Figure 8.

Role of phyA and cry1 in the regulation of CRY2b expression by blue light. Seven-day-old wild-type, phyA, cry1, and phyA cry1 seedlings were transferred from complete darkness to continuous blue light at 20 μmol m⁻² s⁻¹. Whole shoots were harvested at various times after transfer, and expression of CRY2b was monitored by quantitative reverse transcription-PCR. Expression was also monitored in plants kept in darkness for a further 24 h (24D). Values were normalized for actin transcript level and are expressed as mean ± se, n = 2 to 3.