News

20.08.2014 |

New article: Sexual structures and recombination of the wheat rust fungus Puccinia striiformis on Berberis vulgaris

An isolate of the basidiomycete Puccinia striiformis, which causes yellow (stripe) rust on wheat, was selfed on the newly discovered alternate host, Berberis vulgaris. This allowed a study of the segregation of molecular markers and virulence in the progeny isolates, and of the development of fungal sexual structures and spore forms.

20.08.2014 |

New article: Origin, Migration Routes and Worldwide Population Genetic Structure of the Wheat Yellow Rust Pathogen Puccinia striiformis f.sp. tritici

This collaborative work between Denmark, France and Pakistan describe the worldwide population structure of wheat yellow rust and identifies the centre of diversity of the pathogen in Himalayan and near Himalayan regions.

20.08.2014 |

New article: New races of Puccinia striiformis found in Europe reveal race-specificity of long-term effective adult plant resistance in wheat

These results stress the need of maintaining high genetic diversity for disease resistance in wheat and of using pathogen isolates of diverse origin in studies of host resistance genetics.

06.06.2013 |

Organic farmers get a helping hand

There is an urgent need for devising new methods of preventing attacks of yellow rust fungus in cereals. A new project tackles the problem from several angles in close cooperation with the agricultural industry.

22.05.2013 |

Emerging yellow rust epidemics in Central and West Asia and Northern Africa (CWANA)

The Global Wheat Rust Monitoring System (RustTracker) reports about a potential outbreak of yellow rust epidemics in CWANA.

27.02.2013 |

Additional support in the fight against yellow rust in organic farming

Organic farmers do not have many tools at their disposal against yellow rust in wheat and triticale apart from resistant varieties and good advice. Scientists from Aarhus University are now developing a better toolbox.

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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.

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