Table 2.
Analysis of Room Temperature Chlorophyll Fluorescence
| Wild Type | koCP24 | koCP26 | koCP24/CP26 | |
|---|---|---|---|---|
| F0 | 451 ± 40 | 646 ± 64* | 508 ± 47 | 695 ± 53* |
| Fv/Fm | 0.83 ± 0.02 | 0.71 ± 0.03* | 0.80 ± 0.01 | 0.73 ± 0.03* |
| tm (ms) | 213.1 ± 25.8 | 1042.3 ± 113.7* | 192.0 ± 24.9 | 218.5 ± 30.7 |
| Sm/tm | 0.103 ± 0.008 | 0.0328 ± 0.0023* | 0.114 ± 0.015 | 0.112 ± 0.013 |
| T2/3 (ms) | 388 ± 68 | 423 ± 71* | 371 ± 42 | 356 ± 43 |
Photosynthetic parameters were provided by analysis of chlorophyll fluorescence measured with green light (7 μmol m−2 s−1 or 1100 μmol m−2 s−1; see Methods for details) on leaves of the wild type and mutants. The two-thirds time of the fluorescence rise (T2/3) was measured in 3.0 10−5 M DCMU infiltrated leaves using a flash of green light (7 μmol m−2 s−1, 8 s). The T2/3 parameter is inversely related to the incident photon flux and is an index of the functional antenna size of PSII. Significantly different values with respect to the wild type are marked with an asterisk (P > 0.05).