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Soil/root water bal

For 330 Soil and root water balance, many from Taiz & Zeiger 2002

Apoplastic path Path of water movement exclusively through the cell wall without crossing any membranes.
Available water Difference in soil water content between field capacity and permanent wilting point; synonymous with water holding capacity.
Casparian strip A radial band in endodermal cell walls that is impregnated with suberin, a waxlike, hydrophobic substance.
Cortex Layer of the plant stem or root bounded on the outside by the epidermis and on the inside by the endodermis.
Endodermis The innermost layer of the cortex that contains the casparian strip and regulates the flow of materials between the cortex and the vascular tissues.
Field capacity Water held by a soil after gravitational water has drained.
Hydraulic conductivity A measure of the ease with which water moves through a media such as soil or a membrane.
Matrix potential A component of water potential caused by the adhesion of water molecules to insoluble solids.
Soil texture Proportional distribution of soil particle sizes.
Symplastic path Path of water movement between symplast (cytoplasm) of adjacent cellsinside of cells and through plasmodesmata.
Created by: mdcoleman