Arabidopsis Biological Resource Center

Ploidy: 2

Phenotype: Has reciprocal period defects for multiple circadian rhythms, consistent with subtly altered expression patterns of the Circadian clock-associated gene (CCA1) and the Timing of CAB Expression gene (TOC1); rising and/or falling phases of transcripts are slightly advanced compared to Col; shorter circadian period relative to Col (1.0-2.4 hours ); alters the period of CCA1 expression in blue light by 2 hours, affects the period of CCR2 expression in red and blue light to a lesser extent, but had no effect on the period of CCA1 expression in red light or of CCR2 expression in darkness; seedlings show mild long-hypocotyl phenotype when grown under constant red or blue light at a range of fluence rates; circadian effects are complementary, light-dependent and inconsistent with the serial activation of PRR genes.