Apoplast Transport vs. Symplast Transport
Metabolic State of the Root
What is Apoplast Transport?
Apoplast transport is the passive type of absorption done by the plants, the water from the roots moves upward through the apoplast of root and other available free spaces. The main carriers of this type of transport are cell wall and intercellular spaces. As the carriers are complexly permeable, the process of absorption is faster in apoplast transport as compared to the active transport (symplast transport). The apoplast transport is based on non-living parts of the cell, and it doesn’t get affected by the metabolic state of the root. The water can reach up to the endodermis using this type of transport, for passing through the endodermis process symplast transport is required. It should be kept mentioned here that apoplast is the space present outside the cell wall, it comprises of the cell wall and intercellular spaces. The transportation done in the plants using the carriers mentioned above is called the apoplast transport.
What is Symplast Transport?
Symplast transport is the active type of absorption done by the plants, the water from the roots first enters to the cell sap and later get passes from one cell to another. The transport in the plants in which living protoplasm is involved is known as the symplast transport. The symplast transport does not involve the cell wall and the intercellular spaces; it heavily depends upon the cytoplasm of the plant cells, which are interconnected with the plasmodesmata. As it involves the living parts of the cell, it directly gets affected with the metabolic state of the root. As compared to the apoplast transport, symplast transport is slightly a slower process.