Table 2.
Three clusters of B. diazoefficiens metabolites that show differential abundance during soybean nodule development (13, 21, 31 dpi).
| Metabolites Specific for the Indicated Time Point a | ID a | log2 13 vs 21 b | log2 13 vs 31 b | log2 21 vs 31 b |
|---|---|---|---|---|
| 13 dpi | ||||
| Tryptophan | C00078 | 2.4 | 2.0 | nr |
| Cyclohexylformamide | C11519 | 0.9 | 1.2 | nr |
| Glutamyl-taurine | C05844 | 0.9 | 0.9 | nr |
| Oxalate | C00209 | 0.6 | 0.7 | nr |
| Fumarate | C00122 | 0.6 | 1.3 | ns |
| Phosphoenolpyruvate | C00074 | 0.5 | 0.8 | nr |
| 21 dpi | ||||
| Trehalose 6-phosphate | C00689 | −1.2 | −0.3 | 0.9 |
| 31 dpi | ||||
| Glucosamine 6-phosphate | C00352 | nr | −1.2 | −0.8 |
| Indole-3-acetate | C00954 | nr | −1.0 | −0.7 |
| Isopropylmaleate | C02631 | nr | −0.8 | −0.8 |
| AMP | C00020 | nr | −0.7 | −0.7 |
a: Metabolite name and ID according to the Kyoto Encyclopedia of Genes and Genomes (KEGG) database; b: Log2 fold change (FC) of metabolite level, comparing two developmental stages. nr, not regulated. ns, regulated but not significantly. Metabolites indicated in bold face significantly accumulate in nodules from all four plants versus all roots.