Table 1 Arabidopsis genes encoding galactolipid biosynthetic enzymes
Enzyme | AGI code | Substrates | Subcellular localization | Mutant phenotype |
|---|---|---|---|---|
MGD1 | At4g31780 | DAG and UDP-Gal | Plastid inner envelope | Greening defect, trace level of MGDG |
MGD2 | At5g20410 | DAG and UDP-Gal | Plastid outer envelope | Normal |
MGD3 | At2g11810 | DAG and UDP-Gal | Plastid outer envelope | Normal |
SFR2 | At3g06510 | Galactoglycerolipid | Plastid outer envelope | Reduced freezing tolerance |
DGD1 | At3g11670 | MGDG and UDP-Gal | Plastid envelope | Reduced DGDG accumulation |
DGD2 | At4g00550 | MGDG and UDP-Gal | Plastid outer envelope | Normal |