Genome-wide association study for spot blotch resistance in synthetic hexaploid wheat
Spot blotch (SB) caused by Bipolaris sorokiniana (Sacc.) Shoem is a destructive fungal disease affecting wheat and many other crops. Synthetic hexaploid wheat (SHW) offers opportunities to explore new resistance genes for SB for introgression into elite bread wheat. The objectives of our study were to evaluate a collection of 441 SHWs for resistance to SB and to identify potential new genomic regions associated with the disease. The panel exhibited high SB resistance, with 250 accessions showing resistance and 161 showing moderate resistance reactions. A genome-wide association study (GWAS) revealed a total of 41 significant marker-trait associations for resistance to SB, being located on chromosomes 1B, 1D, 2A, 2B, 2D, 3A, 3B, 3D, 4A, 4D, 5A, 5D, 6D, 7A, and 7D; yet none of them exhibited a major phenotypic effect. In addition, a partial least squares regression was conducted to validate the marker-trait associations, and 15 markers were found to be most important for SB resistance in the panel. To our knowledge, this is the first GWAS to investigate SB resistance in SHW that identified markers and resistant SHW lines to be utilized in wheat breeding.
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MDPI
2022-08-04
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Subjects: | foliar diseases, bipolaris sorokiniana, fungal diseases, disease resistance, wheat, |
Online Access: | https://hdl.handle.net/10568/126601 https://hdl.handle.net/10883/22198 https://doi.org/10.3390/genes13081387 |
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dig-cgspace-10568-1266012023-12-08T19:36:04Z Genome-wide association study for spot blotch resistance in synthetic hexaploid wheat Lozano Ramirez, Nerida Dreisigacker, Susanne Sansaloni, Carolina P. He, Xinyao Sandoval-Islas, Sergio Pérez Rodriguez, Paulino Carballo-Carballo, Aquiles Nava Díaz, Cristian Kishii, Masahiro Singh, Pawan K. foliar diseases bipolaris sorokiniana fungal diseases disease resistance wheat Spot blotch (SB) caused by Bipolaris sorokiniana (Sacc.) Shoem is a destructive fungal disease affecting wheat and many other crops. Synthetic hexaploid wheat (SHW) offers opportunities to explore new resistance genes for SB for introgression into elite bread wheat. The objectives of our study were to evaluate a collection of 441 SHWs for resistance to SB and to identify potential new genomic regions associated with the disease. The panel exhibited high SB resistance, with 250 accessions showing resistance and 161 showing moderate resistance reactions. A genome-wide association study (GWAS) revealed a total of 41 significant marker-trait associations for resistance to SB, being located on chromosomes 1B, 1D, 2A, 2B, 2D, 3A, 3B, 3D, 4A, 4D, 5A, 5D, 6D, 7A, and 7D; yet none of them exhibited a major phenotypic effect. In addition, a partial least squares regression was conducted to validate the marker-trait associations, and 15 markers were found to be most important for SB resistance in the panel. To our knowledge, this is the first GWAS to investigate SB resistance in SHW that identified markers and resistant SHW lines to be utilized in wheat breeding. 2022-08-04 2023-01-05T09:16:34Z 2023-01-05T09:16:34Z Journal Article Lozano-Ramirez, N., Dreisigacker, S., Sansaloni, C.P., He, X., Sandoval-Islas, J.S., Pérez-Rodríguez, P., Carballo, A.C., Diaz, C.N., Kishii, M. and Singh, P.K. 2022. Genome-wide association study for spot blotch resistance in synthetic hexaploid wheat. Genes 13(8):1387. https://hdl.handle.net/10883/22198 2073-4425 https://hdl.handle.net/10568/126601 https://hdl.handle.net/10883/22198 https://doi.org/10.3390/genes13081387 en CC-BY-4.0 Open Access application/pdf MDPI Genes |
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foliar diseases bipolaris sorokiniana fungal diseases disease resistance wheat foliar diseases bipolaris sorokiniana fungal diseases disease resistance wheat |
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foliar diseases bipolaris sorokiniana fungal diseases disease resistance wheat foliar diseases bipolaris sorokiniana fungal diseases disease resistance wheat Lozano Ramirez, Nerida Dreisigacker, Susanne Sansaloni, Carolina P. He, Xinyao Sandoval-Islas, Sergio Pérez Rodriguez, Paulino Carballo-Carballo, Aquiles Nava Díaz, Cristian Kishii, Masahiro Singh, Pawan K. Genome-wide association study for spot blotch resistance in synthetic hexaploid wheat |
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Spot blotch (SB) caused by Bipolaris sorokiniana (Sacc.) Shoem is a destructive fungal disease affecting wheat and many other crops. Synthetic hexaploid wheat (SHW) offers opportunities to explore new resistance genes for SB for introgression into elite bread wheat. The objectives of our study were to evaluate a collection of 441 SHWs for resistance to SB and to identify potential new genomic regions associated with the disease. The panel exhibited high SB resistance, with 250 accessions showing resistance and 161 showing moderate resistance reactions. A genome-wide association study (GWAS) revealed a total of 41 significant marker-trait associations for resistance to SB, being located on chromosomes 1B, 1D, 2A, 2B, 2D, 3A, 3B, 3D, 4A, 4D, 5A, 5D, 6D, 7A, and 7D; yet none of them exhibited a major phenotypic effect. In addition, a partial least squares regression was conducted to validate the marker-trait associations, and 15 markers were found to be most important for SB resistance in the panel. To our knowledge, this is the first GWAS to investigate SB resistance in SHW that identified markers and resistant SHW lines to be utilized in wheat breeding. |
format |
Journal Article |
topic_facet |
foliar diseases bipolaris sorokiniana fungal diseases disease resistance wheat |
author |
Lozano Ramirez, Nerida Dreisigacker, Susanne Sansaloni, Carolina P. He, Xinyao Sandoval-Islas, Sergio Pérez Rodriguez, Paulino Carballo-Carballo, Aquiles Nava Díaz, Cristian Kishii, Masahiro Singh, Pawan K. |
author_facet |
Lozano Ramirez, Nerida Dreisigacker, Susanne Sansaloni, Carolina P. He, Xinyao Sandoval-Islas, Sergio Pérez Rodriguez, Paulino Carballo-Carballo, Aquiles Nava Díaz, Cristian Kishii, Masahiro Singh, Pawan K. |
author_sort |
Lozano Ramirez, Nerida |
title |
Genome-wide association study for spot blotch resistance in synthetic hexaploid wheat |
title_short |
Genome-wide association study for spot blotch resistance in synthetic hexaploid wheat |
title_full |
Genome-wide association study for spot blotch resistance in synthetic hexaploid wheat |
title_fullStr |
Genome-wide association study for spot blotch resistance in synthetic hexaploid wheat |
title_full_unstemmed |
Genome-wide association study for spot blotch resistance in synthetic hexaploid wheat |
title_sort |
genome-wide association study for spot blotch resistance in synthetic hexaploid wheat |
publisher |
MDPI |
publishDate |
2022-08-04 |
url |
https://hdl.handle.net/10568/126601 https://hdl.handle.net/10883/22198 https://doi.org/10.3390/genes13081387 |
work_keys_str_mv |
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