Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 61841
Title The fungal gene Avr9 and the oomycete gene inf1 confer avirulence to potato virus X on tobacco
Author(s) Kamoun, S.; Honée, G.; Weide, R.; Laugé, R.; Kooman-Gersmann, M.; Groot, K. de; Govers, F.; Wit, P.J.G.M. de
Source Molecular Plant-Microbe Interactions 12 (1999)5. - ISSN 0894-0282 - p. 459 - 462.
Department(s) Laboratory of Phytopathology
Publication type Refereed Article in a scientific journal
Publication year 1999
Abstract The AVR9 peptide of the fungal pathogen Cladosporium fulvum and the INF1 protein of the oomycete pathogen Phytophthora infestans elicit the hypersensitive response (HR) on Cf9 tomato or Cf-9 transgenic tobacco and on all cultivars of tobacco, respectively. Expression of either the functional Avr9 or inf1 genes from engineered potato virus X (PVX) genomes resulted in localized HR lesions on tobacco plants responsive to the elicitors and inhibited spread of the recombinant virus. In contrast, PVX derivatives producing mutant forms of AVR9 and INF1 with reduced elicitor activity caused systemic necrotic and/or mosaic symptoms, and were unable to inhibit PVX spread. These results demonstrate that HR is a highly versatile defense mechanism active against unrelated pathogens irrespective of the HR-inducing agent, and that resistance to recombinant PVX in tobacco is correlated with the strength of the transgene-encoded elicitor.
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