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Plant Biol (Stuttg) 2006; 8(3): 326-333
DOI: 10.1055/s-2006-924075
Review Article

Georg Thieme Verlag Stuttgart KG · New York

Many Roads Lead to “Auxin”: of Nitrilases, Synthases, and Amidases

S. Pollmann1 , A. Müller2 , E. W. Weiler1
  • 1Department of Plant Physiology, Ruhr-University Bochum, Universitätsstraße 150, ND 3/55, 44801 Bochum, Germany
  • 2CarboGen AG, Schachenallee 29, 5001 Aarau, Switzerland
Further Information

Publication History

Received: September 15, 2005

Accepted: February 28, 2006

Publication Date:
15 May 2006 (online)

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Abstract

Recent progress in understanding the biosynthesis of the auxin, indole-3-acetic acid (IAA) in Arabidopsis thaliana is reviewed. The current situation is characterized by considerable progress in identifying, at the molecular level and in functional terms, individual reactions of several possible pathways. It is still too early to piece together a complete picture, but it becomes obvious that A. thaliana has multiple pathways of IAA biosynthesis, not all of which may operate at the same time and some only in particular physiological situations. There is growing evidence for the presence of an indoleacetamide pathway to IAA in A. thaliana, hitherto known only from certain plant-associated bacteria, among them the phytopathogen Agrobacterium tumefaciens.

Key words

Arabidopsis thaliana - auxin biosynthesis - amidase - indole-3-acetic acid - indole-3-acetamide - indole-3-acetonitrile - nitrilase

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S. Pollmann

Lehrstuhl für Pflanzenphysiologie
Ruhr-Universität Bochum

Universitätsstraße 150, ND 3/55

44801 Bochum

Germany

Email: stephan.pollmann@rub.de

Guest Editor: R. Reski