Fig. 2. (A) Three-dimensional spatial confocal images built by layer-by-layer optical scanning of Arabidopsis thaliana seedling roots stained with APMem-1 under 561 nm excitation (10.0 μM probe incubated for 5 min). (B) High-resolution image recorded for 5 min of Arabidopsis thaliana seedling roots stained with APMem-1 under 561 nm excitation and the quantitative analysis results. Scale bar = 50 μm.
