Table I.
Pigment composition from both thylakoids and leaves of V. major grown either in GCs or OD under natural sunlight
| Pigment |
V. major from GCs
|
V. major from OD
|
||||
|---|---|---|---|---|---|---|
| Control | Stress | Recovery | Control | Stress | Recovery | |
| mol/100 mol Chl a | ||||||
| Chl b | 39.8 (38.5) | 39.1 (38.9) | 37.1 (38.4) | 39.1 (34.4) | 40.1 (42.0) | 38.4 (35.2) |
| Neoxanthin | 5.5 (5.6) | 5.0 (4.8) | 5.3 (5.7) | 5.9 (5.9) | 6.3 (5.9) | 6.1 (5.6) |
| Lutein | 18.0 (18.3) | 21.0 (23.6) | 19.4 (19.6) | 18.8 (18.8) | 21.8 (21.7) | 20.1 (19.6) |
| β-Carotene | 6.2 | 5.8 | 5.8 | 6.4 | 6.8 | 6.4 |
| V | 4.5 (4.4) | 1.8 (2.4) | 2.2 (2.3) | 9.1 (9.6) | 2.9 (3.5) | 4.3 (4.6) |
| A | 0 (0) | 1.2 (1.4) | 1.3 (1.3) | 0 (0) | 2.6 (2.9) | 2.5 (3.2) |
| Z | 0 (0) | 4.2 (5.2) | 3.5 (3.6) | 0 (0) | 5.4 (5.3) | 3.2 (3.8) |
| VAZ | 4.5 (4.4) | 7.2 (9.0) | 7.0 (7.2) | 9.1 (9.6) | 10.9 (11.8) | 10.1 (11.7) |
| (Z+A)/(VAZ) | 0 (0) | 0.75 (0.73) | 0.69 (0.68) | 0 (0) | 0.74 (0.70) | 0.56 (0.60) |
Leaves were collected following 12 h of darkness (control), at the end of the photoinhibitory treatment (stress), or following 2.5 h of recovery at low light (recovery). The leaf data are in parentheses, except β-carotene for which the leaf data are not available. See Methods for growth conditions and stress treatments.