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GrainGenes Reference Report: PHY-114-752

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Reference	PHY-114-752
Title	Genome-Wide Association Study of Host Resistance to Hessian Fly in Barley
Journal	Phytopathology
Year	2024
Volume	114
Pages	752-759
Author	Karki M [ Show all 9 ]
Abstract	The Hessian fly (HF), Mayetiola destructor (Diptera: Cecidomyiidae), is one of the most devastating insect pests of cereals including wheat, barley, and rye. Although wheat is the preferred host for HF, this continuously evolving pest has been emerging as a threat to barley production. However, characterization and identification of genetic resistance to HF has not been conducted in barley. In the present study, we used a genome-wide association study (GWAS) to identify barley resistance loci to HF using a geographically diverse set of 234 barley accessions. The results showed that around 90% of barley lines were highly susceptible, indicating a significant vulnerability to HF in barley, and a total of 29 accessions were resistant, serving as potential resistance resources. GWAS with a mixed linear model revealed two marker-trait associations, both on chromosome 4H. The resistance loci and associated markers will facilitate barley improvement and development for breeders. In addition, our results are fundamental for genetic studies to understand the HF resistance mechanism in barley.
External Databases	https://doi-org/10.1094/PHYTO-06-23-0192-R
Gene	HvRHF1 (Hordeum) HvRHF2 (Hordeum)
Locus	HORVU.MOREX.r3.4HG0331630.1 [ Show all 47 ]
QTL	HvRHF1 HvRHF2

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