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. 2021 Jul 7;22(14):7305. doi: 10.3390/ijms22147305

Figure 1.

Figure 1

(a–d) Confocal laser microscope images of primary root tip, stained with propidium iodide, in 4 days old seedlings of A. thaliana treated for 7 days with coumarin 0 (a,c) and 100 μM (b,d). (c,d) Higher magnification of (a,b), respectively. Arabidosis RAM developmental zones: meristematic zone (MZ), the transition zone (TZ), and the elongation zone (EZ). The meristematic zone is divided into the distal meristem (DM) and the proximal meristem (PM). Moreover, in RAM, the stem cell niche (SCN) could be observed, as well as the quiescent center (QC), statoliths (ST), protodermis (P-EPI), precortex (P-COR), proendodermis (P-ENDO), and procambium (PRO-C); * first visible root hair. Scale bars: (a) 33.01; (b) 61.52; (c) 66.02; (d) 123.04 μm. N = 20.