News

21.02.2019 | Research news

GRRC annual report on wheat yellow rust 2018 released

This report presents results on Simple Sequence Repeat (SSR) genotyping of samples of Puccinia striiformis from wheat and triticale collected across four continents in 2018, with reference to 2017 results.

Figure 1. Recovery and diagnosis of samples of wheat stem rust in GRRC quarantine facilities. Photo by Mehran Patpour

07.02.2019 | Research news

Re-emergence of stem rust on wheat in Western Europe

In a commentary in Communication Biology, published 4th February 2019, scientists evaluate the risks of re-emergence of wheat stem rust in Europe. In general, the wheat rust “problems” in Europe have been addressed via multiple national initiatives, but in 2018, a new EU H2020 research and innovation program was launched, dealing with all three…

Figure 1. Rust contaminated machinery early in the growing season, September 2017, Los Cisnes, La Carlota, Cordoba province, Argentina. Photo: Ing. Agr. Juan Pablo Ioele. Click on the photo to enlarge.

09.02.2018 |

Severe epidemics of wheat yellow rust in Argentina

In 2017, Argentina faced the worst epidemics of yellow rust since the 1930s. Based on samples collected at 22 epidemic sites in September, the Global Rust Reference Center (GRRC) has identified at least three distinct yellow rust genotypes. Two of these were identical to genotypes first detected in Europe and North Africa in 2015-16.

Photo: Cecilia Lerenius, Jordbruksverket, Sweden. Race Triticale2015 (PstS13) epidemic on triticale in Sweden 2015, variety ‘Remiko’ grown under organic conditions. PstS13 was prevalent in the 2017-epidemics in Argentina. Click on photo to enlarge.

09.02.2018 |

GRRC annual report on wheat yellow rust 2017 released

Unusual and severe epidemics of yellow rust were observed on several continents in 2017. In a number of cases, epidemic sites at different continents were inter-related by prevalence of genetically identical yellow rust genotypes and races.

07.12.2017 |

New Ph.D dissertation about sexual reproduction of P. striiformis on Berberis vulgaris

Julian Rodriguez-Algaba, AU, GRRC defended his Ph.D in October, 2017. Read about the key findings of his research

Photo2. Prof . Vladimir Shaminin (Omsk Agrarian State University) inspecting wheat plots at Omsk Agrarian State University with Dr Alexey Morgunov (CIMMYT) and Prof. Mogens Hovmøller (GRRC, Aarhus University)

04.09.2017 |

Assessing the Stem Rust Situation in Western Siberia

Up to 2014 wheat stem rust was not considered of major importance in Western Siberia, but severe epidemics in 2015 and 2016 has changed the situation. New research to resolve stem rust epidemiology in the region and additional efforts in breeding for rust resistance is urgently needed.

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Race analyses

Submission of wheat rust samples for diagnosis

Please find the guideline: "Sample collection procedure for GRRC race analyses of wheat rusts 2016" here

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Race analysis of Yellow rust at GRRC

Please find reports of the Puccinia striiformis genotyping and race analyses activities at GRRC 2010 - 2018:

Definitions of genetic groups and races

Sampling site focus in 2019 will be selected by staff at ICARDA, CIMMYT and NARCs in Africa and Asia, with a focus on high risk epidemic areas. Since 2011, GRRC also accepted samples of stem rust (Puccinia graminis tritici) as agreed upon with the Borlaug Global Rust Initiative and the phase II of the Durable Rust Resistance in Wheat Project (DRRW) and now continued in the Delivering Genetic Gain in Wheat project (DGGW), 2016-2020. GRRC can only process samples according to available space and resources at any time, and we cannot guarantee to process all samples received.

RUSTFIGHT - Meeting the new challenges from infectious rust fungi on crop plants

The Danish Research Council for Strategic Research is contributing 19.8m DKK to a new research project to be led by Aarhus University. The results from the project will bring more knowledge to the prevention and control of wheat rust.

The research will be a collaboration between The Global Rust Reference Centre at Aarhus University, University of Copenhagen, Technical University of Denmark, Sejet Planteforædling and leading international institutions.

In the project the scientists will try to decode how and why the fungus starts to develop so aggressively. They will also prepare a list of the genetic codes of the fungus – the so-called effectors – that are responsible for the ability of the fungus to adapt to new wheat varieties. These effectors will be screened and used to develop wheat cultivars with durable rust resistance.

Another ambition is to track down rust resistance in resistant wheat varieties and strains made available from international institutions to Danish plant breeders.

read more..    Information in Danish