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Conserved requirement for a plant host cell protein in powdery mildew pathogenesis
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Conserved requirement for a plant host cell protein in powdery mildew pathogenesis
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Journal Article
Conserved requirement for a plant host cell protein in powdery mildew pathogenesis
2006
Overview
In the fungal phylum Ascomycota, the ability to cause disease in plants and animals has been gained and lost repeatedly during phylogenesis
1
. In monocotyledonous barley, loss-of-function
mlo
alleles result in effective immunity against the Ascomycete
Blumeria graminis
f. sp.
hordei
, the causal agent of powdery mildew disease
2
,
3
. However,
mlo
-based disease resistance has been considered a barley-specific phenomenon to date. Here, we demonstrate a conserved requirement for MLO proteins in powdery mildew pathogenesis in the dicotyledonous plant species
Arabidopsis thaliana
. Epistasis analysis showed that
mlo
resistance in
A. thaliana
does not involve the signaling molecules ethylene, jasmonic acid or salicylic acid, but requires a syntaxin, glycosyl hydrolase and ABC transporter
4
,
5
,
6
. These findings imply that a common host cell entry mechanism of powdery mildew fungi evolved once and at least 200 million years ago, suggesting that within the Erysiphales (powdery mildews) the ability to cause disease has been a stable trait throughout phylogenesis.
Publisher
Nature Publishing Group US,Nature Publishing Group
Subject
/ Animal Genetics and Genomics
/ Barley
/ Biological and medical sciences
/ Biomedical and Life Sciences
/ Fundamental and applied biological sciences. Psychology
/ Genetics
/ Genetics of eukaryotes. Biological and molecular evolution
/ Grain
/ letter
/ Plant-pathogen relationships
/ Plants, Genetically Modified
/ Proteins
