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The novel gene Ny-1 on potato chromosome IX confers hypersensitive resistance to Potato virus Y and is an alternative to Ry genes in potato breeding for PVY resistance

Hypersensitive resistance (HR) is an efficient defense strategy in plants that restricts pathogen growth and can be activated during host as well as non-host interactions. HR involves programmed cell death and manifests itself in tissue collapse at the site of pathogen attack. A novel hypersensitivi...

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Autores principales: Szajko, K., Chrzanowska, M., Witek, K., Strzelczyk-Żyta, D., Zagórska, H., Gebhardt, C., Hennig, J., Marczewski, W.
Formato: Texto
Lenguaje:English
Publicado: Springer-Verlag 2007
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2755788/
https://www.ncbi.nlm.nih.gov/pubmed/17985110
http://dx.doi.org/10.1007/s00122-007-0667-1
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author Szajko, K.
Chrzanowska, M.
Witek, K.
Strzelczyk-Żyta, D.
Zagórska, H.
Gebhardt, C.
Hennig, J.
Marczewski, W.
author_facet Szajko, K.
Chrzanowska, M.
Witek, K.
Strzelczyk-Żyta, D.
Zagórska, H.
Gebhardt, C.
Hennig, J.
Marczewski, W.
author_sort Szajko, K.
collection PubMed
description Hypersensitive resistance (HR) is an efficient defense strategy in plants that restricts pathogen growth and can be activated during host as well as non-host interactions. HR involves programmed cell death and manifests itself in tissue collapse at the site of pathogen attack. A novel hypersensitivity gene, Ny-1, for resistance to Potato virus Y (PVY) was revealed in potato cultivar Rywal. This is the first gene that confers HR in potato plants both to common and necrotic strains of PVY. The locus Ny-1 mapped on the short arm of potato chromosome IX, where various resistance genes are clustered in Solanaceous genomes. Expression of HR was temperature-dependent in cv. Rywal. Strains PVY(O) and PVY(N), including subgroups PVY(N)W and PVY(NTN), were effectively localized when plants were grown at 20°C. At 28°C, plants were systemically infected but no symptoms were observed. In field trials, PVY was restricted to the inoculated leaves and PVY-free tubers were produced. Therefore, the gene Ny-1 can be useful for potato breeding as an alternative donor of PVY resistance, because it is efficacious in practice-like resistance conferred by Ry genes.
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spelling pubmed-27557882009-10-07 The novel gene Ny-1 on potato chromosome IX confers hypersensitive resistance to Potato virus Y and is an alternative to Ry genes in potato breeding for PVY resistance Szajko, K. Chrzanowska, M. Witek, K. Strzelczyk-Żyta, D. Zagórska, H. Gebhardt, C. Hennig, J. Marczewski, W. Theor Appl Genet Original Paper Hypersensitive resistance (HR) is an efficient defense strategy in plants that restricts pathogen growth and can be activated during host as well as non-host interactions. HR involves programmed cell death and manifests itself in tissue collapse at the site of pathogen attack. A novel hypersensitivity gene, Ny-1, for resistance to Potato virus Y (PVY) was revealed in potato cultivar Rywal. This is the first gene that confers HR in potato plants both to common and necrotic strains of PVY. The locus Ny-1 mapped on the short arm of potato chromosome IX, where various resistance genes are clustered in Solanaceous genomes. Expression of HR was temperature-dependent in cv. Rywal. Strains PVY(O) and PVY(N), including subgroups PVY(N)W and PVY(NTN), were effectively localized when plants were grown at 20°C. At 28°C, plants were systemically infected but no symptoms were observed. In field trials, PVY was restricted to the inoculated leaves and PVY-free tubers were produced. Therefore, the gene Ny-1 can be useful for potato breeding as an alternative donor of PVY resistance, because it is efficacious in practice-like resistance conferred by Ry genes. Springer-Verlag 2007-11-06 2008-01 /pmc/articles/PMC2755788/ /pubmed/17985110 http://dx.doi.org/10.1007/s00122-007-0667-1 Text en © Springer-Verlag 2007
spellingShingle Original Paper
Szajko, K.
Chrzanowska, M.
Witek, K.
Strzelczyk-Żyta, D.
Zagórska, H.
Gebhardt, C.
Hennig, J.
Marczewski, W.
The novel gene Ny-1 on potato chromosome IX confers hypersensitive resistance to Potato virus Y and is an alternative to Ry genes in potato breeding for PVY resistance
title The novel gene Ny-1 on potato chromosome IX confers hypersensitive resistance to Potato virus Y and is an alternative to Ry genes in potato breeding for PVY resistance
title_full The novel gene Ny-1 on potato chromosome IX confers hypersensitive resistance to Potato virus Y and is an alternative to Ry genes in potato breeding for PVY resistance
title_fullStr The novel gene Ny-1 on potato chromosome IX confers hypersensitive resistance to Potato virus Y and is an alternative to Ry genes in potato breeding for PVY resistance
title_full_unstemmed The novel gene Ny-1 on potato chromosome IX confers hypersensitive resistance to Potato virus Y and is an alternative to Ry genes in potato breeding for PVY resistance
title_short The novel gene Ny-1 on potato chromosome IX confers hypersensitive resistance to Potato virus Y and is an alternative to Ry genes in potato breeding for PVY resistance
title_sort novel gene ny-1 on potato chromosome ix confers hypersensitive resistance to potato virus y and is an alternative to ry genes in potato breeding for pvy resistance
topic Original Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2755788/
https://www.ncbi.nlm.nih.gov/pubmed/17985110
http://dx.doi.org/10.1007/s00122-007-0667-1
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