Figure 4.

ACCase activity is tightly correlated with heat tolerance.

(A) Phenotypic analysis of rare1 mutants grown on Murashige and Skoog medium supplemented with varying concentrations of malonyl-CoA lithium salt.

(B) Chlorophyll content of rare1 plants grown with malonyl-CoA supplementation. Asterisks (∗) indicate a significant difference between the WT and the rare1 mutants (∗p ≤ 0.05; ∗∗p ≤ 0.01).

(C) ACCase activity in the WT and the rare1 mutants at 22°C or 28°C.

(D) Effect of a plastid ACCase inhibitor on the phenotype of the WT under 22°C or 28°C.

(E and F) Growth phenotypes of cac3 mutants at 22°C and 28°C.