(A) Wild type (WT), syp22-1, doc1-1, and doc1-1 syp22-1 plants were grown in CL for 30 days at 23°C. (B) doc1-1 syp22-1 plants grown in CL for 41 days at 23°C. (C) Numbers of rosette leaves (blue) and expression levels of FLC (red) are shown for wild type (WT), syp22-1, doc1-1, and doc1-1syp22-1 plants grown in CL at 23°C. Results are presented as means ±S.D. (n = 8 plants, 3 experiments of qRT-PCR). Results of qRT-PCR of FLC were normalized by the expression of TUA3. (D) The elevated expression level of FLC in syp22-1 was suppressed by the ara6-1 mutation. Expression levels of FLC in 14-day-old wild type (WT), syp22-1, and ara6-1syp22-1 seedlings were examined by qRT-PCR. Results are presented as means ±S.D. (n = 5 experiments).