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Table 2 Ion contents in young and old leaves of two soybean genotypes under LN stress

From: Physiological and metabolomics analyses of young and old leaves from wild and cultivated soybean seedlings under low-nitrogen conditions

 

concentration (mmol. L− 1)

Fold changes Log2(LN/CK)

C

W

CK

LN

CK

LN

C

W

Young leaves

NO3−

2.78 ± 0.00

1.29 ± 0.00

2.26 ± 0.11

1.40 ± 0.01

−1.11**

−0.69**

H2PO4−

16.23 ± 1.53

24.63 ± 0.30

18.57 ± 0.0.26

31.96 ± 0.97

0.60**

0.78**

SO42−

17.29 ± 0.42

18.14 ± 2.25

26.11 ± 0.20

23.59 ± 0.70

0.07

−0.15*

C2O42−

1.37 ± 0.02

1.47 ± 0.03

1.03 ± 0.06

1.72 ± 0.02

0.09*

0.74**

Cl−

1.28 ± 0.01

4.48 ± 1.03

2.39 ± 0.11

4.47 ± 0.07

1.81

0.90

Na+

2.79 ± 0.01

1.52 ± 0.06

2.15 ± 0.15

2.05 ± 0.05

−0.87**

− 0.07

Mg2+

24.63 ± 1.29

20.39 ± 0.31

28.30 ± 0.79

26.48 ± 0.13

−0.27*

−0.10

Mn2+

0.14 ± 0.01

0.12 ± 0.00

0.09 ± 0.00

0.13 ± 0.00

−0.15

0.59**

B3+

0.33 ± 0.00

0.69 ± 0.01

0.35 ± 0.01

1.62 ± 0.00

1.05**

2.22**

Fe3+

0.06 ± 0.00

0.08 ± 0.00

0.05 ± 0.00

0.12 ± 0.00

0.43**

1.17**

Ca2+

11.66 ± 0.39

15.41 ± 0.39

14.61 ± 0.41

14.00 ± 0.05

0.40**

−0.06

K+

144.34 ± 4.49

152.64 ± 4.49

191.66 ± 5.18

169.57 ± 0.30

0.08

−0.18*

P5+

35.01 ± 1.78

39.01 ± 1.78

41.81 ± 0.68

57.06 ± 0.13

0.16

0.45**

Zn2+

0.16 ± 0.01

0.21 ± 0.00

0.14 ± 0.01

0.24 ± 0.00

0.39

0.78

Old leaves

NO3−

4.94 ± 0.04

1.08 ± 0.04

3.96 ± 0.04

0.92 ± 0.04

−2.19**

−2.10**

H2PO4−

19.97 ± 0.14

27.34 ± 0.42

20.58 ± 0.05

46.04 ± 0.66

0.45**

1.16**

SO42−

12.28 ± 0.15

28.04 ± 0.87

2.16 ± 0.12

2.79 ± 0.11

1.19**

0.37**

C2O42−

1.05 ± 0.04

1.14 ± 0.04

1.33 ± 0.00

1.34 ± 0.04

0.12

0.01

Cl−

2.25 ± 0.11

8.46 ± 0.67

2.49 ± 0.18

7.77 ± 0.24

1.91

1.64

Na+

1.03 ± 0.03

2.40 ± 0.51

1.01 ± 0.04

1.82 ± 0.06

1.22*

0.85**

Mg2+

45.05 ± 0.75

38.95 ± 1.48

46.40 ± 0.01

33.28 ± 0.06

−0.21**

− 0.48**

Mn2+

0.17 ± 0.01

0.19 ± 0.04

0.12 ± 0.02

0.16 ± 0.04

0.21

0.46

B3+

0.86 ± 0.02

5.21 ± 0.12

1.09 ± 0.03

4.86 ± 0.05

2.60**

2.16**

Fe3+

0.10 ± 0.03

0.09 ± 0.00

0.04 ± 0.00

0.09 ± 0.00

−0.19

0.98**

Ca2+

59.14 ± 0.55

48.22 ± 0.70

48.96 ± 0.14

31.32 ± 0.07

−0.29**

− 0.64**

K+

152.58 ± 2.48

139.95 ± 3.09

163.44 ± 0.07

172.59 ± 0.70

−0.12*

0.08**

P5+

27.36 ± 0.05

47.08 ± 0.88

32.87 ± 0.12

70.81 ± 0.04

0.78**

1.11**

 

Zn2+

0.08 ± 0.00

0.25 ± 0.01

0.09 ± 0.00

0.35 ± 0.00

1.64

1.96

  1. Values were presented as the mean ± standard error of four biological replicates. C Cultivar soybean, W Wild soybean, CK Control treatment, LN low−N stress. * and ** indicate significant (P < 0.05) and highly significant (P < 0.01) differences, respectively