handle.net/10138/300595
Abstract: 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 degrees C and 4 degrees 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.
Subject: 1183 Plant biology, microbiology, virology
1181 Ecology, evolutionary biology
virus-host interactions
virus isolation
sea ice microbiology
VLP in sea ice
BACTERIAL-GROWTH RATE
PHAGE-HOST SYSTEMS
MARINE-BACTERIA
SOUTHERN-OCEAN
PACK ICE
PSYCHROPHILIC BACTERIA
PHYLOGENETIC ANALYSES
PROKARYOTIC VIRUSES
VIRAL ABUNDANCE
WEDDELL SEA
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