Keywords |
  • Botany,
  • Botany

Plasmodesma

A plasmodesma is a tunnel through the cellulose-pectin wall of plant cells that connects the plasma membranes with the cell cytoplasm.

Linked by this cellular connection, the cells form a continuous channel : the symplastic pathway.

Plasmodesmata are used by water, solutes, proteins and some viruses to circulate through the plant.

Structural diagram of a plasmodesma. The plasmodesma crosses cell walls (CW) and links the membranes (PM). A desmotubule (DM) connecting two endoplasmic reticula (ER) controls the movement of molecules. © Smartse, Wikimédia CC by-sa 3.0 Structural diagram of a plasmodesma. The plasmodesma crosses cell walls (CW) and links the membranes (PM). A desmotubule (DM) connecting two endoplasmic reticula (ER) controls the movement of molecules. © Smartse, Wikimédia CC by-sa 3.0

Plasmodesma - 1 Photo
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