New exotic races detected in Europe
News
2014.08.20 | Research news
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.
2014.08.20 | Research news
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.
2014.08.20 | Research news
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.
2013.06.06 | Agriculture and food
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.
2013.05.22 | Agriculture and food
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.
2013.02.27 | Agriculture and food
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.
Submission of wheat rust samples for diagnosis
Please find the guideline: "Sample collection procedure for GRRC race analyses of wheat rusts 2016" here
Race analysis of Stem rust at GRRC
Please find GRRC reports:
Samples of stem rust infected wheat from Italy. November 2016
CAUTION: Risk of wheat stem rust in Mediterranean Basin in the forthcoming 2017 crop season following outbreaks on Sicily in 2016
Disease notes:
Emergence of Virulence to SrTmp in the Ug99 Race Group of Wheat Stem Rust, Puccinia graminis f. sp. tritici, in Africa / Plant Disease February 2016, Volume 100, Number 2, Page 522
First Report of the Ug99 Race Group of Wheat Stem Rust, Puccinia graminis f. sp. tritici, in Egypt in 2014 / Plant Disease April 2016, Volume 100, Number 4, Page 863
Race analysis of Yellow rust at GRRC
Please find reports of the non-European Puccinia striiformis race analyses activities at GRRC 2010 - 2015:
- Summary of Puccinia striiformis race analysis 2016 Released February 2017
- Summary of Puccinia Striiformis race analysis 2015
- Summary of Puccinia Striiformis race analysis 2014
- Summary of Puccinia Striiformis race analysis 2013
- Summary of Puccinia striiformis isolate pathotyping 2012
- Summary of Puccinia striiformis isolate pathotyping 2011
- Summary of Puccinia striiformis isolate pathotyping 2010
Sampling site focus in 2017 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.
