endodermis


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endodermis

a one-cell layer of tissue found outside the vascular areas in many ANGIOSPERMS, which is particularly important in the roots where endodermal cells are thickened with CASPARIAN STRIPS for control of water transport. Water and salts have to pass through the endodermal cells which act as a kind of valve.
References in periodicals archive ?
Meristematic activity of the endodermis and the pericycle in the primary thickening in monocotyledons.
With respect to cylinder vascular the xylem tissue were not clear (figure, 4 A and D), but it contained many lacunae beside of endodermis layer, described by [4] as a Metaxylem.
According to Professor Malcolm Bennett, Biology Director for the Centre for Plant Integrative Biology and Professor of Plant Sciences in the Division of Plant and Crop Sciences, "We have shown that gibberellin plays a crucial role in controlling the size of the root meristem, and that it is the endodermis which sets the pace for expansion rates in the other tissues.
The root structure from outside to inside consists of root hairs, epidermis, cortical parenchyma, endodermis, peripheral circle, vascular tissue and parenchymal pith in both control groups and treatments but the root hair only exists in the control group (figure 2A).
The vascular system is surrounded by one endodermis cell layer and 1-3 pericycle strata.
celled, and the endodermis has suberized radial walls that do not become
of silica deposits in the endodermis of the seminal roots of Sorghum
The stele is V-shaped and the endodermis is clearly visible and shows evident Casparian strips; two layers of pericycle were observed.
Leaf anatomy of Bonnetiaceae, including observations on a foliar endodermis.
Thus, the endodermis of a nonaccumulator limits the movement of aluminum to the stele, whereas the endodermis of an hyperaccumulator does not.
The endodermis is well developed and composed of a single layer of rectangular, small, thin-walled cells with casparian thickenings on their radial walls.