Figure 2. Fluorescence visualization of RNS/NO (stained with 4,5-diaminofluorescein diacetate, A) and ROS (stained with CellROX Deep Red Reagent, B) on freshly-prepared hand-made cross sections from petioles (shoot) and primary roots (root) in chamomile plants.

Other details are as in the Fig. 1. Additional fluorescence visualization of RNS/NO by staining with 2,3-diaminonaphthalene on freshly-prepared hand-made cross sections from primary roots (root) of chamomile plants (C): signal was transformed into pseudocolor green allowing easier comparison with Fig. 2A. Scale bar is the same as in Fig. 1.