Table 3 Evaluation of positive evolution of seven genes of the studied Streptomyces strains by Z-test.

From: Biogeography and Adaptive evolution of Streptomyces Strains from saline environments

Gene

Model

Mean dN/dS (ω)

Log(L)

p-value

rpoB

M0 & Mla

0.378804

−2142.36

0.058000000

recA

M0 & Mla

0.494259

−1888.93

0.048843500

atpD

M0 & Mla

0.507579000

−2083.89

0.048527700

ect A

M2a & M8

1.423620000

−4847.17

0.035862800

ect B

M2a & M8

1.638589000

−10855.1

0.043130400

ect C

M2a & M8

1.266699000

−4212.67

0.048411300

ect D

M2a & M8

1.526390000

−5989.45

0.052474300

  1. Two optimum positive selection models (M2a and M8) show presence of sites of the studied genes under positive selection, while model M0 & Mla indecated the studied genes experience a neutral evolution. The dN/dS ratios ω for each specific model were used to detect the studied genes undergoing positive selection, ω > 1 indicates residues of genes under positive selection. The P value for each specific model was employed to estimate significance of positive selections among seven genes.
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