Genome-wide association study (GWAS) of adult plant resistance to spot blotch in an elite Canadian two-row barley germplasm collection

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creativework.keywords - en
barley
spot blotch
common root rot
genome wide association study
creativework.keywords - fr
tache helminthosporienne
étude d'association pangénomique
piétin commun
orge
dc.contributor.author
Tucker, James R.
Badea, Anna
Fernando, W. G. Dilantha
Hiebert, Colin W.
Woitas, Alexander C.
Beattie, Aaron D.
dc.date.accepted
2024-03-05
dc.date.accessioned
2024-05-10T19:09:27Z
dc.date.available
2024-05-10T19:09:27Z
dc.date.issued
2024-04-04
dc.date.submitted
2024-03-05
dc.description.abstract - en
Spot blotch, caused by Bipolaris sorokiniana, is a growing concern for barley (Hordeum vulgare) production in most humid, temperate growing regions of the world. Under epidemic conditions, this disease can reduce yields significantly. Reduction of kernel plumpness is associated with lower malt extract and consequently grain quality. Enhanced resistance to this disease is a major goal of western Canadian two-row barley breeding programmes; however, two-row barley is considered to be more susceptible than six-row barley. Plant–pathogen interactions observed for Canadian germplasm are polygenic, where quantitative breeding methods could be beneficial for the development of resistant germplasm. A germplasm panel consisting of 200 two-row, spring barley genotypes with differential reaction to spot blotch was evaluated at Brandon, Manitoba (MB), and Melfort, Saskatchewan (SK), over eight site years. Genome-wide association study was conducted using a 50k single-nucleotide polymorphism (SNP) Illumina iSelect genotyping array. The most-resistant germplasm was found to carry Midwest Six-rowed Durable Resistant Haplotype (MSDRH) alleles at the loci located on chromosomes 1H (Rcs-qtl-1H-11_10764), 3H (Rcs-qtl-3H-11_10565) and 7H (Rcs-qtl-7H-11_20162, Rcs5 locus), where the 3H locus was found to be the most under-represented in Canadian germplasm. Additional marker-trait associations within nurseries were identified on chromosomes 1H, 2H and 4H. Several of the SNP markers identified were found to be polymorphic within the Canadian two-row germplasm panel and thus could be useful for enhancing spot blotch resistance in two-row barley for development of resistant cultivars.
dc.identifier.citation
Tucker, J. R., Badea, A., Fernando, W. G. D., Hiebert, C. W., Woitas, A. C., & Beattie, A. D. (2024). Genome-wide association study (GWAS) of adult plant resistance to spot blotch in an elite Canadian two-row barley germplasm collection. Plant Pathology, 73(6), 1-12. https://doi.org/10.1111/ppa.13896
dc.identifier.doi
https://doi.org/10.1111/ppa.13896
dc.identifier.issn
1365-3059
0032-0862
dc.identifier.uri
https://open-science.canada.ca/handle/123456789/2489
dc.language.iso
en
dc.publisher
British Society for Plant Pathology
dc.rights - en
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
dc.rights - fr
Creative Commons Attribution - Pas d'utilisation commerciale - Pas de modification 4.0 International (CC BY-NC-ND 4.0)
dc.rights.openaccesslevel - en
Green
dc.rights.openaccesslevel - fr
Vert
dc.rights.uri - en
https://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.uri - fr
https://creativecommons.org/licenses/by-nc-nd/4.0/deed.fr
dc.subject - en
Nature and environment
dc.subject - fr
Nature et environnement
dc.subject.en - en
Nature and environment
dc.subject.fr - fr
Nature et environnement
dc.title - en
Genome-wide association study (GWAS) of adult plant resistance to spot blotch in an elite Canadian two-row barley germplasm collection
dc.type - en
Article
dc.type - fr
Article
local.article.journalissue
6
local.article.journaltitle
Plant Pathology
local.article.journalvolume
73
local.pagination
1-12
local.peerreview - en
Yes
local.peerreview - fr
Oui
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