Table 1.
Fatty acid composition (% of total) of total polar lipids (PL) and SQDG in wild-type (Wt) and SO RNA interference mutants (Ri) plants grown under normal growth conditions (0 day) and after being exposed to eleven days of extended dark stress (11 day) *.
| Lipids | Genotype | Time in Dark (d) | 16:0 | 16:1 | 16:1Δ3t | 16:2 | 16:3 n-3 | 18:0 | 18:1 n-9 | 18:2 n-6 | 18:3 n-3 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| PL | Wt | 0 | 20.1 Aa | 2.1 Aa | 1.4 Aa | 0.6 Aa | 6.0 Aa | 2.9 Ba | 2.6 Aa | 25.2 Aa | 39.1 Ba |
| 11 | 21.4 Aa | 3.7 Aa | 1.2 Ab | 0.7 Aa | 6.4 Ab | 4.0 Aa | 1.4 Ba | 14.9 Ba | 46.3 Aa | ||
| Ri | 0 | 19.3 Aa | 2.8 Aa | 1.6 Aa | 0.7 Aa | 6.4 Ba | 2.7 Ba | 3.0 Aa | 22.0 Ab | 41.5 Ba | |
| 11 | 19.4 Aa | 4.0 Aa | 1.9 Aa | 0.5 Aa | 7.9 Aa | 3.3 Ab | 1.5 Ba | 13.6 Ba | 47.9 Aa | ||
| SQDG | Wt | 0 | 39.5 Bb | 2.1 Aa | -------- | 0.4 Aa | 0.7 Aa | 9.4 Aa | 18.9 Aa | 9.2 Ab | 19.8 Bb |
| 11 | 43.5 Aa | 1.3 Aa | -------- | 0.1 Aa | 0.9 Aa | 5.4 Ba | 11.7 Ba | 7.6 Bb | 29.5 Aa | ||
| Ri | 0 | 42.8 Ba | 1.9 Aa | -------- | 0.1 Aa | 0.6 Aa | 4.6 Ab | 8.7 Ab | 17.5 Aa | 23.8 Ba | |
| 11 | 46.5 Aa | 3.1 Aa | -------- | 0.0 Aa | 0.7 Aa | 3.8 Ba | 1.9 Bb | 12.5 Aa | 31.5 Aa |
*. Abbreviations are: Sulfoquinovosyl diacylglycerols (SQDG); RNA interference (Ri). The values denoted with different letters are significantly different according to the Turkey-Kramer HSD test (JMP 8.0 software, [37]; p < 0.05, (n = 3 experiments). Different lower case letters indicate differences between SO mutant and wild-type plants at the same treatment. Different upper case letters indicate significant differences within the plant genotypes in response to treatment. The data for SO-compromised plants represent the mean for SO Ri 131 and SO Ri 421 mutants.