Naturally occurring auxin transport regulators

Mark Jacobs, Philip H. Rubery

Research output: Contribution to journalArticle

443 Citations (Scopus)

Abstract

The process of polar auxin transport, central to a plant's auxin relations, can be inhibited by a group of synthetic compounds that apparently act by binding to a plasma membrane protein known as the naphthylphthalamic acid (NPA) receptor. No endogenous ligand to the NPA receptor, capable of affecting polar auxin transport in plants, has yet been found. It is now shown that a group of flavonoids - including quercetin, apigenin, and kaempferol - can specifically compete with [3H]NPA for binding to its receptor and can perturb auxin transport in a variety of plant tissues and transport systems in a manner closely paralleling the action of synthetic transport inhibitors. Because the active flavonoids are widely distributed in the plant kingdom and exert their effects at micromolar concentrations approximating likely endogenous levels, they may act as natural auxin transport regulators in plants.

Original languageEnglish (US)
Pages (from-to)346-349
Number of pages4
JournalScience
Volume241
Issue number4863
StatePublished - 1988
Externally publishedYes

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auxins
naphthylphthalamic acid
receptors
flavonoids
apigenin
kaempferol
membrane proteins
quercetin
blood proteins
plant tissues
plasma membrane

ASJC Scopus subject areas

  • General

Cite this

Jacobs, M., & Rubery, P. H. (1988). Naturally occurring auxin transport regulators. Science, 241(4863), 346-349.

Naturally occurring auxin transport regulators. / Jacobs, Mark; Rubery, Philip H.

In: Science, Vol. 241, No. 4863, 1988, p. 346-349.

Research output: Contribution to journalArticle

Jacobs, M & Rubery, PH 1988, 'Naturally occurring auxin transport regulators', Science, vol. 241, no. 4863, pp. 346-349.
Jacobs, Mark ; Rubery, Philip H. / Naturally occurring auxin transport regulators. In: Science. 1988 ; Vol. 241, No. 4863. pp. 346-349.
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