Journal: Plant cell reports
Article Title: Myosin XI coordinates ABA-induced stomatal closure via microtubule stability and ROS synthesis in drought-stressed Arabidopsis.
doi: 10.1007/s00299-025-03538-2
Figure Lengend Snippet: Fig. 5 Myosin XI facilitates ABA-induced stomatal closure. A Rep- resentative images of stomata from detached leaves of WT, 2ko, and 3ko after a 2-h treatment with stomatal opening buffer (Mock), fol- lowed by a 30-min treatment with ABA (5 μM) (+ ABA). Scale bar, 25 μm. B Quantification of stomatal apertures in detached leaves of WT, 2ko, and 3ko following a 2-h treatment with stomatal opening buffer (Mock), then a 30-min treatment with ABA (5 μM) (+ ABA). Data represent mean ± SD (n = 40; ***p < 0.001). C ROS produc- tion in guard cells was detected using the ROS-sensitive fluorescent dye H2DCF-DA. Scale bar, 10 μm. D Quantification of relative fluo- rescence in guard cells of WT, 2ko, and 3ko plants after a 2-h treat- ment with stomatal opening buffer (Mock), followed by a 1-h treat- ment with ABA (30 μM) (+ ABA). Data represent mean ± SD (n = 14; *p < 0.05, **p < 0.01). E cMTs labeled with GFP-TUB6 in guard cells of WT and 3ko were visualized using confocal microscopy. Scale bar, 10 μm. F Quantification of cMTs densities in WT and 3ko following a 2-h treatment with stomatal opening buffer (Mock), then a 1-h treatment with ABA (20 μM) (+ ABA). Data represent mean ± SD (n = 8; *p < 0.05, **p < 0.01)
Article Snippet: 2',7'-dichlorodihydrofluorescein diacetate (H2DCF-DA) staining assay (MedChemExpress, NJ, USA) was employed to visualize H2O2 generation in guard cells, following a previously established method (Zhou et al. 2013).
Techniques: Labeling, Confocal Microscopy