Fig. 2

Microscopy characterization of leaf ultrastructure of rapeseed plants under the control and salt conditions. a-d Low-magnification view (a, b) and close-up images (c, d) of leaf trichomes. (e-f) Mastoid morphology on the surface of trichomes. g-j Low-magnification view (g, h) and morphology of wax coats on leaf surfaces (i, j). k-l Close-up images of stoma. m-p Low-magnification (m, n) and close-up (o, p) view of chloroplasts along plasma membranes and cell morphologies. Uniform rapeseed plants after 7-day seed germination were cultivated under NaCl-free (control) for 10 days, and then they were transferred to the solution containing 200 mM NaCl for 5 days. The trichomes, mastoids, stoma, cell walls, chloroplasts, and starch granules are indicated by arrows, and the plasmolysis is denoted by an asterisk. The opening of the stoma is indicated by dashed circles