期刊
G3-GENES GENOMES GENETICS
卷 7, 期 8, 页码 2615-2626出版社
OXFORD UNIV PRESS INC
DOI: 10.1534/g3.117.043265
关键词
Pyrenophora teres; barley; fungal pathogen; spot form net blotch; virulence
资金
- United States Department of Agriculture (USDA), National Institute of Food and Agriculture, Agriculture and Food Research Initiative [2011-68002-30029]
Pyrenophora teres f. maculata is the cause of the foliar disease spot form net blotch (SFNB) on barley. To evaluate pathogen genetics underlying the P. teres f. maculata-barley interaction, we developed a 105-progeny population by crossing two globally diverse isolates, one from North Dakota and the other from Western Australia. Progeny were phenotyped on a set of four barley genotypes showing a differential reaction to the parental isolates, then genotyped using a restriction site-associated-genotype-by-sequencing (RAD-GBS) approach. Genetic maps were developed for use in quantitative trait locus (QTL) analysis to identify virulence-associated QTL. Six QTL were identified on five different linkage groups and individually accounted for 20-37% of the disease variation, with the number of significant QTL ranging from two to four for the barley genotypes evaluated. The data presented demonstrate the complexity of virulence involved in the P. teres f. maculata-barley pathosystem and begins to lay the foundation for understanding this important interaction.
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