Fig. 3.

Levels of α- and γ-tocopherol in wild type (Col-0) and vte4 and vte1 mutants (see key) of A. thaliana grown under various P availabilities (+P, C, –P1 and –P2 represent various P concentrations in the nutrient solution; see Materials and methods for details). Data represent the mean ± s.e. of n = 5 individuals. Significant differences between treatments, genotypes and their interaction (treatment × genotype) were analysed by two-way ANOVA (P ≤ 0·05). Note that both tocopherols were absent in the vte1 mutant, while the vte4 mutant accumulated γ- instead of α-tocopherol.