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Table 3 Homoeolog expression levels of genes that were displayed ELD in four tissues of B. napus

From: Homoeolog expression bias and expression level dominance (ELD) in four tissues of natural allotetraploid Brassica napus

Homoeolog regulation in B. napus

Stems

Leaves

Flowers

Siliques

II

XI

IV

IX

II

XI

IV

IX

II

XI

IV

IX

II

XI

IV

IX

Both homoeologs up-regulated

3

0

2

0

2

0

0

0

5

0

8

0

4

0

5

1

Only A homoeolog up-regulated

28

0

0

0

1

0

0

0

63

0

9

3

44

0

3

1

Only C homoeolog up-regulated

0

0

1

0

0

0

1

0

0

0

20

1

1

0

7

1

A up- and C down-regulated

11

0

0

0

3

0

0

0

20

0

7

1

22

0

1

0

Both homoeologs down-regulated

2

17

0

9

1

3

0

0

8

41

0

14

7

17

0

13

Only A homoeolog down-regulated

1

11

0

2

1

2

0

0

18

64

0

16

6

25

0

11

Only C homoeolog down-regulated

3

3

0

5

0

0

0

0

10

10

12

12

6

8

6

17

A down- and C up-regulated

0

0

2

0

0

0

3

0

5

4

6

1

2

1

6

0

Homoeolog from non-dominant progenitor up-regulated

42

–

5

–

6

–

4

–

88

–

34

–

70

–

18

–

Homoeolog from dominant progenitor up-regulated

3

–

2

–

2

–

0

–

10

–

24

–

7

–

9

–

Homoeolog from non-dominant progenitor down-regulated

–

28

–

14

–

5

–

0

–

109

–

27

–

43

–

30

Homoeolog from dominant progenitor down-regulated

–

20

–

11

–

3

–

0

–

51

–

31

–

25

–

24