News

Figure 1: Heavily infected fields of commercial durum wheat, Sicily May 2016 (Photo credit: Dr Biagio Randazzo). Click on photo to enlarge.

02.02.2017 | Research news

CAUTION: Risk of wheat stem rust in Mediterranean Basin in the forthcoming 2017 crop season following outbreaks on Sicily in 2016

Results of extensive lab tests of samples of stem rust have shown that the 2016 stem rust epidemics in Sicily were caused by a new, highly virulent variant of race TTTTF. The samples were collected during serious and unusual outbreaks of wheat stem rust on both durum wheat and bread wheat in Sicily during April - June 2016.

07.10.2016 |

The Warrior(-) race variant prevails in Europe

After the establishment of the Warrior race across Europe in 2011, the Warrior(-) variant now prevail in most European countries.

Tine Thach in the green house

30.01.2016 |

The “Stubbs collection” has resolved worldwide diversity of the yellow rust fungus in the past

Two new articles from GRRC -The first is a recovery and a virulence phenotyping study of old isolates from the collection. The second is a SSR marker based study of the worldwide population structure of P. striiformis in the past

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ARD TV: Pilzbefall von Weizen. Dem gefährlichen Schwarzrost auf der Spur. BR Fernsehen, 12 Min

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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GRRC annual reports on race phenotyping and genotyping

Please find reports of the Puccinia striiformis genotyping and race analyses activities at GRRC 2010 - 2019:

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.

MULTIRES: Multiple disease resistance in wheat

The overall goal of this public-private partnership is to improve wheat productivity by reducing losses due to plant disease in conventional and organic farming systems and the dependence of fungicide sprays in general. Part of the solution is the implementation of EU Directive 2009/128/EC (“IPM directive”), which may be a major challenge at the private farm level unless high-yielding, resistant crop varieties are available. This project will utilize two different strategies for developing disease resistant wheat:

  • Multi-parent advanced generation inter-cross (MAGIC) and

  • Nested association mapping (NAM).

New phenotyping methods using microscopy will be applied on new multi-resistant wheat lines emerging from the project in order to assess and evaluate resistance mechanisms and expected ‘durability’ of identified resistance.

Read more about this project

Funding

The project is funded by Innovation Fund Denmark

Duration: 2015-2020. Research Education: 2 ph.d. and 2 postdocs