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Table 4 Selection on numit RPS13 in seven rosid species.

From: Molecular adaptation and expression evolution following duplication of genes for organellar ribosomal protein S13 in rosids

Taxon

Purifying Selection (%, Ka/Ks < 1)a

Neutral Evolution (%, Ka/Ks = 1)a

Positive Selection (%, Ka/Ks > 1)a

M1-MAtest1 comparison

MAtest2-MAtest1 comparison

Selected positive sites

2δL

P Value

2δL

P Value

Malus

65

28

7 (120.33)b

1.7396

0.4190

1.2140

0.2705

31H, 32Q, 117R

Citrus

65

30

5 (154.19)

4.3230

0.1152

3.9182

0.0478 c

50K, 92H

Glycine

67

33

0

0

1

0

1

35C

Medicago

67

33

0

0

1

0

1

None

Gossypium

64

36

0

0.6314

0.7293

0.0024

0.9609

108K

Populus

66

30

4 (18.05)

3.6624

0.1603

3.4746

0.0623

39I, 88S, 102S

Arabidopsis

52

48

0

6.1770

0.0456

0

1

18G, 36H, 60G, 83D

  1. aEstimated using MAtest1.
  2. bBracket indicates Ka/Ks ratio. If Ka/Ks ratio is close to one for the third and fourth class of MAtest1 without statistical support to be greater than one, it will be counted into the category of neutral evolution.
  3. cBoldface indicates a statistically significant difference (P < 0.05).