Table 2.
Transcript abundance of cellulose and lignin biosynthetic genes in hybrid poplar wood (LS) cultivated for 46 d under control or ozone (300 nl l−1) conditions
| Gene | Tension wood |
Opposite wood |
||
| Control | Ozone, 300 nl l−1 | Control | Ozone, 300 nl l−1 | |
| Cellulose biosynthesis | ||||
| SUS1 | 1.50±0.35 | 0.41±0.14 | 1±0.16 | 0.32±0.05 |
| SUS2 | 1.64±0.22 | 0.47±0.16 | 1±0.23 | 0.34±0.05 |
| UGP1 | 1.22±0.16 | 0.48±0.27 | 1±0.37 | 0.82±0.03 |
| UGP2 | 2.28±0.71 | 1.59±0.42 | 1±0.34 | 1.54±0.18 |
| CesA4 | 0.89±0.18 | 0.56±0.19 | 1±0.13 | 0.64±0.18 |
| CesA5 | 0.81±0.03 | 0.60±0.16 | 1±0.22 | 0.77±0.07 |
| CesA7 | 1.59±0.17 | 0.61±0.27 | 1±0.15 | 0.46±0.18 |
| CesA8 | 0.95±0.26 | 0.31±0.13 | 1±0.06 | 0.38±0.09 |
| CesA13 | 0.76±0.13 | 0.82±0.09 | 1±0.19 | 0.85±0.1 |
| CesA17 | 0.85±0.15 | 0.46±0.16 | 1±0.11 | 0.55±0.1 |
| CesA18 | 2.06±0.47 | 0.82±0.37 | 1±0.13 | 0.43±0.11 |
| Lignin biosynthesis | ||||
| PAL1 | 0.47±0.19 | 0.37±0.06 | 1±0.27 | 0.55±0.03 |
| CCR2 | 0.84±0.13 | 0.56±0.1 | 1±0.07 | 0.56±0.05 |
| CAD1 | 1.46±0.31 | 0.64±0.12 | 1±0.31 | 0.60±0.07 |
Transcript levels were normalized and expressed as fold changes compared with values of opposite wood in control conditions. Data are means ±SD of three biological replicates.