A Quantitative Trait Locus with a Major Effect on Root-Lesion Nematode Resistance in Barley

Although the root-lesion nematode is known to affect barley ( L.), there have been no reports on the genetic control of resistance in barley. In this research, resistance was assessed for a panel of 46 barley mapping parents and for two mapping populations (Arapiles/Franklin and Denar/Baudin). With...

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Bibliographic Details
Published in:Plants (Basel) 2024-06, Vol.13 (12), p.1663
Main Authors: Mather, Diane, Vassos, Elysia, Sheedy, Jason, Guo, Wenbin, McKay, Alan
Format: Article
Language:English
Subjects:
Barley
Chromosome 7
chromosome 7H
Chromosomes
Experiments
Frequency distribution
Gene expression
gene expression regulation
Gene mapping
Genes
Genetic control
Genomes
Genomic analysis
Hordeum vulgare
Lesions
Mapping
Nematodes
Nucleotides
Pest resistance
Plant breeding
Populations
Pratylenchus thornei
Quantitative trait loci
quantitative trait locus
R&D
Research & development
resistance
resistance genes
root lesion nematodes
root-lesion nematode
Single-nucleotide polymorphism
Transcriptomics
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Summary:Although the root-lesion nematode is known to affect barley ( L.), there have been no reports on the genetic control of resistance in barley. In this research, resistance was assessed for a panel of 46 barley mapping parents and for two mapping populations (Arapiles/Franklin and Denar/Baudin). With both populations, a highly significant quantitative trait locus (QTL) was mapped at the same position on the long arm of chromosome 7H. Single-nucleotide polymorphisms (SNPs) in this region were anchored to an RGT Planet pan-genome assembly and assayed on the mapping parents and other barley varieties. The results indicate that Arapiles, Denar, RGT Planet and several other varieties likely have the same resistance gene on chromosome 7H. Marker assays reported here could be used to select for resistance in barley breeding. Analysis of existing barley pan-genomic and pan-transcriptomic data provided a list of candidate genes along with information on the expression and differential expression of some of those genes in barley root tissue. Further research is required to identify a specific barley gene that affects root-lesion nematode resistance.
ISSN:2223-7747
2223-7747
DOI:10.3390/plants13121663