Day length is measured in leaves and, when appropriate, leads to the production of floral stimuli called florigens that are transmitted to the shoot apical meristem to initiate inflorescence development1. (bvsalud.org)
Here we show that the arrival of Hd3a and RFT1 at the shoot apical meristem activates FLOWERING LOCUS T-LIKE 1 (FT-L1), encoding a florigen-like protein that shows features partially differentiating it from typical florigens. (bvsalud.org)
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)
Organs2
Cells in the meristem can develop into all the other tissues and organs that occur in plants. (wikipedia.org)
citation needed] Shoot apical meristems are the source of all above-ground organs, such as leaves and flowers. (wikipedia.org)
On the other hand, transgenic plants produced from mature tissue via genetic transformation can drastically shorten flowering and fruiting time and thus speed up field evaluation studies. (springer.com)
Behavior1
While development may include changes in a variety of aspects of an organism, from structure to physiology to behavior, we will focus here on how development produces and changes the structure and form of an organism throughout its lifetime. (geneseo.edu)
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)
Develop2
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)
For most familiar organisms the starting point is a special cell that has the ability to proliferate, develop a complex structure, and grow to produce an 'end point', a specific form that characterizes that particular creature. (geneseo.edu)
Apical meristem9
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)
Apical meristem =at root base or shoot tip, causes root/stem length-wise growth. (powershow.com)
Conversely, compressing the shoot apical meristem externally with an indenter results in an elastic response that is more compatible with a pressurized shell than an aggregate of cells [ 10 ]. (biomedcentral.com)
The initiation of leaf primordia is established by recruitment of cells from the flanks of the shoot apical meristem (SAM). (prolekarniky.cz)
Tissues2
Cells in the meristem can develop into all the other tissues and organs that occur in plants. (wikipedia.org)
The ability of inner tissues to push on the epidermis has also been nicely illustrated with the observation that artificially increasing cell proliferation and cell growth in inner tissues in mutants can generate cracks in the epidermis [ 9 ]. (biomedcentral.com)
Primary2
These differentiate into three kinds of primary meristems. (wikipedia.org)
The primary meristems in turn produce the two secondary meristem types. (wikipedia.org)
Apex2
At the apex of the stem, the hemispherical shape of shoot meristem prescribes isotropic tensile stress patterns. (biomedcentral.com)
Meristem activity in the shoot apex is specified in part by the class I KNOTTED-LIKE HOMOBOX ( KNOX ) genes [1] - [3] . (prolekarniky.cz)
Stem2
Cells of this zone have a stem cell function and are essential for meristem maintenance. (wikipedia.org)
Apical meristems are found in two locations: the root and the stem. (wikipedia.org)
Shoot2
citation needed] Shoot apical meristems are the source of all above-ground organs, such as leaves and flowers. (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)
Cells3
Differentiated plant cells generally cannot divide or produce cells of a different type. (wikipedia.org)
At the meristem summit, there is a small group of slowly dividing cells, which is commonly called the central zone. (wikipedia.org)
The corpus and tunica play a critical part of the plant physical appearance as all plant cells are formed from the meristems. (wikipedia.org)
Plant2
Apical meristems are the completely undifferentiated (indeterminate) meristems in a plant. (wikipedia.org)
The apical meristems are layered where the number of layers varies according to plant type. (wikipedia.org)