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. 2015 Apr 15;16(1):296. doi: 10.1186/s12864-015-1467-7

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© Loux et al.; licensee BioMed Central. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Phylogenetic tree of the 22 sequenced strains of Propionibacterium freudenreichi based on its core proteome. The phenotypes for nitrate and various sugars degradation are coded with shades of grey, from white (no sugar degradation) to black (perfect degradation, see methods for additional details on the numerical values). There is no obvious phylogenetic structure underlying sugar or nitrate degradation. Sugars and nitrate were abbreviated as follows: nitrate (nit), L-arabinose (L-arn), ribose (rib), D-fructose (D-fru), arbutine (arb), lactose (lac), melibiose (mel), xylitol (xyl), L-arabitol (L-art) and gluconate (glcn).