Phytochemistry Reviews

, Volume 8, Issue 1, pp 135–148

Glucosinolates and the clubroot disease: defense compounds or auxin precursors?

Authors

    • Institut für BotanikTechnische Universität Dresden
Article

DOI: 10.1007/s11101-008-9096-2

Cite this article as:
Ludwig-Müller, J. Phytochem Rev (2009) 8: 135. doi:10.1007/s11101-008-9096-2

Abstract

The clubroot disease is caused by the obligate biotrophic protist Plasmodiophora brassicae and is one of the most damaging for the family of Brassicaceae. Since many economically important crops belong to this plant family, the understanding of mechanisms how the disease is developing, are of high importance. Glucosinolates, a group of secondary plant products in the family of Brassicaceae, have long been associated with clubroot disease symptoms. Measurements showed that several glucosinolates are induced in root galls. While aliphatic glucosinolates are regarded as defense compounds, analysis of Brassica cultivars as well as Arabidopsis thaliana mutants provided correlative evidence between disease severity and indole glucosinolate content. The latter have been discussed as precursors for auxin biosynthesis. Since high auxin levels are associated with large root galls, indole glucosinolates could contribute directly or indirectly to the extent of disease development. Transcriptome and proteome experiments have revealed evidence for the involvement of genes from the glucosinolate and auxin pathway in gall formation. These data have been complemented by expression and mutant analysis. It can be concluded that regulation of glucosinolate and IAA biosynthesis might differ in Brassica and Arabidopsis.

Keywords

Auxin Brassicaceae Clubroot disease Glucosinolates Plasmodiophora brassicae

Abbreviations

ESP

Epithiospecifier protein

ESM

Epithiospecifier modifier

GSL

Glucosinolate

IAA

Indole-3-acetic acid

IAAld

Indole-3-acetaldehyde

IAM

Indole-3-acetamide

IAN

Indole-3-acetonitrile

IAOx

Indole-3-acetaldoxime

JA

Jasmonic acid

MBP

Myrosinase binding protein

MyAP

Myrosinase associated protein

PAA

Phenylacetic acid

QTL

Quantitative trait loci

SA

Salicylic acid

Copyright information

© Springer Science+Business Media B.V. 2008