Fig. 2.

The CBF pathway is regulated by photoperiod. (A) WT plants were grown under SD or LD conditions and the transcript levels for CBF2 were determined at the indicated times. (B) Plants were grown under SD or LD conditions, further grown under the same photoperiod, or shifted from SD to LD or LD to SD for the indicated number of days, and the transcript levels for CBF2 were determined at ZT8. (C) Plants were grown as in B and the transcript levels for the indicated genes were determined at ZT8 (photoperiod shift was for 7 d). The results are mean values from three independent experiments (error bars indicate SEM).