14 Facts About Auxin

Auxin is present in all parts of a plant, although in very different concentrations.

Auxin found that the tip could be cut off and put back on, and that a subsequent one-sided illumination was still able to produce a positive phototropic curvature in the basal part of the coleoptile.

Auxin demonstrated that the transmission could take place through a thin layer of gelatin separating the unilaterally illuminated tip from the shaded stump.

Auxin has a significant effect on spatial and temporal gene expressions during the growth of apical meristems.

Auxin relies on PIN1 which works as an auxin efflux carrier.

Auxin employment begins in the embryo of the plant, where the directional distribution of auxin ushers in subsequent growth and development of primary growth poles, then forms buds of future organs.

Auxin participates in phototropism, geotropism, hydrotropism and other developmental changes.

Auxin induces sugar and mineral accumulation at the site of application.

Auxin induces the formation and organization of phloem and xylem.

Auxin induces both growth of pre-existing roots and root branching, and adventitious root formation.

Auxin is sent to the part of the plant facing away from the light, where it promotes cell elongation, thus causing the plant to bend towards the light.

Auxin is required for fruit growth and development and delays fruit senescence.

Auxin must be removed from the valve margin cells to allow the valve margins to form.

Auxin plays a minor role in the initiation of flowering and development of reproductive organs.