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Table 2 Selective pressures among psbA gene sequences examined via SLAC and FEL models

From: Molecular evolution of psbA gene in ferns: unraveling selective pressure and co-evolutionary pattern

Dataset**

Model

Numbers and positions of positively/negatively selected site*

p = 0.01

p = 0.05

p = 0.1

p = 0.15

p = 0.2

p = 0.25

One

SLAC

0/22

0/78

0/103

0/137

0/141

1(4)/144

FEL

0/69

1(4)/126

1(4)/150

1(4)/171

1(4)/198

1(4)/210

Two

SLAC

0/4

0/24

0/42

0/71

0/75

0/79

FEL

0/22

1(155)/56

2(155, 352)/81

3(4, 155, 352)/93

4(4, 155, 350, 352)/120

5(4, 53, 155, 350, 352)/139

  1. *The positions of positively selected codons were showed in brackets. p value stands for the statistical significant levels of the models, which is preset before the data manipulation.
  2. ** The contexts of the dataset were introduced in Additional file1Table S3.