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Table 1 Carbon and nitrogen contents in young and old leaves of two soybean varieties under LN stress

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

  Total content (%) Fold changes Log2(LN/CK)
C W
CK LN CK LN C W
YL Nitrogen 5.45 ± 0.09 4.91 ± 0.08 5.62 ± 0.16 5.13 ± 0.25 −0.15* − 0.13
Carbon 42.99 ± 0.26 38.24 ± 0.81 40.61 ± 1.19 38.63 ± 1.79 −0.17* − 0.07
C/N 7.89 ± 0.14 7.80 ± 0.30 7.23 ± 0.03 7.54 ± 0.03 − 0.02 0.06
OL Nitrogen 4.49 ± 0.11 4.26 ± 0.05 5.01 ± 0.05 3.94 ± 0.14 −0.08 − 0.35*
Carbon 41.84 ± 0.45 42.45 ± 0.26 40.36 ± 0.06 37.80 ± 0.85 0.02 − 0.10
C/N 9.36 ± 0.33 9.97 ± 0.17 8.06 ± 0.08 9.60 ± 0.14 0.09 0.25*
  1. Values were presented as the mean ± standard error of four biological replicates. C Cultivated soybean, W Wild soybean, CK Control treatment, LN Low nitrogen stress; YL Young leaves, OL Old leaves, C/N Carbon/Nitrogen; * indicate significant (P < 0.05)