DRRW-ICAR SAARC Training Program - Part 2 - Wellington
The SAARC Training Program officially began on 25 February 2012, when participants visited the Indian Agricultural Research Institute (IARI) Research Station at Wellington, in Tamil Nadu. Dr. Jagdish Kumar, principal scientist and head of the station, began the day's proceedings with a welcome address and orientation lecture on rust surveillance. Dr. M.Sivasamy, senior scientist (wheat breeding) delivered a presentation on the role and influence of rust surveys and wheat improvement strategies. Dr. Robert Park provided an outline of surveillance activities while Dr. Dave Hodson demonstrated the wheat rust surveillance "Global Tool Box," and Mr.Ananth Murthy, of Sathguru, demonstrated the online SAARC Tool Box specifically designed for use by the scientists from the South Asian nations involved in the project.
Linda McCandless · 6 Jun 2012
DRRW-ICAR SAARC Training Program - Part 1 - Intro
Over the next two weeks, the BGRI will post a series of blogs related to the DRRW-ICAR Wheat Rust Surveillance and Monitoring training program that took place in India from 25 Feb -10 March 2012.
Linda McCandless · 5 Jun 2012
Guest Author: Eduard Akhunov, investigating genomics of stem rust wheat interaction
USDA AFRI (USA), in close collaboration with the international BGRI team, funded a project on functional genomics of stem rust wheat interaction. In this project lead by Kansas State University (E.Akhunov) in collaboration with UC Davis (J. Dubcovsky) researchers are investigating molecular interactions among the cloned Ug99 resistance gene (Sr35), pathogen effectors, and their wheat targets.
John Bakum · 8 May 2012
Bill Gates: My 2012 Annual Letter
Bill Gates - "In this year’s letter, I focus on food and agriculture (though I also provide updates about all the global health and U.S. education work we do). When I was in high school, a popular book called The Population Bomb painted a nightmarish vision of mass starvation on a planet that has outgrown its carrying capacity. That prediction was wrong, in large part because researchers developed much more productive seeds and other tools that helped poor farmers in many parts of the world multiply their yields. As a result, the percentage of people in extreme poverty has been cut in half in my lifetime. That’s the amazing progress part of the story, and not enough people know it."
Linda McCandless · 24 Jan 2012
Guest author: Colin Wellings, the international Stripe Rust Race
Stripe rust epidemics are a recurring threat to wheat yield in the majority of wheat growing regions of the world, with potential to inflict regular regional crop losses ranging from 0.1 to 5%, with rare events giving losses of 5 to 25%. Regions with current vulnerability include North America (particularly Pacific North West USA, Mexico), East Asia (China, north‐west and south‐west), South Asia (India, Pakistan, Nepal), Oceania (Australia, New Zealand), East Africa (Ethiopia, Kenya), the Arabian Peninsula (Yemen), Middle East (Syria, Turkey), Central Asia (Uzbekistan) and Western Europe. A basis for these epidemics has been the progressive emergence of pathogen races in similar patterns to that experienced in Australia. Collaborative work funded by ACIAR in association with international agencies CIMMYT and ICARDA allowed the development and deployment of genetic stocks to monitor race changes in the field across wheat regions in the developing world.
John Bakum · 11 Jan 2012
Sustainable solutions to global problems, Q&A with Dr. Lesley Boyd
Stripe and stem rust are significant and destructive diseases in wheat, and currently pose the threat of a global epidemic. Dr. Lesley Boyd of the John Innes Centre is leading a vital project to identify and develop new molecular markers for resistance to both diseases.
John Bakum · 6 Dec 2011
Communication between barley-plant and stem rust spore
In a paper published in the Proceedings of the National Academy of Sciences, USA (PNAS), Nirmala et al. 108:14676-14681, (2011) describe the isolation and preliminary characterization of two effector proteins that coordinately induce stem rust resistance gene protein product RPG1 to become phosphorylated and initiate disease resistance signaling. The quest for these proteins started with an earlier discovery that Puccinia graminis f. sp. tritici spores initiate RPG1 phosphorylation within 5 minutes of landing on the leaf surface (Nirmala et al., Mol. Plant-Microbe Interact. 23:1635-1642, 2010). This discovery was astounding and indicated that the effectors are already present on the spore surface and that the plant has an early warning system to indicate that the enemy has landed.
John Bakum · 21 Oct 2011
Sequencing of Puccina striiformis f. sp. tritici genome
Scientists at the University of California Davis have sequenced and assembled part of the Puccinia striiformis f. sp. tritici genome, a milestone that promises to be a valuable resource for wheat rust research.
John Bakum · 14 Sep 2011
Guest Author: Robert Park at Borlaug Archives, University of Minnesota
While attending the 2011 Borlaug Global Rust Initiative Technical Workshop in St. Paul Minnesota in June, I had a rare opportunity to visit the University of Minnesota Archives with several colleagues, including Ms Jeanie Borlaug Laube, daughter of 1970 Nobel Laureate Dr. Norman Borlaug. The Archives hold many of Dr. Borlaug's papers, including the first hand written draft of his Nobel Prize acceptance speech.
John Bakum · 29 Jul 2011
Guest Entry: Les J. Szabo on the sequencing of the wheat stem rust fungal genome
In a paper titled, "Obligate biotrophy features unraveled by the genomic analysis of rust fungi", published in the May 31, 2011 issue of Proceedings of the National Academy of Sciences, USA(PNAS), Duplessis et al. describe the characterization of the genome and transcriptome of two rust fungi, Puccinia graminis f. sp. tritici (Pgt, wheat stem rust pathogen) and Melampsora larici-populina (Mlp, leaf rust of poplar). This represents the first genomes of any rust fungi to be sequenced, and provides the first detail insight into the how these obligate biotrophic plant pathogens are able to cause disease and rapidly evolve to overcome host resistance.
John Bakum · 19 Jul 2011