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Expression of PHT4;1 and PHT4;1-1 Is Light-Regulated.
25-day-old plants grown in a chamber with a 16-h light/8-h dark cycle were kept in the same condition or dark-treated for 24 h. Leaves were harvested for total RNA extraction followed by northern blotting. rRNA was used as a loading control. These experiments were repeated two times, with similar results.
