Figure 4. The Casparian strip structures and patterns of suberin deposition of the roots.
(A) The representative transmission electron micrographs of CS in the WT, els1 mutant, the WT and els1 mutant treated with salt stress. The transverse sections arise from the zone of 5-10mm far from root tip. 1, epidermis; 2, exodermis; 3, sclerenchyma; 4, endodermis. (B) The patterns of suberin deposition in small lateral roots of the WT and els1 mutant, which were obtained with laser confocal microscopy. Scale bar: 100μm (C) The percentage of small lateral roots of each deposition pattern. (D) Representative transverse sections from small lateral roots stained with FY088 were observed with laser confocal microscopy.