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GrainGenes Reference Report: PDS-103-880

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Reference	PDS-103-880
Title	Genome-wide association studies and candidate gene identification for leaf scald and net blotch in barley (Hordeum vulgare L.)
Journal	Plant Disease
Year	2019
Volume	103
Pages	880-889
Author	Daba SD Horsley R Brueggeman R Chao S Mohammadi M
Abstract	We report genomic regions that significantly control resistance to scald, net form (NFNB) and spot form net blotch (SFNB) in barley. Barley genotypes from Ethiopia, ICARDA, and the United States were evaluated in Ethiopia and North Dakota State University (NDSU). Genome-wide association studies (GWAS) were conducted using 23,549 single nucleotide polymorphism (SNP) markers for disease resistance in five environments in Ethiopia. For NFNB and SFNB, we assessed seedling resistance in a glasshouse at NDSU. A large proportion of the Ethiopian landraces and breeding genotypes were resistant to scald and NFNB. Most of genotypes resistant to SFNB were from NDSU. We identified 17, 26, 7, and 1 marker-trait associations (MTAs) for field-scored scald, field-scored net blotch, greenhouse-scored NFNB, and greenhouse-scored SFNB diseases, respectively. Using the genome sequence and the existing literature, we compared the MTAs with previously reported loci and genes for these diseases. For leaf scald, only a few of our MTAs overlap with previous reports. However, the MTAs found for field-scored net blotch as well as NFNB and SFNB mostly overlap with previous reports. We scanned the barley genome for identification of candidate genes within 250 kb of the MTAs, resulting in the identification of 307 barley genes for the 51 MTAs. Some of these genes are related to plant defense responses such as subtilisin-like protease, chalcone synthase, lipoxygenase, and defensin-like proteins.
External Databases	https://doi.org/10.1094/PDIS-07-18-1190-RE
QTL	[ Hide all but 1 of 45 ] Qnfnb-2H.1_Eth_ICARDA_NDSU Qnfnb-4H.1_Eth_ICARDA_NDSU Qnfnb-4H.2_Eth_ICARDA_NDSU Qnfnb-6H.1_Eth_ICARDA_NDSU Qnfnb-6H.2_Eth_ICARDA_NDSU Qnfnb-6H.4_Eth_ICARDA_NDSU Qns-2H.1_Eth_ICARDA_NDSU Qns-2H.2_Eth_ICARDA_NDSU Qns-2H.3_Eth_ICARDA_NDSU Qns-3H.1_Eth_ICARDA_NDSU Qns-3H.3_Eth_ICARDA_NDSU Qns-3H.4_Eth_ICARDA_NDSU Qns-3H.5_Eth_ICARDA_NDSU Qns-4H.1_Eth_ICARDA_NDSU Qns-4H.2_Eth_ICARDA_NDSU Qns-4H.3_Eth_ICARDA_NDSU Qns-5H.1_Eth_ICARDA_NDSU Qns-5H.2_Eth_ICARDA_NDSU Qns-5H.3_Eth_ICARDA_NDSU Qns-5H.4_Eth_ICARDA_NDSU Qns-5H.5_Eth_ICARDA_NDSU Qns-5H.6_Eth_ICARDA_NDSU Qns-5H.7_Eth_ICARDA_NDSU Qns-6H.1_Eth_ICARDA_NDSU Qns-6H.2_Eth_ICARDA_NDSU Qns-6H.3_Eth_ICARDA_NDSU Qns-6H.4_Eth_ICARDA_NDSU Qns-6H.5_Eth_ICARDA_NDSU Qns-7H.1_Eth_ICARDA_NDSU Qns-7H.2_Eth_ICARDA_NDSU Qsfnb-6H_Eth_ICARDA_NDSU Qsc-1H_Eth_ICARDA_NDSU Qsc-2H.1_Eth_ICARDA_NDSU Qsc-2H.2_Eth_ICARDA_NDSU Qsc-2H.3_Eth_ICARDA_NDSU Qsc-2H.4_Eth_ICARDA_NDSU Qsc-2H.5_Eth_ICARDA_NDSU Qsc-3H_Eth_ICARDA_NDSU Qsc-5H.1_Eth_ICARDA_NDSU Qsc-5H.3_Eth_ICARDA_NDSU Qsc-6H_Eth_ICARDA_NDSU Qsc-7H.1_Eth_ICARDA_NDSU Qsc-7H.2_Eth_ICARDA_NDSU Qsc-7H.3_Eth_ICARDA_NDSU Qsc-7H.4_Eth_ICARDA_NDSU

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