Table 1.
Pigment Composition of Thylakoid Membranes Isolated from Wild-Type and npq Mutants Dark Adapted (Lanes 1 to 6) and after Light Stress (1200 μE m−2 s−1, 15 min) on the Wild-Type Genotype (Lane 7)
| Sample | Neo | Viola | Lute | Zea | Anthera | β-Car | Chlorophyll b | Chlorophyll a |
|---|---|---|---|---|---|---|---|---|
| Wild type | 3.4 | 2.8 | 8.0 | nd | nd | 5.4 | 22.4 | 77.6 |
| npq1 | 4.1 | 2.5 | 9.4 | nd | nd | 5.8 | 20.9 | 79.1 |
| npq2 | nd | nd | 8.4 | 10.2 | nd | 5.3 | 22.1 | 77.9 |
| npq4 | 3.7 | 2.3 | 9.1 | nd | nd | 7.6 | 22.0 | 78.0 |
| npq1 npq4 | 4.3 | 3.5 | 10.0 | nd | nd | 5.8 | 22.1 | 77.9 |
| npq2 npq4 | nd | nd | 11.1 | 12.0 | nd | 6.1 | 21.0 | 79.0 |
| Wild type/light | 4.2 | 1.4 | 8.3 | 2.3 | 0.4 | 5.7 | 24.0 | 76.0 |
The data are normalized to 100 chlorophyll a + b molecules. β-Car, β-carotene; nd, not detectable. In all cases, error was lower than 4%.