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Table 3 Rates of synonymous substitution and ratio of nonsynonymous to synonymous substitution

From: Complete plastid genome sequences suggest strong selection for retention of photosynthetic genes in the parasitic plant genus Cuscuta

atp

R N /R S

R S

Synonymous rate increase (× Convolvulaceae)

Globally constrained

0.184

0.205

 

Solanales

0.0885

0.136

 

Convolvulaceae

0.133

0.189

 

Cuscuta

0.821***

0.0206

 

C. exaltata

0.264**

0.216

1.14

C. obtusiflora

0.231**

0.959***

5.07

pet

   

Globally constrained

0.114

0.208

 

Solanales

0.0381

0.131

 

Convolvulaceae

0.0907

0.135

 

Cuscuta

0.0606

0.127

 

C. exaltata

0.245*

0.16

1.19

C. obtusiflora

0.154*

1.037***

7.68

ps

   

Globally constrained

0.0728

0.191

 

Solanales

0.0402

0.106

 

Convolvulaceae

0.046

0.159

 

Cuscuta

0.138**

0.0847

 

C. exaltata

0.0859

0.17

1.07

C. obtusiflora

0.103***

0.91***

5.72

rp

   

Globally constrained

0.227

0.184

 

Solanales

0.0988

0.106

 

Convolvulaceae

0.267

0.157

 

Cuscuta

0.314*

0.0959

 

C. exaltata

0.390***

0.148

0.94

C. obtusiflora

0.232

0.901***

5.74

rpo

   

Globally constrained

0.231

0.175

 

Solanales

0.144

0.163

 

Convolvulaceae

0.218

0.211

 

C. exaltata

0.435***

0.253***

1.2

ndh

   

Globally constrained

0.19

0.223

 

Solanales

0.181

0.114

 

Ipomoea

0.284***

0.401***

 
  1. Significance of rate differences determined by comparing fully constrained tree likelihood to tree with specified node unconstrained. *p < 0.01, **p < 0.001, ***p < 0.0001. All significant results remain significant after sequential Bonferroni tests as described in Rice, W.R. 1989. Evolution.43: 223–225.