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Genome-wide association study for spot blotch resistance in synthetic hexaploid wheat

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Title Genome-wide association study for spot blotch resistance in synthetic hexaploid wheat
 
Creator Lozano-Ramirez, Nerida
Dreisigacker, Susanne
Sansaloni, Carolina P.
He, Xinyao
Sandoval-Islas, Sergio
Perez-Rodriguez, Paulino
Carballo-Carballo, Aquiles
Nava Díaz, Cristian
Kishii, Masahiro
Singh, Pawan K.
 
Subject foliar diseases
Bipolaris sorokiniana
fungal diseases
disease resistance
wheat
 
Description 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.
 
Date 2022-08-04
2023-01-05T09:16:34Z
2023-01-05T09:16:34Z
 
Type Journal Article
 
Identifier 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
 
Language en
 
Rights CC-BY-4.0
Open Access
 
Format application/pdf
 
Source Genes