Figure 6.

NRT1.1 represses DR5::VENUS expression in LRPs in NO₃⁻-free medium. VENUS localization in LRP of wild-type and chl1-5 seedlings grown for 10 d on basal medium without N (left) or supplemented with 0.5 mm Gln (middle) or 1 mm NO₃⁻ (right). Each line corresponds to a LRP developmental stage from initiation (I) to emergence (VIII) as described by Malamy and Benfey (1997). The asterisk visualizes the location of the LRP. The pictures shown are representative of >20 primordia from >10 plants of two independent experiments. White bar represents 50 μm.