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Table 2 N source effect on individual amino acid content (μmol . g FW−1) of roots and leaves of B. napus

From: Leaves play a central role in the adaptation of nitrogen and sulfur metabolism to ammonium nutrition in oilseed rape (Brassica napus)

 

Root

Leaf

 

N0.5

A0.5

N1

A1

N0.5

A0.5

N1

A1

Ala

0.07 ± 0.02 a

0.13 ± 0.04 ab

0.23 ± 0.04 b

0.54 ± 0.04 c

0.37 ± 0.03 a

0.56 ± 0.03 b

0.37 ± 0.03 a

0.56 ± 0.03 b

Arg

0.12 ± 0.01 a

0.14 ± 0.02 ab

0.18 ± 0.02 b

0.15 ± 0.01 ab

0.05 ± 0.00 a

0.07 ± 0.00 a

0.06 ± 0.00 a

0.17 ± 0.05 b

Asn

0.33 ± 0.02 a

0.20 ± 0.00 a

0.63 ± 0.04 b

0.60 ± 0.08 b

0.13 ± 0.02 ab

0.14 ± 0.01 ab

0.08 ± 0.01 a

0.22 ± 0.06 b

Asp

0.30 ± 0.01 a

0.29 ± 0.05 a

0.25 ± 0.04 a

0.37 ± 0.04 a

1.21 ± 0.12 a

1.16 ± 0.04 a

1.11 ± 0.18 a

2.07 ± 0.31 b

Cys

0.51 ± 0.03 a

0.47 ± 0.05 a

1.01 ± 0.12 b

0.91 ± 0.08 b

0.21 ± 0.02 a

0.21 ± 0.03 a

0.18 ± 0.03 a

0.26 ± 0.03 a

Gln

0.32 ± 0.04 a

0.62 ± 0.07 b

0.49 ± 0.05 ab

1.65 ± 0.11 c

0.46 ± 0.04 ab

0.91 ± 0.06 b

0.43 ± 0.05 a

2.01 ± 0.28 c

Glu

0.52 ± 0.02 a

0.49 ± 0.03 a

0.47 ± 0.04 a

0.72 ± 0.02 b

2.87 ± 0.21 ab

3.07 ± 0.21 a

3.10 ± 0.21 a

5.19 ± 0.20 c

Gly

0.18 ± 0.02 a

0.17 ± 0.01 a

0.21 ± 0.02 a

0.24 ± 0.03 a

0.05 ± 0.01 ab

0.04 ± 0.00 a

0.03 ± 0.00 a

0.05 ± 0.01 b

His

0.03 ± 0.00 a

0.02 ± 0.00 a

0.06 ± 0.00 b

0.05 ± 0.01 b

0.02 ± 0.00 a

0.05 ± 0.00 ab

0.02 ± 0.00 ab

0.07 ± 0.03 b

Ile

0.12 ± 0.00 a

0.14 ± 0.00 ab

0.16 ± 0.02 b

0.20 ± 0.02 b

0.06 ± 0.00 a

0.09 ± 0.00 b

0.07 ± 0.01 a

0.11 ± 0.01 c

Leu

0.13 ± 0.01 a

0.14 ± 0.01 ab

0.18 ± 0.02 bc

0.19 ± 0.02 c

0.03 ± 0.00 a

0.06 ± 0.01 b

0.05 ± 0.00 b

0.09 ± 0.01 c

Lys

0.09 ± 0.00 b

0.11 ± 0.01 b

0.05 ± 0.01 a

0.05 ± 0.01 a

0.08 ± 0.02 a

0.10 ± 0.03 a

0.11 ± 0.02 a

0.14 ± 0.02 a

Met

0.02 ± 0.00 a

0.02 ± 0.00 a

0.03 ± 0.00 b

0.03 ± 0.00 b

0.04 ± 0.00 a

0.05 ± 0.00 a

0.04 ± 0.00 a

0.05 ± 0.00 a

Phe

0.06 ± 0.00 a

0.06 ± 0.01 a

0.07 ± 0.01 a

0.08 ± 0.01 a

0.05 ± 0.01 a

0.09 ± 0.01 b

0.06 ± 0.00 ab

0.13 ± 0.02 c

Pro

0.07 ± 0.00 a

0.09 ± 0.00 ab

0.09 ± 0.01 ab

0.10 ± 0.01 b

0.36 ± 0.02 a

0.44 ± 0.02 a

0.39 ± 0.02 a

1.01 ± 0.08 b

Ser

0.33 ± 0.02 a

0.35 ± 0.01 a

0.56 ± 0.03 b

0.90 ± 0.03 c

2.81 ± 0.11 ab

3.29 ± 0.07 b

2.13 ± 0.23 a

4.39 ± 0.42 c

Thr

0.38 ± 0.01 a

0.42 ± 0.02 a

0.87 ± 0.06 b

0.95 ± 0.08 b

0.53 ± 0.04 a

0.91 ± 0.09 b

0.40 ± 0.07 a

0.95 ± 0.15 b

Trp

0.07 ± 0.01 a

0.08 ± 0.01 a

0.09 ± 0.01 a

0.17 ± 0.02 b

0.15 ± 0.05 a

0.16 ± 0.05 a

0.12 ± 0.01 a

0.39 ± 0.04 b

Tyr

0.05 ± 0.00 a

0.06 ± 0.00 a

0.07 ± 0.01 a

0.07 ± 0.01 a

0.05 ± 0.01 a

0.08 ± 0.00 b

0.06 ± 0.00 a

0.11 ± 0.01 c

Val

0.26 ± 0.01 a

0.28 ± 0.01 ab

0.36 ± 0.04 bc

0.42 ± 0.04 c

0.23 ± 0.01 a

0.37 ± 0.01 c

0.22 ± 0.02 a

0.30 ± 0.03 b

GABA

0.50 ± 0.04 a

0.57 ± 0.05 ab

0.80 ± 0.11 bc

0.95 ± 0.11c

0.03 ± 0.01 a

0.04 ± 0.00 a

0.04 ± 0.01 a

0.09 ± 0.01 b

  1. Plants were grown with 0.5 mM or 1 mM nitrate (N0.5, N1) or ammonium (A0.5, A1) as N source. Values represent mean ± SE (n = 4). Different letters indicate statistical differences between treatments (ANOVA analysis with Duncan’s multiple comparison test, P < 0.05). Significant nitrogen source effect within each dose (t-test, p < 0.05) is highlighted in bold
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BMC Plant Biology

ISSN: 1471-2229

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