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Figure 5 | BMC Evolutionary Biology

Figure 5

From: Contrasting evolutionary patterns of spore coat proteins in two Bacillus species groups are linked to a difference in cellular structure

Figure 5

Heat map presentations for all pairwise Wilcoxon tests in the ten fully sequenced species. (A) Pairwise tests between coat proteins genes and non-coat non-essential genes. Each cell represents a one-sided p-value calculated with the alternative hypothesis: coat protein gene ω > nonCE ω. Most cells within the B. subtilis-group are red with p-values less than 0.05, indicating coat protein gene ω > nonCE ω. Most cells within the B. cereus-group are green with p-values greater than 0.95, indicating the opposite: coat protein gene ω < nonCE gene ω. The diagonal cells would suggest self-comparison and are excluded. A species reference tree was drawn on the left. (B) Pairwise tests between essential genes and nonCE genes. Each cell represents a one-sided p-value calculated with the alternative hypothesis: essential gene ω > nonCE ω. Essential genes generally have smaller ω and evolve slower than nonCE genes. An exception occurs in the B. weihenstephanensis branch, where essential genes have higher ω than nonCE genes. In the panels, p represents p-values, ωcoat, ωnonCE, and ωess represent ω for coat, nonCE, and essential proteins genes. Explanations of abbreviated species names are in Figure 2.

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