exodermis


Also found in: Medical.

exodermis

[‚ek·sō′dər·məs]
(botany)
References in periodicals archive ?
1999) has described such increase in root exodermis as an aegis as well as a factor controlling radial flow of water along with reducing water loss.
Considering that these authors also found only the exodermis in those species, this aspect deserves embryological studies of the aquatic roots.
The root primary growth (Figure 3A and B) shows irregular epidermis with thin-wall cells and unicellular hairs; cortex with unilateral or bisseriate exodermis of suberized wall cells, loose parenchymatic tissue with secretory ducts, and endodermis with Casparian strips; and central cylinder with parenchymatous uniseriate pericycle, phloem strands alternating with an equal number of xylem strands, provided with six to ten protoxylematic poles (polyarcroot) and parenchymatous pith.
Like endodermis the exodermis also has the properties of the apoplastic barrier but it is differentiated in sub epidermal layer of cortex periphery.
Aerial roots often exhibit velamen, and a stele involved by parenchymatic cortex limited internally by an endodermis, and externally by an exodermis (Holtzmeier et al.
La exodermis en ambas especies esta constituida por celulas cuadrangulares de paredes engrosadas (Figuras 6g, h; 7d, f).
and tangential cell walls of the exodermis equips the root with a
The cortex displays an exodermis with Casparian bands (Figures 18-19), followed by the cortical parenchyma consisting of isodiametric cells.