What is the synergistic function of auxin and cytokinin?
Auxin acts synergistically with cytokinin to control the shoot stem‐cell niche, while both hormones act antagonistically to maintain the root meristem.
How do auxins and cytokinins work together?
In the root meristem, auxin induces the meristematic cell division, whereas cytokinin promotes the cell to switch from the meristematic to differentiated state through inhibiting auxin signaling.
Which plant hormone is synergistic with auxin?
cytokinin
Here, we provide evidence that indicates that cytokinin and auxin have a synergistic relationship at the medial domain during gynoecium development, and that SPT is important for this interaction. The flower is the reproductive unit in angiosperms, and its origin contributed to angiosperm evolution and diversification.
In what respect auxin and cytokinin are antagonistic to each other?
The hormones auxin and cytokinin are essential for plant growth and development. An increase in cytokinin level counteracts this inhibitory effect and leads to an inhibition of auxin signaling. At higher concentrations of both hormones, these antagonistic interactions between cytokinin and auxin are absent.
In which process auxin and cytokinin show synergistic action?
Auxin acts synergistically with cytokinin to control the shoot stem-cell niche, while both hormones act antagonistically to maintain the root meristem. The process of root growth inhibition is also controlled by ethylene signaling which acts upstream of auxin.
Which pair of hormones show synergistic effect on cell division?
Growth, differentiation and development processes of plants are found to be regulated by two or more phytohormones acting synergistically or antagonistically, e.g. cell division is promoted by both auxins and cytokinins acting synergetically. Cell growth is controlled by auxins, gibberellins and cytokinins.
What is the role of auxin and cytokinin in plant tissue culture?
The Auxins facilitate cell division and root differentiation. Auxins induce cell division, cell elongation, and formation of callus in cultures. The Cytokinins induce cell division and differentiation. Cytokinins promote RNA synthesis and stimulate protein and enzyme activities in tissues.
What is the difference between auxins and cytokinins?
> Cytokinin inhibits root branching and lateral root formation….Write the main difference between auxins and cytokinins.
| Auxins | Cytokinins |
|---|---|
| In the shoot apex and leaf primordial, the auxins are produced. | In fruits and roots, in the embryo of seeds and endosperm cytokinins are found. |
Which is an anti ethylene property of cytokinin?
(b) When cytokkinins are added directly to the abscission layar, senescence of the zone is atarded. This delayes the degradation of protein and chlorophyll of the plant parts and hence delays senescence.As they act as antisenescent, they act as antagonistic to ethylene which accelerate senescence.
What is the difference between auxin and cytokinin?
> Cytokinin inhibits root branching and lateral root formation….Write the main difference between auxins and cytokinins.
| Auxins | Cytokinins |
|---|---|
| In the shoot apex and leaf primordial, the auxins are produced. | In fruits and roots, in the embryo of seeds and endosperm cytokinins are found. |
| The growth of apical bud is promoted by auxins. | Lateral bud growth is promoted by cytokinins. |
Which of following pair hormone that has synergistic effects?
Synergistic–epinephrine & norepinephrine.
What is synergistic hormone action?
Synergism occurs when two or more hormones produce the same effects in a target cell and their results are amplified. Antagonism occurs when a hormone opposes or reverses the effect of another hormone.