Evidence map›Paper›PMID 42801349›Full record

ArticleTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik2026

Discovery of a novel non-race-specific adult-plant resistance (APR) locus conferring stripe rust immunity in spelt wheat and its suppression in bread wheat.

Vincent Fetterley, Jasneet Singh, Jujhar S Gill, Samuel Holden, Meng Li, Jennifer Enns, Pierre J Hucl, Curtis J Pozniak, Gurcharn S Brar

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Article in TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

9 authors.

Vincent FetterleyDepartment of Botany, Faculty of Science, The University of British Columbia, Vancouver, BC, Canada.
Jasneet SinghDepartment of Agricultural, Food, and Nutritional Sciences, Faculty of Agricultural, Life & Environmental Sciences, University of Alberta, Edmonton, AB, Canada.
Jujhar S GillPlant Science Program, Faculty of Land and Food Systems, The University of British Columbia, Vancouver, BC, Canada.
Samuel HoldenDepartment of Agricultural, Food, and Nutritional Sciences, Faculty of Agricultural, Life & Environmental Sciences, University of Alberta, Edmonton, AB, Canada.
Meng LiDepartment of Agricultural, Food, and Nutritional Sciences, Faculty of Agricultural, Life & Environmental Sciences, University of Alberta, Edmonton, AB, Canada.
Jennifer EnnsCrop Development Centre, Department of Plant Science, College of Agriculture and Bioresources, University of Saskatchewan, Saskatoon, SK, Canada.
Pierre J HuclCrop Development Centre, Department of Plant Science, College of Agriculture and Bioresources, University of Saskatchewan, Saskatoon, SK, Canada.
Curtis J PozniakCrop Development Centre, Department of Plant Science, College of Agriculture and Bioresources, University of Saskatchewan, Saskatoon, SK, Canada.
Gurcharn S BrarDepartment of Agricultural, Food, and Nutritional Sciences, Faculty of Agricultural, Life & Environmental Sciences, University of Alberta, Edmonton, AB, Canada. gurcharn.brar@ualberta.ca.

Funding

Alberta Grains 2021AWC100BManitoba Crop Alliance MCA2184Ministry of Agriculture - Saskatchewan ADF 20200205Saskatchewan Wheat Development Commission 173-201127
6 · The paper itself

Abstract

key messageA novel non-race-specific adult-plant resistance locus, QYr.cbl-5D, from spelt wheat confers near-immune resistance to stripe rust. The resistance conferred by QYr.cbl-5D is suppressed in bread wheat from an unknown suppressor. Adult-plant resistance (APR) genes provide durable, non-race-specific resistance against wheat rust diseases. We identified a novel APR locus in the spelt wheat cultivar CDC Silex that confers non-race-specific near-immune resistance to stripe rust. The trait segregates as a single dominant gene in the CDC Origin/CDC Silex spelt populations, and bulked segregant analysis sequencing (BSA-seq) mapped the locus, QYr.cbl-5D, to a 0.31 Mb interval on chromosome 5D, confirming monogenic inheritance. Interestingly, introgression into bread wheat suppresses this resistance, a pattern consistent with a dominant suppressor or another background-dependent modifier. We generated a scaffold-scale assembly of CDC Silex to annotate the locus and its flanking region on 5D. Within a ± 1 Mb interval flanking the QYr.cbl-5D peak, six genes were identified, of which five had no predicted function and one encodes a DnaJ/HSP-C2H2 zinc-finger fusion protein. Future work will aim to clone this APR and identify the molecular basis of its suppression in bread wheat. Linked SNPs from this region will enable marker-assisted selection to deploy this APR locus, providing a durable resistance resource to support sustainable wheat breeding and reduce reliance on fungicides.

Indexed as

Disease ResistancePlant DiseasesTriticumBasidiomycotaChromosome MappingGenes, PlantGenetic LinkageGenetic MarkersPhenotypePucciniaQuantitative Trait LociGenetic Markers

Identifiers

PMID42801349

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