TABLE 3.
Carbohydrate levels, photosynthetic parameters, and chlorophyll content in wild-type and psc mutant plants
| Parameter | Wild type | psc green | psc chlorotic |
|---|---|---|---|
| Sucrosea | 18.54 ± 0.99 | 22.67 ± 2.13 | 43.54* ± 1.15 |
| Glucosea | 0.39 ± 0.05 | 0.43 ± 0.09 | 3.60* ± 0.16 |
| Fructosea | 0.80 ± 0.03 | 0.92 ± 0.14 | 2.18* ± 0.39 |
| Starcha | 23.65 ± 2.23 | 22.07 ± 2.45 | 41.33* ± 3.34 |
| Photosynthetic rateb | 41.78 ± 1.73 | 40.63 ± 1.30 | 1.70* ± 0.28 |
| Stomatal conductanceb | 0.196 ± 0.01 | 0.20 ± 0.01 | 0.017* ± 0.004 |
| Chlorophyll contentc | 51.3 ± 2.6 | 51.6 ± 2.6 | 16.1* ± 3.7 |
*Significantly different from wild type at P ≤ 0.05 using Student's t-test.
a
Data represent means of six samples ± the standard error. Units are mg per g fresh weight. Tissue was collected from summer nursery grown material at 8 pm.
b
Data represent means of six samples ± the standard error. Units for photosynthesis rate are μmol CO2 fixed m−2 s−1 and units for stomatal conductance measurements are μmol.
c
Chlorophyll content (N = 25) is expressed in relative units.