New Wheat Gene Yr88 Explains 86% of Resistance to Stripe Rust
28 September 2026, New South Wales, Australia: Researchers at the University of Sydney’s Plant Breeding Institute in Cobbitty, New South Wales,
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Yr88 Gene
Get the latest Yr88 Gene news, research and developments covering wheat genetics, stripe rust resistance, disease-resistant breeding and molecular mapping. Yr88 is a newly identified wheat resistance gene associated with adult-plant resistance to Puccinia striiformis f. sp. tritici, the pathogen that causes wheat stripe or yellow rust.
Researchers mapped the gene to the distal region of chromosome 2DS and found that it provides race-specific resistance against Pst pathotype 198 E16 A- J+ T+ 17+, belonging to the PstS13 multi-locus genotype. The study identified the gene in several Australian and international wheat cultivars, including LRPB Hellfire, Sherriff CL Plus, Vixen, Wyalkatchem, Lerma Rojo 64 and Moomal 2000.
Coverage includes research on Yr88 mapping, molecular markers, wheat germplasm, pathogen races, resistance breeding and gene deployment. As the researchers describe Yr88 as race-specific and potentially non-durable, its value is likely to be greatest when combined with other effective resistance genes through breeding and gene pyramiding rather than used as a standalone solution.