Fig. 3 in 3-O-glycosylation of kaempferol restricts the supply of the benzenoid precursor of ubiquinone (Coenzyme Q) in Arabidopsis thaliana

Fig. 3. Total ubiquinone content and rate of de novo ubiquinone biosynthesis in A. thaliana. A) Total ubiquinone-9 content in the rosette leaves of 3-week-old wild-type, ugt78d1, ugt78d2, ugt78d3 and ugt78d1/ugt78d2 plants grown on soil. B) Relative ubiquinone-9- [Ring-13C] labeling in the leaves of axenically 6 grown wild-type, ugt78d1, ugt78d2, ugt78d3 and ugt78d1/ugt78d2 plants fed for 3h with 250 μM of phenylalanine-[Ring- 13C]. Data represent the means of 4–6 6 biological replicates ± SE. P values from an analysis of variance between each mutant and the wild-type reference are indicated above the bars. Asterisks indicate significant differences from the wild type as determined by variance analysis (P <α = 0.1).