Functional divergence in gastrointestinal microbiota in physically-separated genetically identical mice Authors: G. B. Rogers1,2*, J. Kozlowska2 J. Keeble2, K. Metcalfe3, M. Fao3, S. E. Dowd4, A. J. Mason2, M. A. McGuckin1, K. D. Bruce2 1 Immunity, Infection, and Inflammation Program, Mater Research Institute – University of Queensland, Translational Research Institute, Woolloongabba, Australia. 2 King's College London, Institute of Pharmaceutical Science, London, SE1 9NH, UK 3Charles River UK, Manston Rd. Margate, Kent CT9 4LT UK 4 Molecular Research MR DNA, Shallowater, TX 79363, USA Supplementary information Supplementary information Chao1 Sample Mean Room 1 257.84 Std. deviation 27.03 Room 2 282.94 58.7 B Room 3 311.44 88.59 B Room 4 168.43 18.52 A significance B OTU richness Sample Mean Room 1 354.80 Std. deviation 17.00 Room 2 421.40 151.13 B Room 3 706.40 342.38 B Room 4 208.00 23.67 A significance B Shannon index Room 1 7.74 Std. deviation 2.23 Room 2 10.23 1.71 B Room 3 9.10 1.22 B Room 4 4.45 0.38 A Sample Mean significance B Supplementary Table 1. Bacterial alpha diversity assessed using the Chao1 richness estimate, OTU richness, and Shannon Index, with Kruskall-Wallis test of K samples with a controlled multiple pairwise comparison. Significant differences in measures are indicated using standard notation; samples that share a letter are not significantly different, while samples that do not share a letter are significantly different. In this table, we see room 4 is significantly different than rooms 1, 2 and 3 for all measures (p<0.001). Phylum Genus Bacteroidetes Firmicutes Bacteroidetes Bacteroidetes Firmicutes Firmicutes Bacteroidetes Bacteroidetes Firmicutes Firmicutes Bacteroidetes Firmicutes Firmicutes Proteobacteria Bacteroidetes Proteobacteria Proteobacteria Proteobacteria Firmicutes Firmicutes Prevotella Coprococcus Bacteroides Parabacteroides Lactobacillus Oscillospira Alistipes Tannerella Clostridium Roseburia Pedobacter Ruminococcus Blautia Sutterella Sphingobacterium Rhodospirillum Novispirillum Nautilia Butyrivibrio Eubacterium Mean abundance (percentage) 38.96 16.37 7.07 6.39 4.38 3.82 3.55 3.54 3.47 1.91 1.86 1.52 1.41 0.72 0.63 0.50 0.50 0.45 0.34 0.27 Supplementary Table 2. The 20 genera identified with the highest mean abundance in the faecal samples studied. Group Prevotella Group Pedobacter Group Alistipes Group Novispirillum 1 16.013 A 1 0.905 A 1 5.032 B 1 0 2 32.46 AB 2 4.513 B 2 4.949 B 2 0.409 A 3 43.529 B 3 2.009 A 3 3.696 AB 3 1.595 B 63.838 C 0 A 0.539 A 0 A 4 Group Coprococcus 4 Group Ruminococcus 4 Group Tannerella 4 Group A Eubacterium 1 41.323 B 1 3.501 B 1 1.788 A 1 0.188 AB 2 11.891 A 2 0.779 A 2 5.674 C 2 0.092 A 3 7.908 A 3 1.191 AB 3 4.485 BC 3 0.03 A 4.37 A 0.616 A 2.203 AB 0.78 B 4 Group Bacteroides 4 Group Sutterella 4 Group Clostridium 4 Group Porphyromonas 1 5.575 AB 1 0 A 1 5.655 B 1 0.177 2 11.537 C 2 1.826 B 2 2.196 A 2 0.547 B 3 9.835 BC 3 1.074 AB 3 1.923 A 3 0.331 AB 4 1.324 A 4 0 A 4 4.124 AB 4 0 Group Parabacteroides Group Sphingobacterium Group Roseburia Group AB A Anaerotruncus 1 3.359 A 1 0.243 A 1 4.16 B 1 0.297 B 2 11.02 B 2 1.032 B 2 0.803 A 2 0.035 A 3 8.179 B 3 1.249 B 3 0.688 A 3 0.069 A 4 2.988 A 4 0 A 4 1.973 AB 4 0.067 A Supplementary Table 3. Controlled ANOVA tests identified genera whose relative abundance differed significantly between room groups (cont p < 0.05). Based upon controlled ANOVA using least square means this table lists significantly different genera between groups (p < 0.05). The LS mean for each genera and group is provided. Group indicates which room group. Each genus with significant differences is indicated along with their LS mean and their relative significance. Groups which share a letter are not significantly different from each other while groups which do not share a letter (A, B, C) are significantly different (thus, a group which has A is significantly different from a group which only has letter B, while a group with letter A is not significantly different from a group which has AB). Supplementary Figure 1. Variation in microbiota phyla