symplast การใช้

The Casparian strip forces water into the symplast at the root endodermal cells.
Water moving into or out of the xylem, which is part of the apoplast, can thereby be regulated since it must enter the symplast in the endodermis.
Structurally, the apoplast is formed by the continuum of cell walls of adjacent cells as well as the extracellular spaces, forming a tissue level compartment comparable to the symplast.
In 1930, Ernst M黱ch coined the term " apoplast " in order to separate the " living " symplast from the " dead " plant region, the latter of which included the cell wall.