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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