Fig. 1. Suppression of FRI-mediated late flowering by mutations in fes1. (A) Col FRI (left) and fes1-1 (right) grown in long days. The only observable phenotype associated with fes1 lesions is an inability to delay flowering. (B) Total leaf numbers when grown in both inductive (white bars) and non-inductive (black bars) photoperiods. fes1 mutants have a similar flowering-time phenotype to flc-3 in both conditions tested. fes1 mutants do not flower early in non-inductive photoperiods, unlike flm and maf2 mutants, suggesting that the suppression of late-flowering may be FLC specific. Error bars represent s.d. (C) fes1-2 lesions reduce steady-state levels of FLC mRNA.