Abstract
Puccinia striiformis Westend. f. sp. tritici (Pst) pathotype CYR34 is widely virulent and prevalent in China. Here, we report identification of a strpie rust resistance (Yr) gene, designated Yr041133, in winter wheat line 041133. This line produced a hypersensitive reaction to CYR34 and conferred resistance to 13 other pathotypes. Resistance to CYR34 in line 041133 was controlled by a single dominant gene. Bulked segregant RNA sequencing (BSR-Seq) was performed on a pair of RNA bulks generated by pooling resistant and susceptible recombinant inbred lines. Yr041133 was mapped to a 1.7 cM genetic interval on the chromosome arm 7BL that corresponded to a 0.8 Mb physical interval (608.9–609.7 Mb) in the Chinese Spring reference genome. Based on its unique physical location Yr041133 differred from the other Yr genes on this chromosome arm.
