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The innermost layer of the cortex that forms a sheath around the vascular tissue of roots and some stems.


(Botany) botany the specialized innermost layer of cortex in roots and some stems, which controls the passage of water and dissolved substances between the cortex and stele
[C19: from New Latin, from endo- + Greek derma skin]


(ˌɛn doʊˈdɜr mɪs)

a specialized tissue in the roots and stems of vascular plants, composed of a single layer of modified parenchyma cells forming the inner boundary of the cortex.
[1880–85; endo- + -dermis, extracted from epidermis]
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References in periodicals archive ?
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).
They report that the monocot cambium can originate both inside and outside of the endodermis in roots of Dracaena, even within a single section.
suberin: Lipid material found in the Casparian strip of the endodermis and in the cell walls of cork tissue.
b) La endodermis monoestratificada, formada por celulas regulares, que contienen sustancias de reserva.
Se detecta la presencia de caracteres comunes a todas como epidermis uniestratificada, que es rapidamente sustituida por la exodermis, presencia de cavidades secretoras asociadas a la endodermis y la naturaleza secretora de la propia endodermis.
In the examined sections of both cultivars, the endodermis is in the third stage of ontogenesis with secondary thickened inner tangential and radial walls and prominent silica aggregates on the inner tangential walls.
In radish lateral roots, thickening of pericycle and cortical cell walls adjacent to endodermis was reported under Cd-stress (Lux et al.
En seccion transversal presentan un solo haz, con xilema en forma de V de brazos divergentes, rodeado por floema, parenquima y una endodermis con bandas de Caspary o engrosamientos en forma de U.
In the root cortex (Figures 16-17) and the rhizomes (Figures 20-21), the derivatives cells of the meristematic endodermis (En) present either slightly thickened walls, as in Pycreus macrosctachyos and Cyperus odoratus (amphibious), or more thickened walls, as in Echinodorus grandiflorus and Habenaria repens (emergent species).
celled, and the endodermis has suberized radial walls that do not become