The exodermis is a layer of cells from the outermost layer of the cortex of many angiosperms. Like the endodermis, its cells are very compact and are surrounded by a Casparian strip, two features which are used to restrict flow of water to symplastic rather than apoplastic flow through passages through the cells' membranes called plasmodesmata.

The exodermis is thought to provide protection against water loss of the root to the soil, and also to serve as defense against microorganisms.[1]

See also


  1. Raven, Peter H., Ray F. Evert, Susan E. Eichhorn. (2005) Biology of Plants. 7th Edition. W.H. Freeman and Company Publishers
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.