Virulence characterization of Puccinia graminis f. sp. avenae in Argentina
Oat stem rust, caused by Puccinia graminis f. sp. avenae Erikss and Henning (Pga), is a disease of considerable relevance on a global scale, recognized for its destructive capacity under favorable environmental conditions. The characterization of the Pga population provides valuable insights into si...
| Autores principales: | , , , |
|---|---|
| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
| Publicado: |
Springer
2025
|
| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/21695 https://link.springer.com/article/10.1007/s10658-025-03004-5 https://doi.org/10.1007/s10658-025-03004-5 |
| _version_ | 1855038449037344768 |
|---|---|
| author | Dietz, Juan Ignacio Da Silva, Laura Victoria Simón, María Rosa Campos, Pablo Eduardo |
| author_browse | Campos, Pablo Eduardo Da Silva, Laura Victoria Dietz, Juan Ignacio Simón, María Rosa |
| author_facet | Dietz, Juan Ignacio Da Silva, Laura Victoria Simón, María Rosa Campos, Pablo Eduardo |
| author_sort | Dietz, Juan Ignacio |
| collection | INTA Digital |
| description | Oat stem rust, caused by Puccinia graminis f. sp. avenae Erikss and Henning (Pga), is a disease of considerable relevance on a global scale, recognized for its destructive capacity under favorable environmental conditions. The characterization of the Pga population provides valuable insights into size, diversity, and complexity, and allows the identification of race-specific genes potentially useful for breeding. This study documents for the first time the structure and complexity of Pga populations collected in different sites in Argentina between 2021–2023 and compares it with a population sampled in 2005. We identified 22 different races among the 70 isolates collected during the period, showing a high level of diversity in the population. Moreover, most of the races identified in 2021, and all the races identified in 2022 and 2023 were different from those found in 2005. We reported that current populations are more virulent and complex, and the predominant “race 11” demonstrated virulence against all 11 differential oat lines used in this study, emphasizing its potential threat to oat cultivation in Argentina. The change in population dynamics detected here suggests that the use of a few genes as a basis for resistance to stem rust in the Argentinian germplasm has resulted in the continuous selection of Pga phenotypes with virulence to these resistance genes. Additionally, our results demonstrated that the frequency of virulence of Pga isolates increased on most of the resistance genes compared to the 2005 population, and there are no genes potentially useful for breeding under Argentinian conditions. These findings underscore the pressing need to expand our search for new resistance genes and deepen our understanding of the genetic mechanisms governing resistance to stem rust in oats. Moreover, our research highlights the dynamic nature of plant-pathogen interactions, emphasizing the evolution of Pga populations and their interaction with Pga genes. |
| format | info:ar-repo/semantics/artículo |
| id | INTA21695 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | INTA216952025-03-18T13:05:26Z Virulence characterization of Puccinia graminis f. sp. avenae in Argentina Dietz, Juan Ignacio Da Silva, Laura Victoria Simón, María Rosa Campos, Pablo Eduardo Puccinia graminis Roya del Tallo Virulencia Enfermedades de las Plantas Argentina Stem Rust Virulence Plant Diseases Oats Avenas Puccinia graminis f. sp. avenae Oat stem rust, caused by Puccinia graminis f. sp. avenae Erikss and Henning (Pga), is a disease of considerable relevance on a global scale, recognized for its destructive capacity under favorable environmental conditions. The characterization of the Pga population provides valuable insights into size, diversity, and complexity, and allows the identification of race-specific genes potentially useful for breeding. This study documents for the first time the structure and complexity of Pga populations collected in different sites in Argentina between 2021–2023 and compares it with a population sampled in 2005. We identified 22 different races among the 70 isolates collected during the period, showing a high level of diversity in the population. Moreover, most of the races identified in 2021, and all the races identified in 2022 and 2023 were different from those found in 2005. We reported that current populations are more virulent and complex, and the predominant “race 11” demonstrated virulence against all 11 differential oat lines used in this study, emphasizing its potential threat to oat cultivation in Argentina. The change in population dynamics detected here suggests that the use of a few genes as a basis for resistance to stem rust in the Argentinian germplasm has resulted in the continuous selection of Pga phenotypes with virulence to these resistance genes. Additionally, our results demonstrated that the frequency of virulence of Pga isolates increased on most of the resistance genes compared to the 2005 population, and there are no genes potentially useful for breeding under Argentinian conditions. These findings underscore the pressing need to expand our search for new resistance genes and deepen our understanding of the genetic mechanisms governing resistance to stem rust in oats. Moreover, our research highlights the dynamic nature of plant-pathogen interactions, emphasizing the evolution of Pga populations and their interaction with Pga genes. EEA Bordenave Fil: Dietz, Juan Ignacio. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales. Cátedra de Cerealicultura; Argentina. Fil: Dietz, Juan Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Dietz, Juan Ignacio. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bordenave; Argentina. Fil: Da Silva, Laura Victoria. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales. Cátedra de Cerealicultura; Argentina. Fil: Da Silva, Laura Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Da Silva, Laura Victoria. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bordenave; Argentina. Fil: Simon, Maria Rosa. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales. Cátedra de Cerealicultura; Argentina. Fil: Simon, Maria Rosa. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Campos, Pablo Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bordenave; Argentina 2025-03-18T13:00:05Z 2025-03-18T13:00:05Z 2025-01 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/21695 https://link.springer.com/article/10.1007/s10658-025-03004-5 0929-1873 1573-8469 https://doi.org/10.1007/s10658-025-03004-5 eng info:eu-repo/semantics/restrictedAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Argentina .......... (nation) (World, South America) 7006477 Springer European Journal of Plant Pathology : 1-10. (Published: 27 January 2025) |
| spellingShingle | Puccinia graminis Roya del Tallo Virulencia Enfermedades de las Plantas Argentina Stem Rust Virulence Plant Diseases Oats Avenas Puccinia graminis f. sp. avenae Dietz, Juan Ignacio Da Silva, Laura Victoria Simón, María Rosa Campos, Pablo Eduardo Virulence characterization of Puccinia graminis f. sp. avenae in Argentina |
| title | Virulence characterization of Puccinia graminis f. sp. avenae in Argentina |
| title_full | Virulence characterization of Puccinia graminis f. sp. avenae in Argentina |
| title_fullStr | Virulence characterization of Puccinia graminis f. sp. avenae in Argentina |
| title_full_unstemmed | Virulence characterization of Puccinia graminis f. sp. avenae in Argentina |
| title_short | Virulence characterization of Puccinia graminis f. sp. avenae in Argentina |
| title_sort | virulence characterization of puccinia graminis f sp avenae in argentina |
| topic | Puccinia graminis Roya del Tallo Virulencia Enfermedades de las Plantas Argentina Stem Rust Virulence Plant Diseases Oats Avenas Puccinia graminis f. sp. avenae |
| url | http://hdl.handle.net/20.500.12123/21695 https://link.springer.com/article/10.1007/s10658-025-03004-5 https://doi.org/10.1007/s10658-025-03004-5 |
| work_keys_str_mv | AT dietzjuanignacio virulencecharacterizationofpucciniagraminisfspavenaeinargentina AT dasilvalauravictoria virulencecharacterizationofpucciniagraminisfspavenaeinargentina AT simonmariarosa virulencecharacterizationofpucciniagraminisfspavenaeinargentina AT campospabloeduardo virulencecharacterizationofpucciniagraminisfspavenaeinargentina |