TABLE 5.
Coordinated changes in gene expression that led to alternation of some key primary metabolites in Populus tomentosa under N deficiency.
| Metabolite | Log2 (DN/KK) | Gene annotation | Gene ID | Function | GO molecular function |
| D-glucose | 0.23 | dTDP-D-glucose 4,6-dehydratase | Unigene29785_All (4.38), | Biosynthesis | Oxidoreductase activity |
| Unigene33572_All (2.54) | |||||
| Galactonic acid | 0.80 | Beta-galactosidase | CL1096.Contig2_All (0.95), | Biosynthesis | Beta-galactosidase activity |
| CL1096.Contig3_All (0.95), | |||||
| CL1096.Contig4_All (0.95), CL1096.Contig5_All (1.19), | |||||
| CL1096.Contig6_All (0.95), CL1096.Contig7_All (0.12), | |||||
| CL1096.Contig8_All (0.69), CL1096.Contig9_All (0.69), | |||||
| D-fructose | 0.43 | Fructose-2,6-bisphosphatase | CL4139.Contig1_All (−1.15), | Degradation | Phosphoglycerate mutase activity |
| CL5072.Contig1_All (−0.17), | |||||
| CL5072.Contig2_All (0.03), CL5072.Contig3_All (−0.11), | |||||
| Inositol | −0.36 | Inositol oxygenase 2 | Unigene29428_All (1.07), | Degradation | Inositol oxygenase activity |
| CL1004.Contig2_All (0.01), | |||||
| D-galactose | 0.17 | Galactose mutarotase and related enzymes | CL4080.Contig1_All (−1.34), | Degradation | Aldose 1-epimerase activity |
| CL1004.Contig3_All (−0.63), | |||||
| CL1004.Contig4_All (−1.19) | |||||
| Unigene34048_All (0.10), | |||||
| Unigene34101_All (−0.48), Unigene38082_All (−0.55) |