title: Identification of the gene Pm47 on chromosome 7BS conferring resistance to powdery mildew in the Chinese wheat landrace Hongyanglazi.
abstract: Powdery mildew, caused by Blumeria graminis f. sp. tritici (Bgt), is an important disease that causes substantial yield losses in wheat (Triticum aestivum) in China and other parts of the world. This foliar disease can be effectively managed by host resistance. The Chinese landrace Hongyanglazi from Shaanxi province is highly resistant to many Bgt isolates at the seedling stage. Genetic analysis using an F2:3 population derived from a cross between Hongyanglazi and susceptible cultivar Zhongzuo 9504 indicated that Hongyanglazi carried a single recessive gene (tentatively designated PmHYLZ) conferring its resistance to Bgt isolate E09. PmHYLZ was flanked by EST marker BE606897 and microsatellite marker Xgwm46 on chromosome 7BS at genetic distances of 1.7 and 3.6 cM, respectively. This gene differed from Pm40, also located on 7BS, by origin, linked markers, and reactions to 13 Bgt isolates. Based on these findings, PmHYLZ was permanently designated as Pm47.
authors: The National Key Facility for Crop Gene Resources and Genetic Improvement (NFCRI), Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
authors: Minggang
authors: M
authors: Xiao
authors: Fengjing
authors: F
authors: Song
authors: Jianfeng
authors: J
authors: Jiao
authors: Xiaoming
authors: X
authors: Wang
authors: Hongxing
authors: H
authors: Xu
authors: Hongjie
authors: H
authors: Li
mesh_terms: D001203:Ascomycota / Q000235:genetics / Q000276:immunology / Q000472:pathogenicity*; D002874:Chromosome Mapping; D032461:Chromosomes, Plant / Q000235:genetics*; D018744:DNA, Plant / Q000235:genetics; D060467:Disease Resistance / Q000235:genetics*; D017343:Genes, Plant / Q000235:genetics*; D008040:Genetic Linkage; D005819:Genetic Markers; D007113:Immunity, Innate / Q000235:genetics; D010641:Phenotype; D010935:Plant Diseases / Q000235:genetics* / Q000276:immunology / Q000382:microbiology; D014908:Triticum / Q000235:genetics* / Q000276:immunology / Q000382:microbiology
chemical_list: D018744:DNA, Plant; D005819:Genetic Markers