Genome-wide association study for resistance in bread wheat (Triticum aestivum L.) to stripe rust (Puccinia striiformis f. sp. tritici) races in Argentina
Background: Wheat stripe rust, caused by Puccinia striiformis f. sp. tritici (Pst), is one of the most devastating diseases of the wheat crop. It causes significant reductions in both grain yield and grain quality. In recent years, new and more virulent races have overcome many of the known resistan...
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| Format: | info:ar-repo/semantics/artículo |
| Language: | Inglés |
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BioMed Central
2022
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| Online Access: | http://hdl.handle.net/20.500.12123/13545 https://bmcplantbiol.biomedcentral.com/articles/10.1186/s12870-022-03916-y https://doi.org/10.1186/s12870-022-03916-y |
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| author | Franco, Maria Fiorella Polacco, A.N. Campos, Pablo Eduardo Pontaroli, Ana Clara Vanzetti, Leonardo Sebastian |
| author_browse | Campos, Pablo Eduardo Franco, Maria Fiorella Polacco, A.N. Pontaroli, Ana Clara Vanzetti, Leonardo Sebastian |
| author_facet | Franco, Maria Fiorella Polacco, A.N. Campos, Pablo Eduardo Pontaroli, Ana Clara Vanzetti, Leonardo Sebastian |
| author_sort | Franco, Maria Fiorella |
| collection | INTA Digital |
| description | Background: Wheat stripe rust, caused by Puccinia striiformis f. sp. tritici (Pst), is one of the most devastating diseases of the wheat crop. It causes significant reductions in both grain yield and grain quality. In recent years, new and more virulent races have overcome many of the known resistance genes in Argentinian germplasm. In order to identify loci conferring resistance to the local races of Pst for effective utilization in future breeding programs, a genome-wide association study (GWAS) was performed using a collection of 245 bread wheat lines genotyped with 90 K SNPs.
Results: To search for adult plant resistance (APR) the panel was evaluated for disease severity (DS) and area under disease progress curve (AUDPC) in field trials during two years under natural infection conditions. To look for seedling or all-stage resistance (ASR) the panel was evaluated to determine infection type (IT) under greenhouse conditions against two prevalent races in Argentina. The phenotypic data showed that the panel possessed enough genetic variability for searching for sources of resistance to Pst. Significant correlations between years were observed for Pst response in the field and high heritability values were found for DS (H2 = 0.89) and AUDPC (H2 = 0.93). Based on GWAS, eight markers associated with Pst resistance (FDR < 0.01) were identified, of these, five were associated with ASR (on chromosomes 1B, 2A, 3A and 5B) and three with APR (on chromosomes 3B and 7A). These markers explained between 2% and 32.62% of the phenotypic variation. Five of the markers corresponded with previously reported Yr genes/QTL, while the other three (QYr.Bce.1B.sd.1, QYr.Bce.3A.sd and QYr.Bce.3B.APR.2) might be novel resistance loci.
Conclusion: Our results revealed high genetic variation for resistance to Argentinian stripe rust races in the germplasm used here. It constitutes a very promising step towards the improvement of Pst resistance of bread wheat in Argentina. Also, the identification of new resistance loci would represent a substantial advance for diversifying the current set of resistance genes and to advance in the improvement of the durable resistance to the disease. |
| format | info:ar-repo/semantics/artículo |
| id | INTA13545 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | BioMed Central |
| publisherStr | BioMed Central |
| record_format | dspace |
| spelling | INTA135452022-12-06T18:16:19Z Genome-wide association study for resistance in bread wheat (Triticum aestivum L.) to stripe rust (Puccinia striiformis f. sp. tritici) races in Argentina Franco, Maria Fiorella Polacco, A.N. Campos, Pablo Eduardo Pontaroli, Ana Clara Vanzetti, Leonardo Sebastian Genomas Polimorfismo de un solo Nucleótido Resistencia de la Planta Adulta Trigo Harinero Roya Argentina Genomes Single Nucleotide de Polymorphism Adult Plant Resistance Soft Wheat Rusts Background: Wheat stripe rust, caused by Puccinia striiformis f. sp. tritici (Pst), is one of the most devastating diseases of the wheat crop. It causes significant reductions in both grain yield and grain quality. In recent years, new and more virulent races have overcome many of the known resistance genes in Argentinian germplasm. In order to identify loci conferring resistance to the local races of Pst for effective utilization in future breeding programs, a genome-wide association study (GWAS) was performed using a collection of 245 bread wheat lines genotyped with 90 K SNPs. Results: To search for adult plant resistance (APR) the panel was evaluated for disease severity (DS) and area under disease progress curve (AUDPC) in field trials during two years under natural infection conditions. To look for seedling or all-stage resistance (ASR) the panel was evaluated to determine infection type (IT) under greenhouse conditions against two prevalent races in Argentina. The phenotypic data showed that the panel possessed enough genetic variability for searching for sources of resistance to Pst. Significant correlations between years were observed for Pst response in the field and high heritability values were found for DS (H2 = 0.89) and AUDPC (H2 = 0.93). Based on GWAS, eight markers associated with Pst resistance (FDR < 0.01) were identified, of these, five were associated with ASR (on chromosomes 1B, 2A, 3A and 5B) and three with APR (on chromosomes 3B and 7A). These markers explained between 2% and 32.62% of the phenotypic variation. Five of the markers corresponded with previously reported Yr genes/QTL, while the other three (QYr.Bce.1B.sd.1, QYr.Bce.3A.sd and QYr.Bce.3B.APR.2) might be novel resistance loci. Conclusion: Our results revealed high genetic variation for resistance to Argentinian stripe rust races in the germplasm used here. It constitutes a very promising step towards the improvement of Pst resistance of bread wheat in Argentina. Also, the identification of new resistance loci would represent a substantial advance for diversifying the current set of resistance genes and to advance in the improvement of the durable resistance to the disease. EEA Balcarce Fil: Franco, María Fiorella. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Fil: Franco, María Fiorella. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Franco, María Fiorella. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Fil: Polacco, A. N. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Fil: Campos, P. E. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bordenave; Argentina. Fil: Pontaroli, Ana Clara. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Fil: Pontaroli, Ana Clara. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fil: Vanzetti, Leonardo Sebastián. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Marcos Juárez; Argentina. 2022-12-06T18:04:24Z 2022-12-06T18:04:24Z 2022-11-24 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/13545 https://bmcplantbiol.biomedcentral.com/articles/10.1186/s12870-022-03916-y 1471-2229 https://doi.org/10.1186/s12870-022-03916-y eng info:eu-repograntAgreement/INTA/2019-PE-E6-I126-001/2019-PE-E6-I126-001/AR./Mejoramiento genético de trigo pan (Triticum aestivum L.) y trigo candeal (Triticum turgidum ssp. durum Desf.) info:eu-repo/semantics/openAccess 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 BioMed Central BMC Plant Biology 22 : 543 (November 2022) |
| spellingShingle | Genomas Polimorfismo de un solo Nucleótido Resistencia de la Planta Adulta Trigo Harinero Roya Argentina Genomes Single Nucleotide de Polymorphism Adult Plant Resistance Soft Wheat Rusts Franco, Maria Fiorella Polacco, A.N. Campos, Pablo Eduardo Pontaroli, Ana Clara Vanzetti, Leonardo Sebastian Genome-wide association study for resistance in bread wheat (Triticum aestivum L.) to stripe rust (Puccinia striiformis f. sp. tritici) races in Argentina |
| title | Genome-wide association study for resistance in bread wheat (Triticum aestivum L.) to stripe rust (Puccinia striiformis f. sp. tritici) races in Argentina |
| title_full | Genome-wide association study for resistance in bread wheat (Triticum aestivum L.) to stripe rust (Puccinia striiformis f. sp. tritici) races in Argentina |
| title_fullStr | Genome-wide association study for resistance in bread wheat (Triticum aestivum L.) to stripe rust (Puccinia striiformis f. sp. tritici) races in Argentina |
| title_full_unstemmed | Genome-wide association study for resistance in bread wheat (Triticum aestivum L.) to stripe rust (Puccinia striiformis f. sp. tritici) races in Argentina |
| title_short | Genome-wide association study for resistance in bread wheat (Triticum aestivum L.) to stripe rust (Puccinia striiformis f. sp. tritici) races in Argentina |
| title_sort | genome wide association study for resistance in bread wheat triticum aestivum l to stripe rust puccinia striiformis f sp tritici races in argentina |
| topic | Genomas Polimorfismo de un solo Nucleótido Resistencia de la Planta Adulta Trigo Harinero Roya Argentina Genomes Single Nucleotide de Polymorphism Adult Plant Resistance Soft Wheat Rusts |
| url | http://hdl.handle.net/20.500.12123/13545 https://bmcplantbiol.biomedcentral.com/articles/10.1186/s12870-022-03916-y https://doi.org/10.1186/s12870-022-03916-y |
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