Table 2.
Comparison of the ratios of concentrations of phosphorous compounds in soybean roots and nodules treated with 5 mM of nitrate for 24 h and the control plants.
| Phosphorous Compound | Roots | Nodules |
|---|---|---|
| ATP | 3.9 ** | 0.7 |
| ADP | 2.9 * | 0.9 |
| GMP | 2.8 ** | N.A. |
| CDP | 2.4 | 0.8 |
| UDP | 2.1 * | 0.9 |
| CTP | 2.1 * | N.A. |
| Sedoheptulose 7-phosphate | 2.5 ** | 0.7 * |
| Ribulose 5-phosphate | 2.2 *** | 0.8 |
| NAD+ | 2.2 * | 0.9 |
| Ribose 5-phosphate | 2.0 *** | 0.8 |
| 6-Phosphogluconic acid | 1.9 *** | 0.8 ** |
| Spermidine | 1.8 * | 1.2 |
| O-Acetylserine | 1.7 * | N.A. |
| AMP | 1.6 * | 1.3 |
| UMP | 1.6 * | 0.8 |
| CMP | 1.5 * | 1.0 |
| UDP-glucuronic acid | 1.4 * | 0.7 |
| Phosphoenolpyruvic acid | 1.3 * | 0.9 |
| Glucose 1-phosphate | 1.2 * | 0.8 * |
| Glucose 6-phosphate | 1.2 * | 1.0 |
| 3-Phosphoglyceric acid | 1.2 * | 0.9 |
Notes: The symbol (*, **, ***) after each number indicates the statistical significance of the metabolite concentration between the nitrate treatment and control at p < 0.05, 0.01, 0.001 levels by Welch’s t-test. N.A.: data is not available. Red color stands for Ratio (Nitrate/Control) > 3; Orange stands for 2 ≤ Ratio (Nitrate/Control) ≤ 3; Yellow stands for 1 ≤ Ratio (Nitrate/Control) < 2; Blue stands for Ratio (Nitrate/Control) < 1.