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Table 3 Selective pressures of TNLs among five Rosaceae species

From: Species-specific duplications driving the recent expansion of NBS-LRR genes in five Rosaceae species

Family no. Ka / Ks a ω b 2Δln Family no. Ka / Ks a ω b 2Δln
F. vesca P. bretschneideri  
0 0.65 0.64 178.25** 28 0.69 0.65 127.83**
M. domestica    29 0.49 0.55 26.94**
0 0.71 0.72 130.72** 32 0.74 0.82 86.53**
1 0.78 0.80 169.72** 37 0.88 0.92 34.57**
3 0.61 0.64 77.86** 39 0.73 0.55 70.55**
4 0.70 0.70 34.50** P. persica   
7 0.70 0.79 39.21** 1 0.61 0.58 46.66**
9 0.88 1.15 269.70** 2 0.78 0.69 200.14**
10 0.71 0.65 127.61** 3 0.54 0.53 87.14**
13 0.53 0.65 151.63** 5 0.51 0.47 22.47**
14 0.88 0.67 275.29** 6 0.56 0.54 12.24**
15 0.77 0.68 263.14** 7 0.87 0.95 404.73**
16 0.78 0.87 289.13** 8 0.87 0.82 173.19**
23 0.97 1.06 177.42** 9 0.81 0.81 132.38**
24 0.60 0.61 27.06** 11 0.66 0.59 186.11**
25 0.74 0.70 155.33** 12 0.83 0.65 92.60**
P. bretschneideri   14 0.78 0.73 60.48**
2 0.54 0.57 292.28** 16 0.84 0.82 49.62**
3 0.69 0.75 169.17** P. mume   
4 0.65 0.76 143.59** 0 1.15 1.31 257.80**
6 0.72 0.74 6.79* 2 0.89 1.03 333.07**
7 0.80 0.86 108.95** 4 0.52 0.58 18.40**
10 0.65 0.69 127.79** 6 0.80 0.81 173.58**
11 0.88 0.93 161.28** 8 0.97 1.02 125.15**
14 0.65 0.67 125.28** 10 0.60 0.51 30.89**
16 0.92 0.92 259.19** 11 0.56 0.54 132.21**
17 0.78 0.88 35.67** 12 0.89 0.94 344.19**
19 0.86 0.99 142.46** 14 0.92 0.94 313.67**
21 1.08 1.25 130.03** 16 0.75 0.71 99.29**
22 0.69 0.65 196.90** 19 0.79 0.77 49.99**
25 0.56 0.47 51.69** 20 0.89 0.92 127.40**
26 0.64 0.60 62.54**     
  1. aAverage Ka/Ks ratio of each gene family calculated by MEGA; b dN/dS ratio for each gene family using branch model; 2Δln represents the result of LR test for site model; * and ** represent significant (2Δln > 5.991, p < 0.05) and highly significant (2Δln > 9.210, p < 0.01) tests for positive selection between model M7 and M8.