Table 3.
Concentration and half-cell reduction potential (EGSSG/2GSH) of the glutathione pool in low-dormancy (LD) and high-dormancy (HD) seeds over 42 d dark stratification at 20 °C
| [GSH] (nmol g−1 DW) |
[GSSG] (nmol g−1 DW) |
EGSSG/2GSH (mV) |
||||
| Time (d) | LD | HD | LD | HD | LD | HD |
| 0 | 25±3 c | 31±2 d | 37±2 b* | 29±2 a | –156±4 a | –169±4 b* |
| 7 | 101±5 a | 116±8 a | 58±3 a* | 20±2 a | –163±4 a | –173±4 b |
| 21 | 64±9 b | 56±3 c | 31±5 b | 19±3 a | –147±7 a | –144±3 a |
| 42 | 52±14 b,c | 84±8 b | 39±7 b | 28±3 a | –142±8 a | –155±5 a |
The concentration of GSSG is expressed as GSH equivalents. Values are means ±SE (n=4); different letters within columns denote a significant difference (P <0.05) between time points. An asterisk denotes a significant difference between LD and HD populations for the appropriate parameter.