Table 2.
Related differential metabolites and the relative content identified in leaves between the nitrogen deficiency treatments and CK.
| Differential metabolites | metabolic pathway | LN-z | LN-h | LN-n |
|---|---|---|---|---|
| L-Arabinose | Pentose and glucuronate interconversions | 1.1709 | 1.2335 | 0.6721 |
| Ascorbate and aldarate metabolism | ||||
| Glycerol | Pentose and glucuronate interconversions | 2.2697 | 2.7722 | 1.6469 |
| Ribitol | Pentose and glucuronate interconversions | 0.9405 | 1.6283 | 0.1765 |
| L-Threonine | Ascorbate and aldarate metabolism | 3.9229 | 2.7810 | 4.2008 |
| Adenosine | Purine metabolism | 3.5233 | 3.4536 | 1.5008 |
| Deoxyadenosine | Purine metabolism | 18.0737 | 12.3745 | 24.5579 |
| Hypoxanthine | Purine metabolism | 0.9451 | 0.7762 | 1.4389 |
| L-Glutamate | Alanine, aspartate and glutamate metabolism | 0.7398 | 0.8032 | 1.4367 |
| Biosynthesis of plant secondary metabolites | ||||
| Vitexin | Flavone and flavonol biosynthesis | 34.1606 | 25.6962 | 22.9451 |
| Flavonoid biosynthesis | ||||
| Xanthohumol | Flavone and flavonol biosynthesis | 0.5990 | 1.0521 | 0.3456 |
| 3,5-Dimethoxy-4-hydroxy-cinnamic acid | Phenylpropanoid biosynthesis | 5.6138 | 2.6434 | 1.5430 |
| Sinapyl alcohol | Phenylpropanoid biosynthesis | 5.4348 | 5.1813 | 3.0867 |
| Dopamine | Betalain biosynthesis | 6.3209 | 20.5738 | 53.5003 |
| Biosynthesis of alkaloids derived from shikimate pathway | ||||
| L-Tryptophan | Biosynthesis of alkaloids derived from shikimate pathway | 2.2762 | 2.9887 | 1.9359 |
| Phenylpropanoid biosynthesis |