Table 6.
Changes of AHAS activity in the mutant line K5 treated with different concentrations of tribenuron-methly (TBM)#.
| TBM (mg⋅L-1) | AHAS activity of leaves |
AHAS activity of inflorescences |
||
|---|---|---|---|---|
| Specific activity (U/mg protein) | Relative activity (%)∗ | Specific activity (U/mg protein) | Relative activity (%)∗ | |
| 0.360 ± 0.119B | 100.000 ± 13.179B | 0.715 ± 0.089A | 100.000 ± 12.479A | |
| 0.05 | 0.705 ± 0.069A | 195.774 ± 19.185A | 0.680 ± 0.083A | 98.759 ± 11.587A |
| 0.10 | 0.534 ± 0.059AB | 148.304 ± 16.517AB | 0.637 ± 0.068AB | 89.162 ± 9.535AB |
| 1.00 | 0.519 ± 0.100AB | 154.380 ± 30.551AB | 0.566 ± 0.033BC | 79.245 ± 4.654BC |
| 2.00 | 0.524 ± 0.097AB | 145.648 ± 26.895AB | 0.530 ± 0.055BC | 74.139 ± 7.688BC |
| 5.00 | 0.371 ± 0.158B | 91.991 ± 11.888B | 0.472 ± 0.101CD | 67.818 ± 14.993CD |
| 10.00 | 0.330 ± 0.168B | 91.584 ± 22.579B | 0.406 ± 0.023D | 56.802 ± 3.286D |
| 15.00 | 0.291 ± 0.022B | 80.724 ± 6.204B | 0.299 ± 0.019E | 41.828 ± 2.620E |
| 20.00 | 0.206 ± 0.053C | 57.117 ± 14.852C | 0.237 ± 0.044EF | 33.213 ± 6.094EF |
| 30.00 | 0.194 ± 0.047C | 53.977 ± 11.791C | 0.185 ± 0.042FG | 25.958 ± 5.922FG |
| 40.00 | 0.149 ± 0.032C | 41.291 ± 9.016C | 0.157 ± 0.020GH | 21.948 ± 2.647GH |
#Data in the table are expressed by mean ± SD, n = 6. Data followed by different superscript capital letter within same column means significant difference at P = 0.01 level. ∗Relative activity of AHAS was determined as the percentage of absorbance value of each sample of TBM-treated plants and the corresponding sample of the control plants (treated with 0 mg⋅L-1 of TBM).