Table 5 Mean nodule number

N/A

S. meliloti 1021 wild type, data set 1 (see Figure 1)

9

11.9 ± 1.0

3.2 + 1.2

SMb20360

SMb20360.original

8

17.4 ± 2.5

4.5 ± 1.2

SMb20360.Xsd1

10

14.7 ± 1.7

4.4 ± 1.4

SMb20431

SMb20431.original

11

12.8 ± 1.6

3.0 ± 0.6

SMb20431.Xsd1

11

13.3 ± 1.9

3.8 ± 0.8

SMc00911

SMc00911.original

11

14.3 ± 2.5

3.3 ± 0.8

SMc00911.Xsd1

11

15.3 ± 1.8

3.2 ± 1.1

SMa1334

SMa1334.original

10

15.7 ± 2.1

5.7 ± 0.9

SMa1334.Xsd1

11

16.4 ± 1.1

3.6 ± 1.7

SMc01266

SMc01266.original

11

14.4 ± 2.4

4.2 ± 0.5

SMc01266.Xsd1

11

17.8 ± 1.6

4.6 ± 1.2

SMc03964

SMc03964.original

11

16.3 ± 1.6

4.2 ± 0.5

SMc03964.Xsd6

10

15.2 ± 2.3

4.0 ± 0.9

N/A

uninoculated, data set 1 (see Figure 1)

5

0

0

N/A

S. meliloti 1021 wild type, data set 2 (see Figure 2)

179

12.5 ± 0.5

3.2 ± 0.3

SMc01562

ΔSMc01562.6

24

14.1 ± 1.3

2.2 ± 0.4

ΔSMc01562.25

25

11.6 ± 1.2

2.5 ± 0.5

ΔSMc01562.100

24

11.8 ± 0.9

2.0 ± 0.6

SMc01986

ΔSMc01986.1

26

18.0 ± 1.8

4.5 ± 0.8

ΔSMc01986.6

26

15.3 ± 2.1

4.4 ± 0.8

ΔSMc01986.25

25

17.2 ± 2.3

6.8 ± 1.1

ΔSMc01986.100

25

16.8 ± 1.8

6.7 ± 1.0

SMc01424-22

ΔSMc01422-24.D21

110

13.1 ± 0.7

3.7 ± 0.4

ΔSMc01422-24.D29

109

11.1 ± 0.6

3.6 ± 0.3

SMc00135

ΔSMc00135.B1

81

14.0 ± 0.7

2.8 ± 0.3

ΔSMc00135.B17

76

13.5 ± 0.9

3.3 ± 0.4

SMa0044

ΔSMa0044.c1

24

11.8 ± 1.3

4.2 ± 0.6

ΔSMa0044.c6

25

12.6 ± 1.2

3.0 ± 0.8

ΔSMa0044.c10

24

13.5 ± 1.2

2.0 ± 0.5

N/A

uninoculated, data set 2 (see Figure 2)

82

0

0.1 ± 0.1