Table 2.
Double-bond index (DBI) of membrane lipids after cold treatments in KY 131 and DN 422. DBI = (Ʃ [N × mol % lipid])/100. Data are the means ± SD. Means denoted by the same letter do not differ signifificantly according to Tukey's test (p < 0.05)
| Lipid class | KY | DN | Relative change (RC) | |||
|---|---|---|---|---|---|---|
| Control | Cold | Control | Cold | KY | DN | |
| MGDG | 289.28±13.78b | 386.3±11.51a | 358.19±30.8a | 298.79±14.82b | 33.54 | -16.58 |
| DGDG | 115.62±13b | 150.36±6.82a | 134.22±12.54b | 147.78±1.47a | 30.05 | 10.1 |
| SQDG | 49.32±5.57a | 41.18±3.19a | 49.1±1.09a | 45.8±1.44b | -16.5 | -6.72 |
| PA | 2.26±0.24a | 1.8±0.2b | 1.75±0.07b | 1.97±0.17a | -20.35 | 12.57 |
| PC | 8.74±0.87b | 14.04±0.94a | 10.55±1.1a | 9.96±0.53a | 60.64 | -5.59 |
| PE | 16.45±1.25b | 21.86±1.52a | 17.33±1.1a | 15.88±0.82a | 32.89 | -8.37 |
| PG | 34.03±3.28b | 38.18±0.3a | 34.32±2.32a | 35.66±0.92a | 12.2 | 3.9 |
| PI | 5.45±1a | 5.66±0.65a | 3.85±0.41a | 4.2±0.33a | 3.85 | 9.09 |
| PMeOH | 0.55±0.02a | 0.55±0.03a | 0.65±0.02a | 0.64±0.04a | 0 | -1.54 |
| LPE | 0.24±0.03a | 0.29±0.02a | 0.48±0.05b | 0.64±0.05a | 20.83 | 33.33 |
| LPC | 0.27±0.02a | 0.23±0.02a | 0.37±0.04a | 0.33±0.01a | -14.81 | -10.81 |
| DG | 35.67±0.81b | 58.63±5.45a | 48.16±4.44b | 84.13±2.05a | 64.37 | 74.69 |
| TG | 10.31±0.31a | 5.12±0.39b | 5.33±0.52b | 8.24±0.15a | -50.34 | 54.6 |
| FA | 6.98±0.9a | 4.53±0.15b | 3.68±0.27a | 3.72±0.19a | -35.1 | 1.09 |
| Total | 575.17±20.72b | 728.72±18.79a | 667.97±35.63a | 657.74±13.14a | 26.7 | -1.53 |