exodermis


Also found in: Medical.

exodermis

[‚ek·sō′dər·məs]
(botany)
References in periodicals archive ?
Taleinsik et al., (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.
Ma, "Root endodermis and exodermis: structure, function, and responses to the environment," Journal of Plant Growth Regulation, vol.
Faint Casparian bands are first visible on the uniseriate exodermis radial walls, and a lignified, very small-celled, inner hypodermal sclerenchyma layer (SC) and protoxylem poles appear at 10 mm (Figure 1(b)).
The short culms separated are composed of exodermis (bark), vascular bundle sheaths, soft tissue cells and endodermis (inner surface layers).
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.