Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Transcription profiling by array of Arabidopsis expressing Cladosporium fulvum virulence protein Avr2

ABSTRACT: Heterologous expression of the fungal pathogen Cladosporium fulvum Avr2 in Arabidopsis plants. Experiment Overall Design: Samples used for microarray analyses were replicated three times in independent experiments and each replication consisted of 10 Avr2-expressing Arabidopsis plants and 10 Col-0 plants grown for four weeks under standard greenhouse conditions

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Bart Thomma

PROVIDER: E-GEOD-10801 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

The Cladosporium fulvum virulence protein Avr2 inhibits host proteases required for basal defense.

van Esse H Peter HP Van't Klooster John W JW Bolton Melvin D MD Yadeta Koste A KA van Baarlen Peter P Boeren Sjef S Vervoort Jacques J de Wit Pierre J G M PJ Thomma Bart P H J BP

The Plant cell 20080725 7

Cladosporium fulvum (syn. Passalora fulva) is a biotrophic fungal pathogen that causes leaf mold of tomato (Solanum lycopersicum). During growth in the apoplast, the fungus establishes disease by secreting effector proteins, 10 of which have been characterized. We have previously shown that the Avr2 effector interacts with the apoplastic tomato Cys protease Rcr3, which is required for Cf-2-mediated immunity. We now show that Avr2 is a genuine virulence factor of C. fulvum. Heterologous expressio ...[more]

PMID: 18660430

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Project description:A LysM Receptor-like Kinase Mediates Chitin Perception and Fungal Resistance in Arabidopsis; Jinrong Wan,1 Xuecheng Zhang,1 David Neece,2 Katrina M. Ramonell,3 Steve Clough,2,4 Sung-yong Kim,1 Minviluz Stacey,1 and Gary Stacey1*; 1Division of Plant Sciences, National Center for Soybean Biotechnology, C.S. Bond Life Sciences Center, University of Missouri-Columbia, Columbia, MO 65211, USA; 2Department of Crop Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; 3Department of Biological Sciences, University of Alabama, Tuscaloosa, AL 35487, USA; 4US Department of Agriculture, Soybean/Maize Germplasm, Pathology and Genetics Research, Urbana, IL 61801, USA; *To whom correspondence should be addressed. E-mail: staceyg@missouri.edu; Abstract: Chitin, a polymer of N-acetyl-D-glucosamine, is found in fungal cell walls, but not in plants. Plant cells are capable of perceiving chitin fragments (chitooligosaccharides) to trigger various defense responses. We identified a LysM receptor-like protein (AtLysM RLK1) that is required for the perception of chitooligosaccharides in Arabidopsis. Mutation of this gene blocked the induction of almost all chitooligosaccharide-responsive genes (CRGs) and led to more susceptibility to fungal pathogens, but not to a bacterial pathogen. In addition, exogenously applied chitooligosaccharides enhanced resistance against both fungal and bacterial pathogens in the wild-type plants, but not in the mutant. Together, our data strongly suggest AtLysM RLK1 is the chitin receptor or a key part of the receptor complex and chitin is a PAMP (pathogen-associated molecular pattern) in fungi recognized by the receptor leading to the induction of plant innate immunity against fungal pathogens. Since LysM RLKs were also recently shown to be critical for the perception of the rhizobial lipo-chitin Nod signals, our data suggest that LysM RLKs not just recognize friendly symbiotic rhizobia (via their lipo-chitin Nod signals), but also hostile fungal pathogens (via their cell wall chitin). These data suggest a possible evolutionary relationship between the perception mechanisms of Nod signals and chitin by plants. Experiment Overall Design: wild type Col-0 and chitin receptor mutants treated with or without chitooctaose

Dataset Information

Transcription profiling by array of Arabidopsis expressing Cladosporium fulvum virulence protein Avr2

Publications

The Cladosporium fulvum virulence protein Avr2 inhibits host proteases required for basal defense.

Similar Datasets

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