Table I. Chlorophyll a/b ratios and lipid composition in grana-containing and agranal tissues, and mol % of chloroplast lipids.
Chlorophyll content was determined spectroscopically according to Porra et al. (1989). Lipid content was quantified by two-dimensional TLC. Data represent means with sd from three to six independent measurements.
| Sample | Chlorophyll a/b Ratio | Lipid-Chlorophyll Ratio | MGDG / DGDG / SQDG / PG |
|---|---|---|---|
| mol mol−1 | mol % | ||
| Arabidopsis leaves | 2.8 ± 0.3 | 1.66 ± 0.12 | 46 ± 5 / 24 ± 2 / 8 ± 1 / 24 ± 3 |
| Maize M | 3.5 ± 0.4 | 1.51 ± 0.13 | 45 ± 5 / 36 ± 3 / 14 ± 2 / 5 ± 1 |
| Maize BS | 5.7 ± 0.7 | 3.93 ± 0.19 | 46 ± 7 / 42 ± 2 / 5 ± 2 / 8 ± 4 |
| Sorghum M | 2.9 ± 0.4 | 2.01 ± 0.17 | 43 ± 10 / 35 ± 3 / 10 ± 7 / 13 ± 4 |
| Sorghum BS | 7.8 ± 2.0 | 3.36 ± 0.24 | 44 ± 2 / 37 ± 3 / 7 ± 2 / 12 ± 2 |