Table II.
Amounts of sorbitol in the leaves of S5C tobacco transformants
| Sorbitol
|
||||
|---|---|---|---|---|
| Leaf No. | Plant no. 1 | Plant no. 2 | Plant no. 3 | Plant no. 4 |
| μmol g−1 fresh wt | ||||
| 1 | 9.4 | 16.5+ | 10.0 | 4.4 |
| 2 | 33.7+ | 20.6+ | 12.2 | 3.6 |
| 3 | 27.8+ | 14.8+ | 8.2 | 1.5 |
| 4 | 1.3 | 6.0+ | 7.3+ | 1.5 |
| 5 | 7.4+ | 3.2+ | 3.1+ | 1.0 |
Lesion formation is indicated by +. Leaves were numbered beginning at the top of the plant, counting as leaf number 1 a leaf with an area equivalent to approximately 10 to 20% of the leaf area of the first fully developed leaf (leaf no. 5). The plants used were 10 weeks old. Data from a single experiment are shown, because the absolute values in different experiments varied, although the same relative differences were seen in all experiments (n > 5).