Casparian strip


Also found in: Dictionary, Encyclopedia, Wikipedia.
Related to Casparian strip: root pressure, cambium, Apoplast
Casparian stripclick for a larger image
Fig. 95 Casparian strip . The strip surrounds the endodermal root cell.

Casparian strip

a waterproof thickening on the radial (side) and end walls of endodermal root cells (see ENDODERM which is thought to influence the route by which water passes from the cortex into the VASCULAR BUNDLE of the STELE.
Mentioned in ?
References in periodicals archive ?
These findings indicated that these two sulfated peptides act as ligands for GSO1/ SGN3 and GSO2 receptors to regulate contiguous Casparian strip formation in roots.
Until recently, little was known about the genes that drive the formation of the Casparian strip, which is composed of a fine band of lignin, the polymer that gives wood its strength.
Lyshede speculated that this cell layer, which does not develop a casparian strip, transfers material from dying cortical and epidermal cells to the stele while at the same time resisting collapse in order to maintain the normal turgor of sieve tubes in the phloem.
sprucei, with vascular tissues centered and surrounded by an endodermis with Casparian strips, with the xylem seen in transversal section as an open V of long arms, at the end of which a small amount of phloem is formed, a type also found in B.
Cortex is parenchymatous with secretory ducts (Figure 5B) and there is no evidence of endodermis with Casparian strips nor starchy sheath.

Full browser ?