What do you mean by procambium?
The procambium is a meristematic tissue concerned with providing the primary tissues of the vascular system; the cambium proper is the continuous cylinder of meristematic cells responsible for producing the new vascular tissues in mature stems and roots.
What does procambium differentiate into?
The first procambium appearance in the embryo. During seedling germination, vascular tissues of the root, hypocotyl and cotyledons differentiate from a predetermined tissue, the procambium, located in the innermost domain of these organs [9].
How procambium is formed?
(Pro)cambium cells give rise to vascular tissues and form a reticulate meristem pervading the whole plant body. In the root, the procambium arises from oriented and coordinated cell divisions, controlled by a mutual interaction between auxin and cytokinin signaling.
What is Phellogen in botany?
Definition of phellogen : a secondary meristem that initiates phellem and phelloderm in the periderm of a stem or root. — called also cork cambium.
What is the role of protoderm?
The protoderm gives rise to epidermis, which surrounds the plant. The ground meristem gives rise to ground tissue, a group of tissues with generalized functions such as photosynthesis, storage, and support. Finally, the procambium gives rise to the vascular tissue, which functions in transport.
Where is the procambium located?
The procambium is located next to the protoderm. The procambium gives rise to cells that make up the primary xylem and the primary phloem. Aside from the primary vascular tissues, the vascular cambium and the cork cambium may also arise from the procambium.
Which primary tissues come from the procambium?
The procambium produces vascular tissues. The primary xylem, fascicular cambium, and primary phloem arise from the procambium. The ground meristem produces the pith and cortex, which are ground tissues.
What is phellogen and its function?
cambium, called the phellogen or cork cambium, is the source of the periderm, a protective tissue that replaces the epidermis when the secondary growth displaces, and ultimately destroys, the epidermis of the primary plant body.
What is the origin of phellogen?
The first phellogen differentiates in the seedling stage from collenchyma cells in the second or third layer beneath the epidermis. The subsequent phellogen is periodically derived from phloem parenchyma cells.
Where does the protoderm originate from?
apical meristem
It is a meristem that is located at the tips or apices of a plant. Thus, it is found particularly in the root apex and the shoot apex. In vascular plants, the apical meristem may develop into the protoderm, the procambium, and the ground meristem.