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. 2013 Jul 9;4(4):e00373-13. doi: 10.1128/mBio.00373-13

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Copyright © 2013 Luo et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-ShareAlike 3.0 Unported license, which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original author and source are credited.

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FIG 5 — High-throughput multidimensional scaling (HiT-MDS) plot of the genetic composition of the Roseobacter and SAR11 extant lineages and predicted composition of their respective common ancestors. The genetic composition was determined by mapping the gene families to COG functional categories. COG classes significantly negatively correlated with dimension 1 and hypothesized to include traits associated with r-selected life histories are G (carbohydrate transport and metabolism), I (lipid transport and metabolism), K (transcription), N (cell motility), P (inorganic ion transport and metabolism), Q (secondary-metabolite biosynthesis, transport, and catabolism), T (signal transduction mechanisms), and V (defense mechanisms). COG classes significantly positively correlated with dimension 1 and hypothesized to include traits associated with K-selected life histories are C (energy production and conversion), D (cell cycle control, cell division, and chromosome partitioning), F (nucleotide transport and metabolism), H (coenzyme transport and metabolism), J (translation, ribosomal structure, and biogenesis), M (cell wall/membrane/envelope biogenesis), O (posttranslational modification and protein turnover, chaperones), and U (intracellular trafficking, secretion, and vesicular transport). No significant correlation was found between dimension 1 and COG classes E (amino acid transport and metabolism) or L (replication, recombination, and repair).