Date of this Version
THE JOURNAL OF BIOLOGICAL CHEMISTRY VOL. 288, NO. 38, pp. 27594–27606
Background: Plastid isoforms of solanesyl-diphosphate synthase catalyze the elongation of the prenyl side chain of plastoquinone-9.
Results: Corresponding mutants display lower levels of plastoquinone-9 and plastochromanol-8 and display intact levels of vitamin E.
Conclusion: Plastochromanol-8 originates from a subfraction of non-photoactive plastoquinol-9 and is not essential for seed longevity.
Significance: Viable plastoquinone-9 mutants are invaluable tools for understanding plastid metabolism.