Rust alerts

This is the latest Cereal Rust Report for 2013:


Issue 6: First detection of wheat leaf rust pathotype 76-1,3,5,7,9,10,12 +Lr37 in Western Australia

First detection of wheat leaf rust pathotype 76-1,3,5,7,9,10,12 +Lr37 in Western Australia

A pathotype of the wheat leaf rust pathogen, Puccinia triticina, first detected in eastern Australia in 2011, has been detected in samples of leaf rust infected wheat collected in late Sept/ Oct 2013 from 4 widely separated locations in Western Australia (Borden, Esperance, Gibson, Northampton). While not new to Australia, this is the first detection of this pathotype in WA and it represents the first occurrence of virulence for the resistance genes Lr13, Lr17a, Lr17b, and Lr26 in WA. The movement of cereal rust inoculum from WA to eastern Australia has been documented many times over the past 90+ years, and is presumed to occur on prevailing winds. Movement from east to west is much less frequent. While 6 such examples of west-to-east movement of cereal rusts have been documented since 1990, the current detection is only the second example of east to west movement during that time.


Previous Cereal Rust Reports can be accessed at http://sydney.edu.au/agriculture/plant_breeding_institute/cereal_rust/reports_forms.shtml