Does auxin inhibit cell growth?
On the other hand, high auxin concentrations are known to inhibit root cell expansion and overall root growth (8, 17). Moreover, exogenous auxin application has been described to trigger apoplast alkalization in roots, which is the opposite effect as in shoots (18–20).May 30, 2017
Do auxins inhibit growth?
The hormone auxin is known to inhibit root elongation and to promote initiation of lateral roots.
Do auxins promote growth?
Auxins are organic substances, which promote the growth and development of plants at low concentrations.Dec 8, 2020
Why auxin slows down the growth of roots?
To accommodate this function, a high concentration of auxins results in the opposite effect in the roots to in the shoots, inhibiting cell elongation and causing the roots to turn away from a source of light, which usually results in them growing downward, deeper into soil.Nov 1, 2021
How does auxin affect cell growth?
The plant hormone auxin is well known to stimulate cell elongation via increasing wall extensibility. Auxin participates in the regulation of cell wall properties by inducing wall loosening.Mar 22, 2018
How do auxins cause cell elongation?
Abstract. Plant cells elongate irreversibly only when load-bearing bonds in the walls are cleaved. Auxin causes the elongation of stem and coleoptile cells by promoting wall loosening via cleavage of these bonds. This process may be coupled with the intercalation of new cell wall polymers.
Does auxin stimulate growth?
Auxins are organic substances, which promote the growth and development of plants at low concentrations. Auxins regulate numerous developmental processes in plants including cell expansion, root initiation, vascular tissue differentiation, bud and flower growth (Davies, 2013).Dec 8, 2020
Does auxin promote cell growth?
Auxin promotes cell division and meristem maintenance and also plays an important role in the establishment of cellular patterning. Plant development thus integrates the regulation of cell proliferation and growth with further cell expansion and differentiation.
Does auxin stimulate cell growth?
The plant hormone auxin is well known to stimulate cell elongation via increasing wall extensibility. Auxin participates in the regulation of cell wall properties by inducing wall loosening.Mar 22, 2018
Does auxin inhibit or promote growth?
Auxin is known to play a complex role in plant growth regulation, as it can both stimulate and inhibit tissue expansion, depending on the tissue and its concentration (6–8). A positive effect of auxin on growth was hypothesized by the acid growth theory (1).May 30, 2017
Does auxin cause cell elongation?
Auxin causes the elongation of stem and coleoptile cells by promoting wall loosening via cleavage of these bonds. This process may be coupled with the intercalation of new cell wall polymers.