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Table 1 Summary of codon-based model analyses of PAML for CHS and UFGT of Scutellaria species

From: Diversifying selection of the anthocyanin biosynthetic downstream gene UFGT accelerates floral diversity of island Scutellaria species

Gene

Model

np

L

ω

Parameters

2ΔL

P

PS site (Pr ω > 1)

CHS

M0

66

−3401.398

0.0269

ω = 0.02694

123.048

2.39E-06

 

free ratio

129

−3339.873

     

M1a

67

−3377.238

0.0467

ω0 = 0.01830 (p0 = 0.97111)

ω1 = 1.000 (p1 = 0.02889)

0.000

NA

 

M2a

69

−3377.238

0.0467

ω0 = 0.01830 (p0 = 0.97111)

ω1 = 1.000 (p1 = 0.02889)

ω2 = 35.71235 (p2 = 0)

   

M7

67

−3350.937

0.0301

α = 0.11018, β = 2.88094

0.062

0.485

 

M8a

68

−3350.906

0.0308

α = 0.11218, β = 3.09870

p0 = 0.99761

p1 = 0.00239; ω1 = 1.000

0.000

NA

 

M8

69

−3350.906

0.0308

α = 0.11218, β = 3.09870

p0 = 0.99761

p1 = 0.00239; ω1 = 1.000

   

UFGT

M0

68

−3020.739

0.5656

ω = 0.56561

81.226

0.012

 

free ratio

133

−2980.126

     

M1a

69

−2961.023

0.4144

ω0 = 0.05827 (p0 = 0.62181)

ω1 = 1.000 (p1 = 0.37819)

20.361

1.90E-05

 

M2a

71

−2950.843

0.6217

ω0 = 0.09111 (p0 = 0.63671)

ω1 = 1.000 (p1 = 0.24187)

ω2 = 2.65082 (p2 = 0.12142)

  

47 N (0.965)

162 M (0.963)

163R (0.996)

M7

69

−2962.585

0.4105

α = 0.02259, β = 0.03044

23.390

4.17E-06

 

M8a

70

−2961.053

0.4144

α = 6.26619, β = 99

p0 = 0.62235

p1 = 0.37765; ω1 = 1.000

20.326

3.41E-06

 

M8

71

−2950.890

0.6198

α = 0.28974, β = 0.72287

p0 = 0.84684

p1 = 0.15316; ω1 = 2.46858

  

40 L (0.958)

47 N (0.993)

111E (0.957)

112A (0.971)

114E (0.985)

131 L (0.964)

132S (0.975)

162 M (0.994)

163R (0.999)

171 K (0.957)

  1. L, Log-likelihood of the data; ω, Mean dN⁄ dS ratio for the entire gene; NA, not available; the PS sites marked in boldface are the amino acids also being detected to be positively selected under the M2a model