News

Relative distribution of recently emerged P. striiformis races from divergent lineages across eight worldwide geographical regions during the period 2009-2015. Click on the map to enlarge.

01.06.2017 |

Yellow rust epidemics worldwide were caused by pathogen races from divergent genetic lineages

New scientific article - Frontiers in Plant Science, June 2017

Haustoria formation and host cell response in wheat seedling leaves

21.05.2017 |

Temporal and Spatial Variability of Fungal Structures and Host Responses in an Incompatible Rust–Wheat Interaction

New scientific article - Frontiers in Plant Science, April 2017

Tine Thach

28.03.2017 |

International reward to promising wheat researcher from GRRC

Postdoc Tine Thach from GRRC, Aarhus University has been awarded the 2017 Jeanie Borlaug Laube Women in Triticum (WIT) Award.

Photo by Cecilia Lerenius, Jordbruksverket, Sweden. Triticale2015 race on variety ‘Remiko’ grown under organic conditions. Click on photo to enlarge.

02.02.2017 |

New races caused epidemics of yellow rust in Europe, East Africa and Central Asia in 2016

Two significant new races having unique yellow rust genotypes were detected across wide areas in Europe/North Africa and East Africa/Central Asia, respectively. One new race was detected in Morocco, Italy and countries in Northern Europe. Another new race of a unique genotype was prevalent in epidemics in Ethiopia, Uzbekistan and Afghanistan.

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 |

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.

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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