Dictionary of molecular biology. 2004.
Casparian strip — In plant anatomy, the Casparian strip is a band of Cell wall material in the radial and transverse walls of the endodermis, which is chemically different from the rest of the cell wall. It is used to block the passive flow of materials, such as… … Wikipedia
casparian strip — noun Usage: usually capitalized C Etymology: Robert Caspary died 1887 German botanist + English an : a secondary thickening in many endodermal cells in the form of a continuous band or strip on the radial and transverse walls compare endodermis … Useful english dictionary
Magnesium in biology — Magnesium is an essential element in biological systems. Magnesium occurs typically as the Mg2+ ion. It is an essential mineral nutrient for life[1][2][3] and is present in every cell type in every organism. For example, ATP (adenosine… … Wikipedia
Suberin — is a waxy substance found in higher plants. Suberin is a main constituent of cork, and is named after the Cork Oak, Quercus suber . Anatomy and physiology Suberin is highly hydrophobic and its main function is to prevent water from penetrating… … Wikipedia
endodermis — Single layer of cells surrounding the central stele (vascular tissue) in roots. The radial and transverse walls contain the hydrophobic Casparian band, that prevents water flow in or out of the stele through the apoplast. Also present in some… … Dictionary of molecular biology
suberin — Fatty substance, containing long chain fatty acids and fatty esters, found in the cell walls of cork cells (phellem) in higher plants. Also found in the Casparian band. Renders the cell wall impervious to water … Dictionary of molecular biology
cortex — /kawr teks/, n., pl. cortices / teuh seez /. 1. Anat., Zool. a. the outer region of an organ or structure, as the outer portion of the kidney. b. the cerebral cortex. 2. Bot. a. the portion of a stem between the epidermis and the vascular tissue; … Universalium
lower vascular plant — ▪ biology Introduction formerly pteridophyte, also called vascular cryptogam, any of the spore bearing vascular plants, including the ferns, club mosses, spike mosses, quillworts, horsetails, and whisk ferns. Once considered of the… … Universalium
