Author Contributions
AB collected the samples, conceived and designed the experiments, performed the experiments, analyzed the data, performed bioinformatic analysis, wrote the paper, and prepared figures and tables. LL contributed to discussion of metagenome-assembled genome analysis, discussed the data, wrote the paper, and reviewed drafts of the paper. LM performed network analysis, wrote the paper, and reviewed drafts of the paper. CS discussed the data, wrote the paper, and reviewed drafts of the paper. BB discussed the data, wrote and reviewed drafts of the paper. VP conceived and designed the experiments, contributed reagents, materials, and analysis tools, and wrote and reviewed drafts of the paper.
Funding
This study was part of the projects Microsfera (CNPq 407816/2013-5) and INCT-Criosfera (CNPq 028306/2009) and supported by the Brazilian National Council of Technological and Scientific Development (CNPq) and the Brazilian Antarctic Program (ProAntar). The São Paulo Research Foundation – FAPESP supported ABs Doctoral fellowship (2012/23241-0).
Conflict of Interest Statement
The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.