Phytophthora infestans isolates lacking class I ipiO variants are virulent on Rpi-blb1 potato
| Autor: | Chris Maliepaard, Vivianne G. A. A. Vleeshouwers, Klaas Bouwmeester, Theo van der Lee, Nicolas Champouret, Evert Jacobsen, Hendrik Rietman, Peter J. I. van de Vondervoort, Francine Govers, Richard G. F. Visser, Anika Heupink, Edwin A. G. van der Vossen |
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| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
Physiology
Phytophthora infestans Population Molecular Sequence Data late blight resistance population-structure Nicotiana benthamiana broad-spectrum resistance Biology Plant disease resistance Fungal Proteins cultivated potato Laboratorium voor Plantenveredeling PRI Biodiversiteit en Veredeling solanum-bulbocastanum Botany Solanum bulbocastanum Blight education Phylogeny Plant Diseases Solanum tuberosum Genetics nevado-de-toluca education.field_of_study Genetic diversity Biointeracties and Plant Health Virulence EPS-2 downy mildew Gene Expression Profiling fungi central mexico Genetic Variation food and beverages General Medicine R gene biology.organism_classification cell-death Laboratorium voor Phytopathologie PRI Biodiversity and Breeding Plant Breeding Gene Expression Regulation Laboratory of Phytopathology PRI Biointeractions en Plantgezondheid Agronomy and Crop Science mediated plant transformation |
| Zdroj: | Molecular Plant-Microbe Interactions 22 (2009) 12 Molecular Plant-Microbe Interactions, 22(12), 1535-1545 |
| ISSN: | 0894-0282 |
| Popis: | A strategy to control the devastating late blight disease is providing potato cultivars with genes that are effective in resistance to a broad spectrum of Phytophthora infestans isolates. Thus far, most late blight resistance (R) genes that were introgressed in potato were quickly defeated. In contrast, the Rpi-blb1 gene originating from Solanum bulbocastanum has performed as an exclusive broad-spectrum R gene for many years. Recently, the RXLR effector family ipiO was identified to contain Avr-blb1. Monitoring the genetic diversity of the ipiO family in a large set of isolates of P. infestans and related species resulted in 16 ipiO variants in three distinct classes. Class I and class II but not class III ipiO variants induce cell death when coinfiltrated with Rpi-blb1 in Nicotiana benthamiana. Class I is highly diverse and is represented in all analyzed P. infestans isolates except two Mexican P. infestans isolates, and these were found virulent on Rpi-blb1 plants. In its C-terminal domain, IPI-O contains a W motif that is essential for triggering Rpi-blb1–mediated cell death and is under positive selection. This study shows that profiling the variation of Avr-blb1 within a P. infestans population is instrumental for predicting the effectiveness of Rpi-blb1–mediated resistance in potato. |
| Databáze: | OpenAIRE |
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