Spiral cells with external thickened anticlinal walls and thin periclinal
This process can be identified by the thickening of the cell wall at the periclinal
and anticlinal divisions of the epidermal cells stained light-blue through the reaction with Toluidine blue O (Figures 1A-F and 2A-F).
After the examination of each species, measurements were done forseed shape, color, size, epidermal cell shape, anticlinal cell wall, periclinal
In both cultivars, the thickening of the periclinal
and anticlinal walls of the endoderm cells presented a noticeable decrease in the more advanced stages of the DPS (Figure 1M, IN, lO, IP).
No entanto, embora possa nao ser significativo para o orgao folha como um todo, e conhecido que algumas plantas sob estresse, inclusive hidrico, possam aumentar a espessura da parede periclinal
externa da epiderme e cuticula (ROCAS; SCARANO; BARROS, 2001; WALDHOFF, 2003), provavelmente como uma forma de reduzir a transpiracao cuticular (LARCHER, 2000).
although showing a definite pitting due to the raised anticlinal walls and depressed lumina of the cells (this last character is displayed only by fossil materials as recent achenes tend to keep intact periclinal
walls and the inner silica bodies, which are damaged and/or missing in the fossils; Jimenez-Mejias & Martinetto, 2013; Fig.
The druses are projected through the external periclinal
wall of the epidermis, giving the leaf a glandular appearance in the SEM (Figure 2K).
In the cross-section, epidermis is one-layered and cells with a thin and flat outer periclinal
wall occur on both surfaces.
The primary parietal cells divided repeatedly through periclinal
and anticlinal divisions to form the subepidermal endothecium and two middle layers (Fig.
The Jurassic periclinal
closure of the Aralar anticline has a complicated litho-stratigraphic sequence with various types of limestone, marl, calcareous sandstone, siliceous and micro-conglomeratic sandstone, conglomerates and lutite.
The greatest of these outcrops is located close to the southern periclinal
closure of this large anticline, near to the CVF (Figs.
divisions of sporogenous cells resulted in the formation of pollen mother cells in S.