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Effects of white light and UV-B exposure on the expression of PHR1 in wild-type and uvi1 seedlings. Six-day-old etiolated seedlings were kept in the dark, or exposed to white light or white light plus UV-B with a dose of 3.6 kJ m−2 for 6 h. Each lane of the RNA blot was loaded with 15 μg of total RNA.
