The Helper Component Proteinase Cistron of Potato virus Y Induces Hypersensitivity and Resistance in Potato Genotypes Carrying Dominant Resistance Genes on Chromosome IV
The Nctbr and Nytbr genes in Solanum tuberosum determine hypersensitive reactions, characterized by necrotic reactions and restriction of the virus systemic movement, toward isolates belonging to clade C and clade O of Potato virus Y (PVY), respectively. We describe a new resistance from S. sparsipi...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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The American Phytopathological Society
2011-07-01
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| Series: | Molecular Plant-Microbe Interactions |
| Online Access: | https://apsjournals.apsnet.org/doi/10.1094/MPMI-10-10-0246 |
| _version_ | 1818647029896708096 |
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| author | Benoît Moury Bernard Caromel Elisabeth Johansen Vincent Simon Laura Chauvin Emmanuel Jacquot Camille Kerlan Véronique Lefebvre |
| author_facet | Benoît Moury Bernard Caromel Elisabeth Johansen Vincent Simon Laura Chauvin Emmanuel Jacquot Camille Kerlan Véronique Lefebvre |
| author_sort | Benoît Moury |
| collection | DOAJ |
| description | The Nctbr and Nytbr genes in Solanum tuberosum determine hypersensitive reactions, characterized by necrotic reactions and restriction of the virus systemic movement, toward isolates belonging to clade C and clade O of Potato virus Y (PVY), respectively. We describe a new resistance from S. sparsipilum which possesses the same phenotype and specificity as Nctbr and is controlled by a dominant gene designated Ncspl. Ncspl maps on potato chromosome IV close or allelic to Nytbr. The helper component proteinase (HC-Pro) cistron of PVY was shown to control necrotic reactions and resistance elicitation in plants carrying Ncspl, Nctbr, and Nytbr. However, inductions of necrosis and of resistance to the systemic virus movement in plants carrying Ncspl reside in different regions of the HC-Pro cistron. Also, genomic determinants outside the HC-Pro cistron are involved in the systemic movement of PVY after induction of necroses on inoculated leaves of plants carrying Nytbr. These results suggest that the Nytbr resistance may have been involved in the recent emergence of PVY isolates with a recombination breakpoint near the junction of HC-Pro and P3 cistrons in potato crops. Therefore, this emergence could constitute one of the rare examples of resistance breakdown by a virus which was caused by recombination instead of by successive accumulation of nucleotide substitutions. |
| first_indexed | 2024-12-17T00:56:03Z |
| format | Article |
| id | doaj.art-923cb6b0cdcd4e5e86c4196a2958a5a9 |
| institution | Directory Open Access Journal |
| issn | 0894-0282 1943-7706 |
| language | English |
| last_indexed | 2024-12-17T00:56:03Z |
| publishDate | 2011-07-01 |
| publisher | The American Phytopathological Society |
| record_format | Article |
| series | Molecular Plant-Microbe Interactions |
| spelling | doaj.art-923cb6b0cdcd4e5e86c4196a2958a5a92022-12-21T22:09:37ZengThe American Phytopathological SocietyMolecular Plant-Microbe Interactions0894-02821943-77062011-07-0124778779710.1094/MPMI-10-10-0246The Helper Component Proteinase Cistron of Potato virus Y Induces Hypersensitivity and Resistance in Potato Genotypes Carrying Dominant Resistance Genes on Chromosome IVBenoît MouryBernard CaromelElisabeth JohansenVincent SimonLaura ChauvinEmmanuel JacquotCamille KerlanVéronique LefebvreThe Nctbr and Nytbr genes in Solanum tuberosum determine hypersensitive reactions, characterized by necrotic reactions and restriction of the virus systemic movement, toward isolates belonging to clade C and clade O of Potato virus Y (PVY), respectively. We describe a new resistance from S. sparsipilum which possesses the same phenotype and specificity as Nctbr and is controlled by a dominant gene designated Ncspl. Ncspl maps on potato chromosome IV close or allelic to Nytbr. The helper component proteinase (HC-Pro) cistron of PVY was shown to control necrotic reactions and resistance elicitation in plants carrying Ncspl, Nctbr, and Nytbr. However, inductions of necrosis and of resistance to the systemic virus movement in plants carrying Ncspl reside in different regions of the HC-Pro cistron. Also, genomic determinants outside the HC-Pro cistron are involved in the systemic movement of PVY after induction of necroses on inoculated leaves of plants carrying Nytbr. These results suggest that the Nytbr resistance may have been involved in the recent emergence of PVY isolates with a recombination breakpoint near the junction of HC-Pro and P3 cistrons in potato crops. Therefore, this emergence could constitute one of the rare examples of resistance breakdown by a virus which was caused by recombination instead of by successive accumulation of nucleotide substitutions.https://apsjournals.apsnet.org/doi/10.1094/MPMI-10-10-0246 |
| spellingShingle | Benoît Moury Bernard Caromel Elisabeth Johansen Vincent Simon Laura Chauvin Emmanuel Jacquot Camille Kerlan Véronique Lefebvre The Helper Component Proteinase Cistron of Potato virus Y Induces Hypersensitivity and Resistance in Potato Genotypes Carrying Dominant Resistance Genes on Chromosome IV Molecular Plant-Microbe Interactions |
| title | The Helper Component Proteinase Cistron of Potato virus Y Induces Hypersensitivity and Resistance in Potato Genotypes Carrying Dominant Resistance Genes on Chromosome IV |
| title_full | The Helper Component Proteinase Cistron of Potato virus Y Induces Hypersensitivity and Resistance in Potato Genotypes Carrying Dominant Resistance Genes on Chromosome IV |
| title_fullStr | The Helper Component Proteinase Cistron of Potato virus Y Induces Hypersensitivity and Resistance in Potato Genotypes Carrying Dominant Resistance Genes on Chromosome IV |
| title_full_unstemmed | The Helper Component Proteinase Cistron of Potato virus Y Induces Hypersensitivity and Resistance in Potato Genotypes Carrying Dominant Resistance Genes on Chromosome IV |
| title_short | The Helper Component Proteinase Cistron of Potato virus Y Induces Hypersensitivity and Resistance in Potato Genotypes Carrying Dominant Resistance Genes on Chromosome IV |
| title_sort | helper component proteinase cistron of potato virus y induces hypersensitivity and resistance in potato genotypes carrying dominant resistance genes on chromosome iv |
| url | https://apsjournals.apsnet.org/doi/10.1094/MPMI-10-10-0246 |
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