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

S. Pollmann; A. Müller; E. W. Weiler

doi:10.1055/s-2006-924075

Plant Biology, Table of Contents

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

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

Full Text

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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