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Viral characteristics of the warm Atlantic and cold Arctic water masses in the Nordic Seas

Gao, C, Xia, J, Zhou, X, Liang, X, Jiang, Y, Wang, M, Shao, H, Shi, X, Guo, C, He, H, Wang, H, He, J, Hu, D, Wang, X, Zhao, J, Zhang, Y-Z, Sung, YY, Mok, YJ, Wong, LL, McMinn, A ORCID: 0000-0002-2133-3854, Suttle, CA and Wang, M 2021 , 'Viral characteristics of the warm Atlantic and cold Arctic water masses in the Nordic Seas' , Applied and Environmental Microbiology, vol. 87, no. 22 , pp. 1-18 , doi: 10.1128/AEM.01160-21.

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Abstract

Nordic Seas are the subarctic seas connecting the Arctic Ocean and North Atlantic Ocean with complex water masses, experiencing an abrupt climate change. Though knowledge of the marine virosphere has expanded rapidly, the diversity of viruses and their relationships with host cells and water masses in the Nordic Seas remain to be fully revealed. Here, we establish the Nordic Sea DNA virome (NSV) data set of 55,315 viral contigs including 1,478 unique viral populations from seven stations influenced by both the warm Atlantic and cold Arctic water masses. Caudovirales dominated in the seven NSVs, especially in the warm Atlantic waters. The major giant nucleocytoplasmic large DNA viruses (NCLDVs) contributed a significant proportion of the classified viral contigs in the NSVs (32.2%), especially in the cold Arctic waters (44.9%). The distribution patterns of Caudovirales and NCLDVs were a reflection of the community structure of their hosts in the corresponding water masses and currents. Latitude, pH, and flow speed were found to be key factors influencing the microbial communities and coinfluencing the variation of viral communities. Network analysis illustrated the tight coupling between the variation of viral communities and microbial communities in the Nordic Seas. This study suggests a probable linkage between viromes, host cells, and surface water masses from both the cool Arctic and warm Atlantic Oceans.

Item Type: Article
Authors/Creators:Gao, C and Xia, J and Zhou, X and Liang, X and Jiang, Y and Wang, M and Shao, H and Shi, X and Guo, C and He, H and Wang, H and He, J and Hu, D and Wang, X and Zhao, J and Zhang, Y-Z and Sung, YY and Mok, YJ and Wong, LL and McMinn, A and Suttle, CA and Wang, M
Keywords: virus, Arctic, Nordic, DNA virome, Nordic Seas, microbial community, metagenomics, water masses and currents
Journal or Publication Title: Applied and Environmental Microbiology
Publisher: Amer Soc Microbiology
ISSN: 0099-2240
DOI / ID Number: 10.1128/AEM.01160-21
Copyright Information:

Copyright © 2021 American Society for Microbiology. All Rights Reserved.

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