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Early warning for virulent and aggressive strains of yellow rust

One objective for RUSTFIGHT is to provide early warning of new virulent and aggressive strains of yellow rust that compromise R-genes of commercial interest via a web-based ICT platform maintained by the Global Rust Reference Center (GRRC).

Yellow rust Surveillance - attacks in Asia, 2012

In 2012 widespread attacks of yellow rust were found in Central and West Asia - especially in the mountain areas of the Himalayan region. See more on the interactive Survey Mapper

YR10 broken in some regions in Africa and Europe

See more on the interactive Virulence Mapper

Warrior and Kranich are the most widespread Pathotypes (races) in Europe

See more on the interactive Pathotype Mapper

Puccinia striiformis race analyses 2012

Like previous years we did not detect virulence to Yr5 and Yr15 in 2012, whereas virulence for Yr10 was observed in East Africa. Despite that some pathotypes may remain undetected in some areas due to relative low sample sizes, the results were quite consistent across the different sampling areas. Virulence for Yr10 was common among European samples from Triticale and virulence for Yr17 was common for European wheat samples. These results are available on the Virulence Mapper

For European results, see the Pathotype Europe mapper tool. The detection of Yr17-virulence was restricted in some few isolates, where a potential, additional resistance gene in VPM1 may have been recognized. Inconsistent results were obtained for Avocet x Yr17 NIL due to lack of homogeneity of seeds, and in some cases inconsistent specificity compared to VPM1.

Revideret 27.09.2022
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Jens Grønbech Hansen