Abstract
Photosynthetic genes are considered to be transcribed actively in the light condition whereas not in the dark. To search the sequential accumulation patterns of the transcripts of photosynthetic genes, we isolated the transcripts of Cyanidioschyzon merolae 10D in 12h-light and 12h-dark condition for every two or four hours, and measured the amount of transcripts by northern hybridization analysis. The transcripts of psbA and psbB-T decreased gradually in the dark period, and suddenly increased in the light period. The transcripts of psbO, psbU and psbC decreased suddenly in the dark period but gradually recovered. That of psbA was constant in all the period. We are now analyzing other kinds of transcripts of photosynthetic genes. The grouping of genes by the transcriptional patterns under light and dark conditions are discussed.
