Table 2. Mass Composition and Fatty Acid Flux Sharing between the Two Glycerolipid Pathways in A. lentiformis Plants Grown at 23°C and 43°C.
| Mass of Fatty Acid (mol/1000 mol)a |
sn-2 Position (%)b |
Fatty Acid Entering Prokaryotic Pathway (mol/1000 mol Fatty Acid) | Fatty Acid Entering Eukaryotic Pathway (mol/1000 mol Fatty Acid) | ||
|---|---|---|---|---|---|
| C16 | C18 | ||||
| MGDG | |||||
| 23°C | 419 | 25 | 75 | 107 | 313 |
| 43°C | 359 | 9 | 91 | 33 | 326 |
| DGDG | |||||
| 23°C | 217 | 22 | 78 | 47 | 169 |
| 43°C | 260 | 16 | 84 | 42 | 218 |
| PC | |||||
| 23°C | 148 | 4 | 96 | 6 | 142 |
| 43°C | 164 | 4 | 96 | 6 | 158 |
| PG | |||||
| 23°C | 89 | 94 | 6 | 84 | 5 |
| 43°C | 70 | 94 | 6 | 66 | 4 |
| PE | |||||
| 23°C | 68 | 0 | 100 | 0 | 68 |
| 43°C | 68 | 0 | 100 | 0 | 68 |
| PI | |||||
| 23°C | 24 | 0 | 100 | 0 | 24 |
| 43°C | 41 | 0 | 100 | 0 | 41 |
| SQDG | |||||
| 23°C | 36 | 100 | 0 | 36 | 0 |
| 43°C | 37 | 100 | 0 | 37 | 0 |
| Total | |||||
| 23°C | 1000 | 279 | 721 | ||
| 43°C | 1000 | 185 | 815 | ||
Data were calculated based on results of Supplemental Table 2 and Figure 3 according to Browse et al. (1986) and Shen et al. (2010). C16 represents the sum of 16:0, 16:l, 16:2, and 16:3; C18 represents the sum of 18:0, 18:1, 18:2, and 18:3.
a
An original input of 1000 mole of fatty acids synthesized in the chloroplast as acyl-ACP species.
b
Each lipid species was divided between the prokaryotic and eukaryotic pathway on the basis of C16 content at the sn-2 position.