Molecular mapping of a recessive gene for stripe rust resistance at the YrCf75 locus using bulked segregant analysis combined with single nucleotide polymorphism genotyping arrays and bulked segregant RNA-sequencing

論文信息：Molecular mapping of a recessive gene for stripe rust resistance at the  YrCf75 locus using bulked segregant analysis combined with single nucleotide polymorphism genotyping arrays and bulked segregant RNA-sequencing. Minghui Zhao, Bei Su, Xiaoxu Zhang, Xiaomei Zhang, Ruobing Li, Peng Cheng, Baotong Wang*, Qiang Li*. Plant Disease, 2022,106: 2020-2096.

JCR分區(qū)Q1，中科院大類二區(qū)，TOP期刊，IF：4.614

論文摘要：Wheat stripe rust, caused by  Puccinia striiformis f. sp.  tritici ( Pst ), is one of the most important diseases in wheat worldwide. Planting resistant varieties is the most economical, effective, and environment-friendly measure to control wheat stripe rust. Changfeng 75, a Chinese winter wheat variety, shows high stripe rust resistance in both seedling and adult-plant stages. The seedling tests of F₁, F₂, and F_2:3 populations derived from Mingxian 169/Changfeng 75 inoculated with Chinese predominant  Pst race CYR34 showed that the stripe rust resistance of Changfeng 75 was controlled by a single recessive gene. The locus was temporarily designated as  YrCf75 . Bulked segregant analysis (BSA) combined with the wheat 660K single-nucleotide polymorphism (SNP) array and bulked segregant RNA-sequencing indicated that the proportion of polymorphic SNPs on wheat chromosome 2A was the highest, which suggested that  YrCf75 was likely located on chromosome 2A. Two hundred and twenty-five Kompetitive allele-specific PCR (KASP) and 75 simple sequence repeat (SSR) markers on chromosome 2A were used to map  YrCf75 using the BSA approach. Linkage analysis indicated that 31 KASP markers and one SSR marker were linked to  YrCf75 , and the genetic distances of the two closest flanking KASP markers, AX-1110060462 and AX-111004763, were 1.2 and 2.7 cM, respectively.  YrCf75 was located on wheat chromosome 2AL. The molecular detection, resistance specificity, and chromosome location showed that  YrCf75 is likely a new gene that is different from the known stripe rust resistance genes ( Yr1 and  Yr32 ) on wheat chromosome 2AL.

原文鏈接：https://apsjournals.apsnet.org/doi/10.1094/PDIS-11-21-2564-RE