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.