Genetic mapping of host resistance to the Pyrenophora teres f. maculata isolate 13IM8.3 | Zendy

Abdullah Fahad Alhashel | Zendy; Roshan Sharma Poudel | Zendy; Jason D. Fiedler | Zendy; Craig H. Carlson | Zendy; J. B. Rasmussen | Zendy; Thomas Baldwin | Zendy; Timothy L. Friesen | Zendy; Robert Brueggeman | Zendy; Shengming Yang | Zendy

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Genetic mapping of host resistance to the Pyrenophora teres f. maculata isolate 13IM8.3

Author(s) -

Abdullah Fahad Alhashel,

Roshan Sharma Poudel,

Jason D. Fiedler,

Craig H. Carlson,

J. B. Rasmussen,

Thomas Baldwin,

Timothy L. Friesen,

Robert Brueggeman,

Shengming Yang

Publication year - 2021

Publication title -

g3 genes genomes genetics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.468

H-Index - 66

ISSN - 2160-1836

DOI - 10.1093/g3journal/jkab341

Subject(s) - biology , quantitative trait locus , genetics , single nucleotide polymorphism , host (biology) , family based qtl mapping , gene , plant disease resistance , genetic marker , genetic analysis , gene mapping , genotype , chromosome

Spot form net blotch (SFNB), caused by the necrotrophic fungal pathogen Pyrenophora teres f. maculata (Ptm), is a foliar disease of barley that results in significant yield losses in major growing regions worldwide. Understanding the host-parasite interactions between pathogen virulence/avirulence genes and the corresponding host susceptibility/resistance genes is important for the deployment of genetic resistance against SFNB. Two recombinant inbred mapping populations were developed to characterize genetic resistance/susceptibility to the Ptm isolate 13IM8.3, which was collected from Idaho (ID). An Illumina Infinium array was used to produce a genome-wide marker set. Quantitative trait loci (QTL) analysis identified ten significant resistance/susceptibility loci, with two of the QTL being common to both populations. One of the QTL on 5H appears to be novel, while the remaining loci have been reported previously. Single nucleotide polymorphisms (SNPs) closely linked to or delimiting the significant QTL have been converted to user-friendly markers. Loci and associated molecular markers identified in this study will be useful in genetic mapping and deployment of the genetic resistance to SFNB in barley.

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