calyptrogen
Quick Summary
In botany, the calyptrogen is a layer of cells responsible for originating the root cap. The root cap is a protective layer of parenchyma cells that shields the root apical meristem as the root grows through the soil. New cells for the root cap are continuously added by the calyptrogen. This specialized tissue is part of the root apex, a region of active cell division that gives rise to all primary root tissues. The calyptrogen is one of the histogens, or groups of initial cells, proposed in the histogen theory of root apical organization.123
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angiospermRoots…of meristematic cells called the calyptrogen. Root hairs also begin to develop as simple extensions of protodermal cells near the root apex. They greatly increase the surface area of the root and facilitate the absorption of water and minerals from the soil.
Read More…of meristematic cells called the calyptrogen. Root hairs also begin to develop as simple extensions of protodermal cells near the root apex. They greatly increase the surface area of the root and facilitate the absorption of water and minerals from the soil.
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plant developmentThe root tipA fourth histogen, the calyptrogen, produces the root cap. The histogens have been thought to lie in linear order in the apex, with the initial cells of the vascular system toward the older part of the root, and those of the cap toward the tip.
Read MoreA fourth histogen, the calyptrogen, produces the root cap. The histogens have been thought to lie in linear order in the apex, with the initial cells of the vascular system toward the older part of the root, and those of the cap toward the tip.
Read More