Table 1. Gaussian Parameters for the Subband Decomposition of Low Temperature (77K) Chlorophyll Fluorescence Emission Spectra of Two Chlamydomonas Strains (1690 and UWO241).
C. reinhardtii and C lamydomonas sp. UWO241 were grown under their respective optimal growth temperatures in either the absence (control) or presence of DCMU and DBMIB. The percentage areas of the spectral forms have been calculated from the total area given by the sum of all bands. The FWHM of each band is the sum of the left and right half width at half maximum values. PSII/PSI represents the ratio between the areas of PSII related peaks (λ1, λ2, and λ3) and the area of the PSI peak (λ4).
| Parameters | 1690 | UWO241 | ||||
|---|---|---|---|---|---|---|
| Control | + DCMU | + DBMIB | Control | + DCMU | + DBMIB | |
| 1 λ max | 683.4 | 683.2 | 673.7 | – | – | 683.1 |
| FWHM | 10.89 | 8.56 | 2.00 | – | – | 10.65 |
| Area % | 18.24 | 9.54 | 0.02 | – | – | 21.60 |
| 2 λ max | 685.9 | 685.6 | 684.9 | 683.9 | 683.0 | 689.2 |
| FWHM | 5.18 | 12.32 | 13.01 | 10.26 | 10.53 | 3.08 |
| Area % | 3.87 | 20.71 | 15.40 | 28.43 | 29.53 | 0.06 |
| 3 λ max | 693.3 | 696.7 | 696.6 | 695.5 | 694.6 | 695.3 |
| FWHM | 10.85 | 9.19 | 9.10 | 12.45 | 13.71 | 13.17 |
| Area % | 10.23 | 4.22 | 2.35 | 21.86 | 27.95 | 17.74 |
| 4 λ max | 710.5 | 709.9 | 711.4 | 705.9 | 707.1 | 707.0 |
| FWHM | 23.83 | 25.63 | 25.14 | 26.84 | 24.54 | 25.81 |
| Area % | 43.38 | 44.38 | 50.51 | 33.91 | 25.82 | 42.36 |
| 5 λ max | 728.7 | 731.8 | 722.9 | 739.7 | 737.3 | 730.5 |
| FWHM | 47.26 | 44.50 | 49.0 | 42.44 | 43.96 | 42.28 |
| Area % | 24.27 | 21.16 | 31.69 | 15.73 | 16.59 | 18.22 |
| PSII/PSI | 0.745 | 0.776 | 0.351 | 1.480 | 2.229 | 0.930 |