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GrainGenes Reference Report: PHY-2024-Xu

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Reference
PHY-2024-Xu
Title
Characterization of quantitative trait loci for leaf rust resistance in the Uzbekistani wheat landrace Teremai Bugdai
Journal
Phytopathology
Year
2024
Remark
(Curator Note, VCB 2024/2/5) These data were curated from the 'First Look' version of the paper. The volume and pages will be updated when in print.
Author
Xu X
[ Show all 9 ]
Abstract
Leaf rust, caused by Puccinia triticina Eriks. (Pt), is a major cause of wheat yield losses globally, and novel leaf rust resistance genes are needed to enhance wheat leaf rust resistance. Teremai Bugdai is a landrace from Uzebekistan that is highly resistant to many current races of Pt in the U.S.A. To unravel leaf rust resistance loci in Teremai Bugdai, a recombinant inbred line (RIL) population of Teremai Bugdai x TAM 110 was evaluated for response to Pt race Pt54-1 (TNBGJ) and genotyped using single nucleotide polymorphism (SNP) markers generated by genotyping-by-sequencing (GBS). Quantitative trait loci (QTL) analysis using 5,130 high quality GBS-SNPs revealed three QTLs, QLr-Stars-2DS, QLr-Stars-6BL, and QLr.stars-7BL, for leaf rust resistance in two experiments. QLr-Stars-2DS, which is either a new Lr2 allele or a new resistance locus, was delimited to a ~ 19.47 Mb interval between 46.4 Mb and 65.9 Mb on 2DS and explained 31.3% and 33.2% of the phenotypic variance in the two experiments. QLr-Stars-6BL was mapped in a ~84.0 Kb interval between 719.48 Mb and 719.56 Mb on 6BL, accounting for 33% to 36.8% of the phenotypic variance in two experiments. QLr.stars-7BL was placed in a 350 Kb interval between 762.41 Mb and 762.76 Mb on 7BL and explained 4.4% to 5.3% of the phenotypic variance. Nine GBS-SNPs flanking these QTLs were converted to kompetitive allele specific PCR (KASP) markers and these markers can be used to facilitate their introgression into locally adapted wheat lines.
External Databases
https://doi.org/10.1094/PHYTO-09-23-0320-R
Germplasm
Teremai Bugdai
Locus
Stars-KASP797
[ Show all 9 ]
Probe
Stars-KASP797
[ Show all 9 ]
QTL
QLr-Stars-2DS
QLr-Stars-6BL
QLr.stars-7BL

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