Table IV.
Vitamin E activity in wild-type, single, and double overexpressers
| Line | Vitamin E Activity
|
|
|---|---|---|
| Leaves | Seeds | |
| mg α-TE 100 g−1 tissue | ||
| Wild type | 0.75 | 3.9 |
| 35S::HPT1 | 1.81 | 5.2 |
| 35S::γ-TMT | 0.87 | 35.6 |
| 35S::HPT1/35S::γ-TMT | 2.39 | 47.4 |
Vitamin E activity was calculated for each line using the absolute levels of individual tocopherols from Figures 4 and 5 and the relative biological activities of R,R,R-tocopherols. One milligram of α-, β-, γ-, and δ-tocopherol corresponds to 1, 0.5, 0.1, and 0.03 mg of α-TE, respectively (Food and Nutrition Board, Institute of Medicine, 2000).