| Specific HR-associated recognition of secreted proteins from Cladosporium fulvum occurs in both host and non-host plants. | |
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MedLine Citation:
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PMID: 10998185 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The resistance of tomato (Lycopersicon esculentum) to the pathogenic fungus Cladosporium fulvum complies with the gene-for-gene concept. Host resistance is based on specific recognition of extracellular fungal proteins, resulting in a hypersensitive response (HR). Five proteins secreted by C. fulvum were purified and the encoding cDNA clone was obtained from two novel ones among them. Various tomato breeding lines and accessions of Lycopersicon pimpinellifolium were tested for their recognitional specificity by injection of the purified proteins or potato virus X-based expression of the cDNA. We found that HR-associated recognition of one or more of these proteins, in addition to recognition of the race-specific elicitors AVR4 and AVR9 of C. fulvum, occurs among Lycopersicon species. Studies on the inheritance of this recognition confirmed that single dominant genes are involved. Furthermore, one of the extracellular proteins of C. fulvum is specifically recognized by Nicotiana paniculata, which is not a host for C. fulvum. These results indicate that plants have a highly effective surveillance system for the presence of 'foreign' proteins, which, together with the high mutation rate of pathogens, can explain the complex gene-for-gene relationships frequently observed in pathosystems. |
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Authors:
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R Laugé; P H Goodwin; P J de Wit; M H Joosten |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: The Plant journal : for cell and molecular biology Volume: 23 ISSN: 0960-7412 ISO Abbreviation: Plant J. Publication Date: 2000 Sep |
Date Detail:
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Created Date: 2000-12-06 Completed Date: 2000-12-06 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9207397 Medline TA: Plant J Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 735-45 Citation Subset: IM |
Affiliation:
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Laboratory of Phytopathology, Wageningen University, Binnenhaven 9, 6709 PD Wageningen, The Netherlands. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Amino Acid Sequence Base Sequence Cladosporium / metabolism* DNA, Complementary DNA, Fungal Fungal Proteins / genetics, metabolism* Lycopersicon esculentum / microbiology Molecular Sequence Data Open Reading Frames |
| Chemical | |
Reg. No./Substance:
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0/DNA, Complementary; 0/DNA, Fungal; 0/ECP4 protein, Cladosporium fulvum; 0/ECP5 protein, Cladosporium fulvum; 0/Fungal Proteins |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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