High-level diversity of tailed phages, eukaryote-associated viruses, and virophage-like elements in the metaviromes of Antarctic soils

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dc.contributor.authorZablocki, Olivier
dc.contributor.authorvan Zyl, Lonnie
dc.contributor.authorAdriaenssens, Evelien M.
dc.contributor.authorRubagotti, Enrico
dc.contributor.authorTuffin, Marla
dc.contributor.authorCary, Stephen Craig
dc.contributor.authorCowan, Donald A.
dc.date.accessioned2016-10-12T15:07:46Z
dc.date.available2016-10-12T15:07:46Z
dc.date.issued2014
dc.description.abstractThe metaviromes of two distinct Antarctic hyperarid desert soil communities have been characterized. Hypolithic communities, cyanobacterium-dominated assemblages situated on the ventral surfaces of quartz pebbles embedded in the desert pavement, showed higher virus diversity than surface soils, which correlated with previous bacterial community studies. Prokaryotic viruses (i.e., phages) represented the largest viral component (particularly Mycobacterium phages) in both habitats, with an identical hierarchical sequence abundance of families of tailed phages (Siphoviridae>Myoviridae>Podoviridae). No archaeal viruses were found. Unexpectedly, cyanophages were poorly represented in both metaviromes and were phylogenetically distant from currently characterized cyanophages. Putative phage genomes were assembled and showed a high level of unaffiliated genes, mostly from hypolithic viruses. Moreover, unusual gene arrangements in which eukaryotic and prokaryotic virus-derived genes were found within identical genome segments were observed. Phycodnaviridae and Mimiviridae viruses were the second-mostabundant taxa and more numerous within open soil. Novel virophage-like sequences (within the Sputnik clade) were identified. These findings highlight high-level virus diversity and novel species discovery potential within Antarctic hyperarid soils and may serve as a starting point for future studies targeting specific viral groups.en_US
dc.description.accreditationISIen_US
dc.identifier.citationZablocki, O. et al. (2014). High-level diversity of tailed phages, eukaryote-associated viruses, and virophage-like elements in the metaviromes of Antarctic soils. Applied and Environmental Microbiology, 80(22): 6888-6897
dc.identifier.issn0099-2240
dc.identifier.urihttp://hdl.handle.net/10566/2445
dc.identifier.urihttp://dx.doi.org//10.1128/AEM.01525-14
dc.language.isoenen_US
dc.privacy.showsubmitterFALSE
dc.publisherAmerican Society for Microbiology
dc.rightsAmerican Society for Microbiology allows for the archiving of the author final version on this institutional repository.
dc.source.urihttp://dx.doi.org//10.1128/AEM.01525-14
dc.status.ispeerreviewedTRUE
dc.subjectMetaviromesen_US
dc.subjectAntarctic Soilsen_US
dc.titleHigh-level diversity of tailed phages, eukaryote-associated viruses, and virophage-like elements in the metaviromes of Antarctic soilsen_US
dc.typeArticleen_US

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