Distribution of the different S states (% of the total PSII amount) in EPR samples after the application of 0–6 turnover flashes given at a flash frequency of 1.25 Hz at −10 °C and 10 °Ca.
| Temp. | Fl. no. | S1 | S2 | S3 | S0 | S1(2nd) | S2(2nd) | S3(2nd) | Total |
|---|---|---|---|---|---|---|---|---|---|
| −10 °C | 0 | 100 | 100 | ||||||
| 1 | 100 | 100 | |||||||
| 2 | 38 ± 2 | 62 ± 1 | 100 | ||||||
| 3 | 18 ± 1 | 30 ± 1 | 52 ± 1 | 100 | |||||
| 4 | 13 ± 1 | 12 ± 1 | 32 ± 1 | 43 ± 1 | 100 | ||||
| 5 | 5 ± 1 | 15 ± 1 | 25 ± 3 | 54 ± 2 | 99 | ||||
| 6 | 12 ± 1 | 5 ± 1 | 42 ± 2 | 39 ± 1 | 98 | ||||
| 10 °C | 0 | 100 | 100 | ||||||
| 1 | 3 ± 1 | 97 ± 1 | 100 | ||||||
| 2 | 21 ± 1 | 79 ± 1 | 100 | ||||||
| 3 | 4 ± 1 | 21 ± 1 | 75 ± 1 | 100 | |||||
| 4 | 3 ± 1 | 6 ± 1 | 20 ± 2 | 70 ± 1 | 99 | ||||
| 5 | 3 ± 1 | 9 ± 2 | 19 ± 1 | 70 ± 1 | 101 | ||||
| 6 | 4 ± 1 | 8 ± 1 | 33 ± 1 | 56 ± 1 | 101 |
a
The fraction of the Si state was determined from the EPR spectra as described in the text and in ref. 40.