There are two types of apical meristem tissue: shoot apical meristem (SAM), which gives rise to organs like the leaves and flowers, and root apical meristem (RAM), which provides the meristematic cells for future root growth. (wikipedia.org)
Cells at the shoot apical meristem summit serve as stem cells to the surrounding peripheral region, where they proliferate rapidly and are incorporated into differentiating leaf or flower primordia. (wikipedia.org)
The shoot apical meristem consists of four distinct cell groups: Stem cells The immediate daughter cells of the stem cells A subjacent organizing center Founder cells for organ initiation in surrounding regions These four distinct zones are maintained by a complex signalling pathway. (wikipedia.org)
In Arabidopsis thaliana, 3 interacting CLAVATA genes are required to regulate the size of the stem cell reservoir in the shoot apical meristem by controlling the rate of cell division. (wikipedia.org)
While the shoot apical meristem (SAM) formed in the embryo only contributes to the main stem, the branched structure observed in many plants relies on axillary meristems (AMs) formed post-embryonically. (researchgate.net)
Regardless of habit, there is typically only one growing point or apical meristem per palm stem. (ashs.org)
Thus, care should be taken when performing horticultural tasks to avoid making wounds (which are permanent, unsightly, and potential entry sites for pests and diseases) and damaging the sole apical meristem. (ashs.org)
Stem cell2
Cells of this zone have a stem cell function and are essential for meristem maintenance. (wikipedia.org)
While the regulation of the stem cell population in an established meristem is well described, how it is initiated in newly formed meristems is less well underst. (researchgate.net)
Embryogenesis1
Meristems can be formed either during embryogenesis or during the plant's life such as, for instance, axillary meristems. (researchgate.net)
Organ1
This technique initially utilizes a vegetative organ of a plant, such as a leaf, root, or stem. (mediapreparators.com)
Plant aerial development relies on meristem activity which ensures main body plant axis development during plant life. (researchgate.net)
This activity is carried out in specialized laboratories, whose professionals are dedicated to cultivate explants in vitro , that is, a separate part of a plant such as protoplasts, cells, tissues or organs, under strictly controlled environmental conditions with the purpose of producing large quantities of plants with the same genotype. (mediapreparators.com)
In the cosmetics sector, collagen protein extracts or growth factors are produced from plant stem cells, avoiding the use of animals or animal tissues. (mediapreparators.com)
Types1
The primary meristems in turn produce the two secondary meristem types. (wikipedia.org)
Plants2
Cells in the meristem can develop into all the other tissues and organs that occur in plants. (wikipedia.org)
The formation of new meristems is essential for the plastic expansion of the highly branched shoot and root systems. (researchgate.net)
Conditions1
It is thought that this kind of meristem evolved because it is advantageous in Arctic conditions. (wikipedia.org)
Growth2
The proliferation and growth rates at the meristem summit usually differ considerably from those at the periphery. (wikipedia.org)
These secondary meristems are also known as lateral meristems because they are involved in lateral growth. (wikipedia.org)
Root1
Apical meristems are found in two locations: the root and the stem. (wikipedia.org)
Cells2
At the meristem summit, there is a small group of slowly dividing cells, which is commonly called the central zone. (wikipedia.org)
One of these indications might be the loss of apical dominance and the release of otherwise dormant cells to develop as auxiliary shoot meristems, in some species in axils of primordia as close as two or three away from the apical dome. (wikipedia.org)
Distinct1
Further stipe growth and splitting produces an apical scimitar-shaped blade distinct from the remaining blades. (fao.org)
Rise1
The outer blade of the two produced by the splitting becomes an apical frond initial while the inner portion remains as a basal meristem that will give rise to yet further new frond and basal meristem initials. (fao.org)
Lower1
Lower portions of the basal stipe system also produce root-like haptera that grow downwards, wrapping around and forming attachment to irregularities in solid substrata. (fao.org)