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. 2017 Sep 11;7:11231. doi: 10.1038/s41598-017-11548-8

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© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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The evolutionary relationship of arrA sequences. The phylogeny was reconstructed by maximum likelihood with 71 nucleotide sequences, 160 sites and TIM3 + I + G + F selected as best fit model. Support values for each node were estimated using the Akaike Likelihood Ratio Test (aLRT). Nodes with support values higher than 70% are highlighted with black circles. The reference sequences retrieved from the non-redundant database of the NCBI are shown in black and operational taxonomic unitis (OTUs) from AsV- and AsIII-enrichment cultures (EC) and sediment are shown in blue.