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DLK2 transcripts are upregulated in the dark through KAI2 and PIFs. Dark adaptation upregulates DLK2 in 5-day-old dark-grown seedlings. Seeds were germinated and grown on 0.5 × MS plates with 1% sucrose. Real-time PCR was conducted on three biological replicates (n = 3, 15 seedlings in each). Asterisks represent significant differences from Col-0 (low light; mean ± SD; ANOVA, P < 0.025). Reactions were performed in quadruplicates.
