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Extracellular spaceApoplastSecreted


The apoplast is the "non-living" extracellular space that surrounds the symplast. It consists of cell walls and spaces between cells. Water and solutes can move freely in this framework, except at the endodermis in roots and stems where the apoplastic flow of ions is interrupted by the Casparian strip, forcing water to flow to symplast.


› Cellular component



Gene Ontology


apoplast [ GO:0048046 ]
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