UNSPECIFIED (1996) Arabidopsis AUX1 gene: A permease-like regulator of root gravitropism. SCIENCE, 273 (5277). pp. 948-950. ISSN 0036-8075

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Abstract

The plant hormone auxin regulates various developmental processes including root formation, vascular development, and gravitropism. Mutations within the AUX1 gene confer an auxin-resistant root growth phenotype and abolish root gravitropic curvature. Polypeptide sequence similarity to amino acid permeases suggests that AUX1 mediates the transport of an amino acid-like signaling molecule. Indole-3-acetic acid, the major form of auxin in higher plants, is structurally similar to tryptophan and is a likely substrate for the AUX1 gene product. The cloned AUX1 gene can restore the auxin-responsiveness of transgenic aux1 roots. Spatially, AUX1 is expressed in root apical tissues that regulate root gravitropic curvature.

Item Type:	Journal Article
Subjects:	Q Science
Journal or Publication Title:	SCIENCE
Publisher:	AMER ASSOC ADVANCEMENT SCIENCE
ISSN:	0036-8075
Date:	16 August 1996
Volume:	273
Number:	5277
Number of Pages:	3
Page Range:	pp. 948-950
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/18504

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