Figure 9.

Molecular Analysis of csa1 and CSA1 Expression.

(A) PHYB levels detected by monoclonal antibodies are normal in csa1 seedlings grown under white light.

(B) HAT4 expression detected by RT-PCR is enhanced in csa1 compared with wild-type seedlings grown under white light and exposed to EOD red light.

(C) HFR1 expression determined by RT-PCR is enhanced in csa1 compared with wild-type seedlings grown under white light.

(D) CSA1 expression detected by RT-PCR is enhanced in etiolated wild-type seedlings exposed for 24 h to continuous red light compared with plants kept in darkness (D).