Table 2 Summary of the abundance of each group of the AP2/ERF superfamily in B. distachyon, Arabidopsis and rice

AP2

24

18

29

ERF

112

122

139

DREB

52

57

56

I

9

10

9

II

7

16

15

III

32

22

26

IV

4

9

6

ERF

53

65

76

V

9

12

11

VI

11

8

6

VII

7

5

15

VIII

14

15

13

IX

8

18

18

X

6

7

13

a single group

5

7

RAV

4

6

5

Soloist

1

1

1

Total AP2/ERF genes

141

147

174

genome size (Mbp)

355

125

430

The average number of AP2/ERF family genes per Mb (gene/MB)

0.3972

1.1760

0.4047

The percentage of AP2/ERF family genes (%)

0.45

0.55

0.43