Table 2.
Number of canker pathogens induced differentially expressed genes (DEGs) in the phloem and xylem of poplar stems.
| Treatments | Bdo_Ph vs Ctrl_Ph | Bdo_Xy vs Ctrl_Xy | Vso_Ph vs Ctrl_Ph | Vso_Xy vs Ctrl_Xy |
|---|---|---|---|---|
| Number of up-regulated genes (Nu) | 164 | 736 | 389 | 598 |
| Number of down-regulated genes (Nd) | 211 | 2,209 | 729 | 937 |
| Ratio of Nd/Nu | 1.29 | 3.00** | 2.22** | 1.57** |
| Total number of differentially expressed genes | 375 | 2,945 | 1,118 | 1,535 |
| Percentage of down-regulated genes in total (%) | 56.3 | 72.5 | 65.2 | 61.0 |
Notation: The DEGs were selected using log2(FC)≥ or ≤−1 and FDR ≤ 0.05 including those only expressed in one library, and FDR < 0.05. Asterisks indicate the number of down-regulated genes (Nd) is more than that of up-regulated genes (Nu) (Chi-square test, null hypothesis is Nd = Nu; *P < 0.05; **P < 0.01).