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(A) GC-MS analysis of ACC synthase activity in 6 d old whole roots from etiolated sunflower seedlings grown in presence of distilled water (control) or 3 µM each of GR24, Fl, NPA. (B) CLSM imaging of PIN1 protein distribution in the seedling roots and their regulation by SL (GR24), fluridone (Fl) and NPA. Magnification 20X; scale bar = 100 µm.
