BGRI - Profile of Jenny Nelson (jnelson) > Dashboard http://www.globalrust.org/traction?type=userprofile&proj=*&rec=13&rs= Profile of Jenny Nelson (jnelson) > Dashboarden-usCopyright © 2012 Cornell University - Wheat Rust Research Project All rights reserved.Newshttp://backend.userland.com/rss20A1 BGRI - Profile of Jenny Nelson (jnelson) > Dashboard http://www.globalrust.org/traction?type=userprofile&proj=*&rec=13&rs= http://www.globalrust.org/share/tsi/logos/bgri_banner.jpg 770 98 Guest Blog: Update from ICARDA [blog, Guest: Mahmoud Sohl] http://www.globalrust.org/traction/permalink/blog256 Guest Blog: Update from ICARDA [blog, Guest: Mahmoud Sohl]blogGuest: Mahmoud Sohlhttp://www.globalrust.org/traction/permalink/blog256 Guest Blog: Update from ICARDA [:blog:blog, :blog:Guest: Mahmoud Sohl]
blog256 | Posted by Linda McCandless | May 14, 2012 | 3:33 PM

13 May 2012 - ICARDA has received many messages from partners and friends during recent months enquiring about ICARDA’s situation. Having just completed their Board of Trustees meeting in Amman, Jordan, Mahmoud Solh, Director General, and Henri Carsalade, Chair of the Board of Trustees, sent this update on their current situation.
The Board reviewed highlights of the Center’s research achievements in 2011, and the Center’s involvement in the CGIAR Research Programs (CRPs), and was pleased to see that ICARDA’s global research and capacity development programs are being implemented as planned. The Center continues to give priority to further developing the CGIAR Research Program (CRP1.1) on Dryland Systems. The Board discussed ICARDA’s situation in light of events in the West Asia and North Africa region, and particularly in Syria where the Center’s headquarters and principal research station are located.
The Center has gradually implemented contingency measures, including temporarily relocating its international staff to ICARDA Regional Offices and sister CGIAR Centers. These measures have been implemented with two major objectives: to ensure the safety of our staff and to ensure that our scientists are able to continue their global research and training programs in partnership with national programs and other partners, wherever they are located. In relocating staff, we took care to ensure that research teams were located together at places where they are best able to continue their collaborative research programs and projects.
There has been some disruption in our operations, particularly to training programs and international meetings, which we have resolved by shifting the venues to partner institutions and countries. Despite the difficulties, we have been able to maintain our research program. The infrastructure at our headquarters in Tel Hadya, Aleppo, Syria, has not been affected to date. The senior management team and a core group of scientists have remained at headquarters. The Center continues to operate its field and laboratory activities as planned, supported by our very dedicated national staff. We expect the breeding trials at Tel Hadya to be harvested as normal, and have also this season duplicated our plant breeding and multiplication trials in neighboring countries with similar agro-ecologies. We have ensured that all germplasm collections in our gene bank are duplicated in other gene banks, and have taken the precaution of sending seed to national partners for multiplication.
ICARDA has a global mandate for the non-tropical dry areas. While activities in a few countries in North Africa and West Asia have been disrupted, the rest of our global program is being implemented as planned. Our collaborative research activities and projects in Yemen and Libya have been stopped completely for the time being, but activities in Egypt and Tunisia continue normally. In our host country Syria, projects have been affected, but where possible are continuing with the support of our national Syrian partners.
This has been a period of uncertainty for the Center’s staff and we commend them for their dedication and commitment to ICARDA. We greatly appreciate the generous support we have received from our national partners and sister CGIAR Centers, and the Consortium Board and Fund Council, during this difficult time.
Thank you for your continuous support.
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Add a Comment on this Article]]>2012-05-14T15:33:40-04:00lmccandless Bumper wheat output creates new hope among farmers [May 2012, ug99, Bangladesh] http://www.globalrust.org/traction/permalink/newsroom651 Bumper wheat output creates new hope among farmers [May 2012, ug99, Bangladesh]May 2012ug99Bangladeshhttp://www.globalrust.org/traction/permalink/newsroom651 Bumper wheat output creates new hope among farmers [:newsroom:Bangladesh, :newsroom:May 2012, :newsroom:ug99]
newsroom651 | Posted by John Bakum | May 11, 2012 | 11:04 AM

Bumper wheat output creates new hope among farmers
11 May 2012 - Financial Express Bangladesh
Increased cultivation of high yielding Ug99 stem rust resistant BARI Gom 26, Pradip, Sotabdi and other varieties along with adoption of the latest conservation- based agriculture (CA) technologies largely contributed to higher wheat yield rate...
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Add a Comment on this Article]]>2012-05-11T11:04:33-04:00John Guest blog: Eduard Akhunov, investigating genomics of stem rust wheat interaction [blog, Guest: Eduard Akhunov, Other:Ug99, Other:genomics, Other:Resistant genes] http://www.globalrust.org/traction/permalink/blog251 Guest blog: Eduard Akhunov, investigating genomics of stem rust wheat interaction [blog, Guest: Eduard Akhunov, Other:Ug99, Other:genomics, Other:Resistant genes]blogGuest: Eduard AkhunovOther:Ug99Other:genomicsOther:Resistant geneshttp://www.globalrust.org/traction/permalink/blog251 Guest blog: Eduard Akhunov, investigating genomics of stem rust wheat interaction [:blog:blog, :blog:Guest: Eduard Akhunov, :blog:Other:genomics, :blog:Other:Resistant genes, :blog:Other:Ug99]
blog251 | Posted by John Bakum | May 8, 2012 | 11:56 AM

08 May 2012 - 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.
Next-generation sequencing technologies have been used for sequencing stem rust races virulent and avirulent to Sr35, and will be complemented with a detailed transcriptional profiling of stem rust-wheat pathosystem. This information is being used to identify stem rust effectors recognized by Sr35 resistance gene and to understand the transcriptional control of host-pathogen interaction at a system level. The cloned Sr35 gene is being used as an entry point to unravel molecular interactions between stem rust and wheat using in vitro and vivo assays and TILLING mutants. The long-term objectives of this project is to elucidate molecular processes defining the outcome of rust-wheat interaction and create genetic and genomic tools to develop better strategies to control this disease.
We combined genetic and genomic resources and expertise of both laboratories for detailed functional analysis of Sr35 gene and stem rust-wheat pathosystem. The project brings together a unique combination of expertise of both laboratories in the analysis of next-generation sequence data, functional analysis of genes using in vitro/in vivo assays and reverse genetics approaches. This collaborative approach allowed researchers to quickly clone and validate the first Ug99 resistance gene making now possible to investigate the molecular mechanisms of pathogen recognition.
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Add a Comment on this Article]]>2012-05-08T11:56:52-04:00John Image carousel for home page http://www.globalrust.org/traction/permalink/Resources1775 Image carousel for home pagehttp://www.globalrust.org/traction/permalink/Resources1775 Image carousel for home page
Resources1775 | Posted by John Bakum | May 2, 2012 | 10:14 AM

BGRI Updates:

BGRI 2012 in Beijing

Calling all gene stewards!
BGRI to recognize responsible gene stewardship

Follow the BGRI:
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Add a Comment on this Article]]>2012-05-02T10:14:10-04:00John Recent advances and future perspectives in resistance breeding against Puccinia graminis f. sp. tritici, strain Ug99 (2012) [2012, gshifaraw] http://www.globalrust.org/traction/permalink/references1653 Recent advances and future perspectives in resistance breeding against Puccinia graminis f. sp. tritici, strain Ug99 (2012) [2012, gshifaraw]2012gshifarawhttp://www.globalrust.org/traction/permalink/references1653 Recent advances and future perspectives in resistance breeding against Puccinia graminis f. sp. tritici, strain Ug99 (2012) [:references:2012, :references:gshifaraw]
references1653 | Posted by John Bakum | April 27, 2012 | 3:18 PM

Shiferaw, G. A. ; Hoffmann, B.
Acta Agronomica Hungarica
Volume: 60, Issue 1
Pages: 71-86
DOI: 10.1556/AAgr.60.2012.1.8
Abstract:
The new stem rust strain, Puccinia graminis f. sp. tritici - Ug99, has been a rising threat since the alarm was rung in Uganda in 1998. The genetic and breeding dimensions of research against this disease include the development of vigorous molecular markers, the identification and introgression of multiple resistance genes, the translocation of alien chromosomes, the enrichment of breeding lines with crossability alleles and the development of interspecific hybrids. Resistance genes have been identified in the primary wheat gene pool and in alien sources such as Aegilops spp., Dasypyrum villosum, Secale cereale, Hordeum vulgare and Oryza spp. and some of these sources have been used to confer resistance as a function of single or multiple gene effects. Realizing the potential disaster if Ug99 and related variants break out in other regions, wheat-producing countries are characterizing their germplasm and improving their stem rust race tracking systems. Equally important is "appropriate genetic management", i.e. the use of currently effective resistance genes in such a way that the evolution and adaptation of new virulence will be deterred. This review will summarize the recent research advances and future perspectives in setting effective genetic barriers vis-a-vis the seemingly intractable spread and evolution of Ug99.

Add a Comment on this Article]]>2012-04-27T15:18:11-04:00John Genome-wide identification of QTL conferring high-temperature adult-plant (HTAP) resistance to stripe rust ( Puccinia striiformis f. sp. tritici) in wheat (2012) [2012, molecular breeding, jchen] http://www.globalrust.org/traction/permalink/references1652 Genome-wide identification of QTL conferring high-temperature adult-plant (HTAP) resistance to stripe rust ( Puccinia striiformis f. sp. tritici) in wheat (2012) [2012, molecular breeding, jchen]2012molecular breedingjchenhttp://www.globalrust.org/traction/permalink/references1652 Genome-wide identification of QTL conferring high-temperature adult-plant (HTAP) resistance to stripe rust ( Puccinia striiformis f. sp. tritici) in wheat (2012) [:references:2012, :references:jchen, :references:molecular breeding]
references1652 | Posted by John Bakum | April 27, 2012 | 3:14 PM

Chen, J. L. ; Chu, C. G. ; Souza, E. J. ; Guttieri, M. J. ; Chen, X. M. ; Xu, S. ; Hole, D. ; Zemetra, R.
Molecular Breeding
Volume 29, Issue 3
Pages: 791-800
DOI: 10.1007/s11032-011-9590-x
Abstract:
High-temperature adult-plant (HTAP) resistance to stripe rust (caused by Puccinia striiformis f. sp. tritici) is a durable type of resistance in wheat ( Triticum aestivum L.). This study identified quantitative trait loci (QTL) conferring HTAP resistance to stripe rust in a population consisting of 169 F 8:10 recombinant inbred lines (RILs) derived from a cross between a susceptible cultivar Rio Blanco and a resistant germplasm IDO444. HTAP resistance was evaluated for both disease severity and infection type under natural infection over two years at two locations. The genetic linkage maps had an average density of 6.7 cM per marker across the genome and were constructed using 484 markers including 96 wheat microsatellite (SSR), 632 Diversity Arrays Technology (DArT) polymorphisms, two sequence-tagged-site (STS) from semi-dwarf genes Rht1 and Rht2, and two markers for low molecular-weight glutenin gene subunits. QTL analysis detected a total of eight QTL significantly associated with HTAP resistance to stripe rust with two on chromosome 2B, two on 3B and one on each of 1A, 4A, 4B and 5B. QTL on chromosomes 2B and 4A were the major loci derived from IDO444 and explained up to 47 and 42% of the phenotypic variation for disease severity and infection type, respectively. The remaining five QTL accounted for 7-10% of the trait variation. Of these minor QTL, the resistant alleles at the two QTL QYrrb.ui-3B.1 and QYrrb.ui-4B derived from Rio Blanco and reduced infection type only, while the resistant alleles at the other three QTL, QYrid.ui-1A, QYrid.ui-3B.2 and QYrid.ui-5B, all derived from IDO444 and reduced either infection type or disease severity. Markers linked to 2B and 4A QTL should be useful for selection of HTAP resistance to stripe rust.

Add a Comment on this Article]]>2012-04-27T15:14:00-04:00John Cereal Research Centre falls to budget cuts 
 [April 2012, Canada, ug99] http://www.globalrust.org/traction/permalink/newsroom649 Cereal Research Centre falls to budget cuts 
 [April 2012, Canada, ug99]April 2012Canadaug99http://www.globalrust.org/traction/permalink/newsroom649 Cereal Research Centre falls to budget cuts 
 [:newsroom:April 2012, :newsroom:Canada, :newsroom:ug99]
newsroom649 | Posted by John Bakum | April 25, 2012 | 3:20 PM

Cereal Research Centre falls to budget cuts 

25 April 2012 - The Western Producer
Government cuts to wheat research are disappointing and will ultimately hinder production in Western Canada, says Grain Growers of Canada president Stephen Vandervalk...
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Add a Comment on this Article]]>2012-04-25T15:20:09-04:00John Farewell to Sam Kilonzo [blog] http://www.globalrust.org/traction/permalink/blog245 Farewell to Sam Kilonzo [blog]bloghttp://www.globalrust.org/traction/permalink/blog245 Farewell to Sam Kilonzo [:blog:blog]
blog245 | Posted by Linda McCandless | April 24, 2012 | 10:22 AM

The BGRI lost a committed member of the wheat rust family with the death of Sam Kilonzo on 13 April 2012, after a month-long illness. Services for Sam were held in Njoro, Kenya, on 21 April.

Sam was a friendly man with a big smile, who was always warm and welcoming to visitors at Njoro, which is where most of us first met him. Sam received his technical training at the Bukura INstitute of Agriculture from 1984-86 and started working for the Kenya Agricultural Research Institute (KARI) soon after. He was assigned to KARI-Njoro in 1999 in the pathology unit, and was promoted to senior technical assistant in 2007. Sam worked closely with Ruth Wanyera and Peter Njau in the wheat nurseries, screening for resistance to the Ug00 race of stem rust. Sam counted many international collaborators from national programs among his friends and colleagues. He will be sorely missed.
In other responsibilities, Sam was the ARI-Njoro Welfare Chairman and treasure of the Redeemed Church, where it is said he worked hard serving all with great respect, passion and enthusiasm. Sam was married to Jane Wanjiru Kilonzo and they had three children: Anthony, Faith and Sharon.
Our prayers and thoughts go out to his family and friends, especially his wife and children. May he rest in peace.
If you would like to make a donation to Sam's family, please contact Sridhar Bahavani at sbhavani@cgiar.org. Donations will be collected at the 2012 BGRI Technical Meeting in Beijing.
CIMMYT ran a tribute to Sam in this week's Informa (page 6).
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Add a Comment on this Article]]>2012-04-24T10:22:53-04:00lmccandless Yeshi Chiche [Ethiopia, gender, person, EIAR] http://www.globalrust.org/traction/permalink/advocacy2870 Yeshi Chiche [Ethiopia, gender, person, EIAR]EthiopiagenderpersonEIARhttp://www.globalrust.org/traction/permalink/advocacy2870 Yeshi Chiche [:advocacy:EIAR, :advocacy:Ethiopia, :advocacy:gender, :advocacy:person]
advocacy2870 | Posted by Cally Arthur | April 19, 2012 | 5:30 PM

Gender Research Coordinator
Ethiopian Institute of Agricultural Research
E-mail: yeshichechi10@gmail.com

Add a Comment on this Article]]>2012-04-19T17:30:03-04:00cally Plant scientists from Norwich Research Park are gathering evidence on the precise ways in which plants are affected by rising temperatures and falling rainfall levels [April 2012, ug99] http://www.globalrust.org/traction/permalink/newsroom647 Plant scientists from Norwich Research Park are gathering evidence on the precise ways in which plants are affected by rising temperatures and falling rainfall levels [April 2012, ug99]April 2012ug99http://www.globalrust.org/traction/permalink/newsroom647 Plant scientists from Norwich Research Park are gathering evidence on the precise ways in which plants are affected by rising temperatures and falling rainfall levels [:newsroom:April 2012, :newsroom:ug99]
newsroom647 | Posted by John Bakum | April 19, 2012 | 11:44 AM

Plant scientists from Norwich Research Park are gathering evidence on the precise ways in which plants are affected by rising temperatures and falling rainfall levels
19 April 2012 - SeedQuest
...Preserving biodiversity: A wild grass growing on coastal plains in Israel and South Lebanon could hold the key to stopping one of the world's most threatening cereal diseases: the Ug99 strain of stem rust which is destroying wheat across Africa and moving into the Middle East and Asia...
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Add a Comment on this Article]]>2012-04-19T11:44:28-04:00John Gender-Responsive Study to Understand The Relative Importance of Wheat Variety Traits in Hetossa, Ethiopia [Topics:Seminars, Topics:Ethiopia] http://www.globalrust.org/traction/permalink/knowledge138 Gender-Responsive Study to Understand The Relative Importance of Wheat Variety Traits in Hetossa, Ethiopia [Topics:Seminars, Topics:Ethiopia]Topics:SeminarsTopics:Ethiopiahttp://www.globalrust.org/traction/permalink/knowledge138 Gender-Responsive Study to Understand The Relative Importance of Wheat Variety Traits in Hetossa, Ethiopia [:knowledge:Topics:Ethiopia, :knowledge:Topics:Seminars]
knowledge138 | Posted by John Bakum | April 18, 2012 | 2:10 PM

Presented by: Katie Nelson, Cornell University
15 March 2012 - at Cornell University
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Add a Comment on this Article]]>2012-04-18T14:10:20-04:00John Examining gender influenced variety decisions in Ethiopia [blog, Other:Ethiopia] http://www.globalrust.org/traction/permalink/blog243 Examining gender influenced variety decisions in Ethiopia [blog, Other:Ethiopia]blogOther:Ethiopiahttp://www.globalrust.org/traction/permalink/blog243 Examining gender influenced variety decisions in Ethiopia [:blog:blog, :blog:Other:Ethiopia]
blog243 | Posted by John Bakum | April 18, 2012 | 12:43 PM

18 April 2012 - Katie Nelson, a master's degree candidate in crop and soil sciences, surveyed Ethiopian farmers about highly sought-after traits in new wheat varieties in an attempt to quantify wheat-breeding priorities of specific populations, such as women farmers.
Watch video and powerpoint slides of Katie Nelson's presentation "Gender-Responsive Study to Understand The Relative Importance of Wheat Variety Traits in Hetossa, Ethiopia." presented 15 March 2012 at Cornell University.
"Women play a big role in farming in Ethiopia, and I want to determine if their wants and needs were being met by current variety deployment strategies," Nelson said. Nelson conducted a positioning study in Ethiopia in June 2011, interviewing more than 40 farmers and asking them to rate the importance of attributes of the wheat varieties they plant, including size and color of the grain, and price. "This visit provided me the framework that guides the rest of the study," Nelson said. "And it was vital for me as [an] introduction not only to the farmers, but also to local customs and practices."
Armed with this data, Nelson determined six attributes farmers look for: number of tillers, density of kernels, size of grain (large or small), color of grain, rust disease resistance and price per 100 kg.

Returning to Ethiopia in January, Nelson interviewed more than 300 farmers, showing them pictures of 18 hypothetical varieties with differences in each of the six traits. The farmers ranked each of the six attributes on a 0-6 scale, 0 being "would never buy this seed" and 6 "would definitely buy this seed." This approach revealed the importance of each trait relative to the others.

Nelson will complete additional data analysis that will provide specific conclusions. She will create groups of farmers who share the same variety preference (e.g., desired color of the grain) and identify demographic traits they share. For example, the group that most highly values kernel density could be mostly women farmers.

"This information will be important, because rather than assume there are no differences in agronomic preferences for wheat varieties, we will have data to show where subtle differences could have an impact," Nelson said.
If Nelson determines female farmers or other demographic groups share trait preferences, breeders can target those specific groups or traits.

"It's important not to assume that all women farmers will prize the same traits; some women farmers are head of household, others are in male-headed households, and what they deem important might be different," she said.

As Nelson has sifted through the data, surprises have arisen.
"Before the interviews I thought that farmers would not choose the highest-priced variety as something they would purchase," Nelson said. "But in most cases they not only consume the wheat they grow, they also sell it. So they felt the highest price seed indicated the highest quality, which means higher prices at market."
Nelson's research is part of the Gender Initiative in the Durable Rust Resistance in Wheat (DRRW) project, administered by the College of Agriculture and Life Sciences and funded by the Bill & Melinda Gates Foundation and the United Kingdom's Department for International Development.
"Katie's important research is going to serve as a springboard for the next four years of the DRRW project. Engaging with women farmers -- and female scientists -- is a vital component of any future gains in food security and breeding techniques," said Sarah Davidson Evanega, associate director of DRRW and adjunct professor of plant breeding and genetics.
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Add a Comment on this Article]]>2012-04-18T12:43:09-04:00John Competitive Graduate Student Symposium at the BGRI 2012 workshop [blog, education, Other:BGRI2012] http://www.globalrust.org/traction/permalink/blog238 Competitive Graduate Student Symposium at the BGRI 2012 workshop [blog, education, Other:BGRI2012]blogeducationOther:BGRI2012http://www.globalrust.org/traction/permalink/blog238 Competitive Graduate Student Symposium at the BGRI 2012 workshop [:blog:blog, :blog:education, :blog:Other:BGRI2012]
blog238 | Posted by John Bakum | April 13, 2012 | 11:01 AM

Are you a student involved in cereal rust research? Would you like to present your work at the BGRI 2012 Technical Workshop in Beijing? Submit a poster abstract and be considered for the Competitive Graduate Student Symposium—a plenary session at the September 2012 workshop. Three abstracts will be chosen and the authors will be invited to give oral presentations.
You do not have to be registered at the workshop to enter this competition. If you are selected, your travel and registration expenses will be paid.
Poster abstracts are due May 1 to Cally Arthur: caa9@cornell.edu.
** Use the words STUDENT ABSTRACT in the subject line of your message to be considered in the competition. **
Please contact Cally with questions.
**********
POSTER ABSTRACT GUIDELINES
Send abstracts to Cally Arthur at caa9@cornell.edu
Deadline: May 1, 2012.
Abstracts length maximum: 250 words.
Authors: first-initial (period) last-name
Multiple authors: Separate by commas
Affiliation: Identify each author’s institution with full address. Separate addresses with semicolons.
Give e-mail address of author for contacting.
If references are necessary, embed in the abstract in parentheses, e.g. (Hammond A, Austr J Agric Sci 45:102-105).
Example:
Surveillance and race analysis of stem rust in Kenya for the years 2008 and 2009
T. Fetch1, T. Jin2 and D. Hodson3
1Agriculture and Agri-Food Canada, Cereal Research Centre, Winnipeg, MN R3T2M9, Canada; 2USDA-ARS, Cereal Disease Laboratory, University of Minnesota, St. Paul, MN 55108, USA; 3International Focal Point, Wheat Rust Disease Global Program, AGP Division, FAO, Viale delle Terme di Caracalla 00100, Rome, Italy
e-mail: xx@agr.gc.ca
FINISHED POSTER DIMENSIONS: maximum 90 centimeters wide x 150 centimeters tall
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Add a Comment on this Article]]>2012-04-13T11:01:27-04:00John Tackle fungal forces for food security, say scientists [April 2012, wheat rust] http://www.globalrust.org/traction/permalink/newsroom644 Tackle fungal forces for food security, say scientists [April 2012, wheat rust]April 2012wheat rusthttp://www.globalrust.org/traction/permalink/newsroom644 Tackle fungal forces for food security, say scientists [:newsroom:April 2012, :newsroom:wheat rust]
newsroom644 | Posted by John Bakum | April 12, 2012 | 4:12 PM

Tackle fungal forces for food security, say scientists
12 April 2012 - SeedQuest
More than 600M people could be fed each year by halting the spread of fungal diseases in the world's five most important crops, according to research funded by BBSRC and others published today in the journal Nature.
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Add a Comment on this Article]]>2012-04-12T16:12:09-04:00John CIMMYT: A lasting tribute to Norman Borlaug [blog] http://www.globalrust.org/traction/permalink/blog235 CIMMYT: A lasting tribute to Norman Borlaug [blog]bloghttp://www.globalrust.org/traction/permalink/blog235 CIMMYT: A lasting tribute to Norman Borlaug [:blog:blog]
blog235 | Posted by John Bakum | April 11, 2012 | 4:01 PM

05 April 2012 - From the CIMMYT blog. On 25 March 2012, CIMMYT celebrated what would have been Norman Borlaug’s 98th birthday with the unveiling of a new statue at CENEB, Ciudad Obregón, Mexico. Read the entire post here.
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Add a Comment on this Article]]>2012-04-11T16:01:46-04:00John The race against rust [April 2012, wheat rust] http://www.globalrust.org/traction/permalink/newsroom642 The race against rust [April 2012, wheat rust]April 2012wheat rusthttp://www.globalrust.org/traction/permalink/newsroom642 The race against rust [:newsroom:April 2012, :newsroom:wheat rust]
newsroom642 | Posted by John Bakum | April 11, 2012 | 3:53 PM

The race against rust
11 April 2012 - Wheat Life
"Vaccinating" wheat varieties shows promise as researchers search for new resistance tools...
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Add a Comment on this Article]]>2012-04-11T15:53:43-04:00John Genetic structures of the CIMMYT international yield trial targeted to irrigated environments (2012) [2012, sdreisigacker, molecular breeding] http://www.globalrust.org/traction/permalink/references1651 Genetic structures of the CIMMYT international yield trial targeted to irrigated environments (2012) [2012, sdreisigacker, molecular breeding]2012sdreisigackermolecular breedinghttp://www.globalrust.org/traction/permalink/references1651 Genetic structures of the CIMMYT international yield trial targeted to irrigated environments (2012) [:references:2012, :references:molecular breeding, :references:sdreisigacker]
references1651 | Posted by John Bakum | April 5, 2012 | 3:45 PM

Dreisigacker, Susanne; Shewayrga, Hailemichael; Crossa, Jose; Arief, Vivi N.; DeLacy, Ian H.; Singh, Ravi P.; Dieters, Mark J.; Braun, Hans-Joachim
Molecular Breeding
Volume: 29, Issue 2
Pages: 529-541
DOI: 10.1007/s11032-011-9569-7
Abstract: International yield trials are assembled by CIMMYT to disseminate promising wheat breeding materials worldwide. To assess the genomic structure and linkage disequilibrium (LD) within this germplasm, wheat lines disseminated during 25 years of the Elite Spring Wheat Yield Trial (ESWYT) targeted for irrigated environments of the world were genotyped with the high-throughput Diversity Arrays Technology (DArT) marker system. Analyses of population structure assigned the ESWYT germplasm into five major sub-populations that are shaped by prominent CIMMYT wheat lines and their descendants. Based on genetic distance, we concluded that a constant level of genetic diversity was maintained over the years of ESWYT dissemination. Genetic distance between the individual ESWYT lines significantly increased when the ESWYT were grouped according to the differences in years of ESWYT dissemination, suggesting a systematic change in allele frequencies over time, most probably due to breeding and directional selection. By means of multiple regression analyses, 78 markers displaying a significant change in allele frequency across years were identified and interpreted as an indicator for constant selection. The markers identified were partly associated with grain yield, leaf, stem, and yellow rust and point to key genomic regions for further investigation. Large numbers of adjacent DArT marker pairs showed significant LD across the ESWYT population and within each of the five sub-populations identified. Sub-population differentiation measured by the fixation index and average genetic distance were highly correlated with LD levels, suggesting that the sub-populations themselves explain much of the LD.

Add a Comment on this Article]]>2012-04-05T15:45:21-04:00John Himachal Pradesh To Witness 2.24 Crores of Wheat Loss In The Current Year [April 2012, India, yellow rust] http://www.globalrust.org/traction/permalink/newsroom640 Himachal Pradesh To Witness 2.24 Crores of Wheat Loss In The Current Year [April 2012, India, yellow rust]April 2012Indiayellow rusthttp://www.globalrust.org/traction/permalink/newsroom640 Himachal Pradesh To Witness 2.24 Crores of Wheat Loss In The Current Year [:newsroom:April 2012, :newsroom:India, :newsroom:yellow rust]
newsroom640 | Posted by John Bakum | April 5, 2012 | 10:38 AM

Himachal Pradesh To Witness 2.24 Crores of Wheat Loss In The Current Year
05 April 2012 -IIFL (India)
As per latest release from Himachal Pradesh, Chief Minister Prem Kumar Dhumal , a fungal disease called Yellow Rust has again hit the wheat crop in Himachal Pradesh. Yellow Rust has again affected the wheat crop. This year's loss was assessed at 2.24 crore. Last year's loss owing to the fungal disease was Rs.5.5 crore out of the total estimated crop of Rs. 668 crore.
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Add a Comment on this Article]]>2012-04-05T10:38:47-04:00John Global incidence of wheat rusts and powdery mildew during 1969–2010 and durability of resistance of winter wheat variety Bezostaya 1 [2012, amorgounov, European Journal of Plant Pathology] http://www.globalrust.org/traction/permalink/references1650 Global incidence of wheat rusts and powdery mildew during 1969–2010 and durability of resistance of winter wheat variety Bezostaya 1 [2012, amorgounov, European Journal of Plant Pathology]2012amorgounovEuropean Journal of Plant Pathologyhttp://www.globalrust.org/traction/permalink/references1650 Global incidence of wheat rusts and powdery mildew during 1969–2010 and durability of resistance of winter wheat variety Bezostaya 1 [:references:2012, :references:amorgounov, :references:European Journal of Plant Pathology]
references1650 | Posted by Anna Garber | April 4, 2012 | 4:56 PM

Alexey Morgounov, Hale Ann Tufan, Ram Sharma, Beyhan Akin, Ahmet Bagci, Hans-Joachim Braun, Yuksel Kaya, Mesut Keser, Thomas S. Payne, Kai Sonder & Robert McIntosh
Disease incidence and severity was studied for winter wheat variety Bezostaya 1 and susceptible checks based on data from international nurseries from 1969 to 2010 and from 51 countries across major winter wheat production regions totaling 1047 reports. The frequency of leaf rust and stripe rust occurrence was stable over time with marked increases in severity in 2001-2010 especially in Europe and Central and West Asia. Substantial global reductions in stem rust occurrence were recorded and attributed primarily to use of resistance genes although the recent emergence of race Ug99 makes wheat more vulnerable. The occurrence of powdery mildew remained globally stable over time. It was the most important foliar disease in Western and Southern Europe, where the frequency was very high for all time periods coupled with slight increases in severity during 2001-2010. The durable resistance of variety Bezostaya 1 to all four diseases was demonstrated in the study using comparisons of disease severities of Bezostaya 1 and the most susceptible entries. The Lr34/Yr18/Pm38 pleiotrophic set possessed by Bezostaya 1 is currently an important target for selection because it is now amenable to molecular selection. Increased use of genes like Lr34 combined with strategies to minimize cultivation of extremely susceptible varieties will contribute to long term maintenance of low and non-damaging disease levels. The durable disease resistance of Bezostaya 1, combined with its adaptability and good end-use quality, was a significant reason for its huge impact in agriculture over the last 50 years.
  1. Bezostaya-abstract.pdf  (46.3 KB)

Add a Comment on this Article]]>2012-04-04T16:56:02-04:00agarber Durable Rust Resistance in Wheat project teams share progress [blog] http://www.globalrust.org/traction/permalink/blog231 Durable Rust Resistance in Wheat project teams share progress [blog]bloghttp://www.globalrust.org/traction/permalink/blog231 Durable Rust Resistance in Wheat project teams share progress [:blog:blog]
blog231 | Posted by Cally Arthur | March 25, 2012 | 2:15 AM

24 March 2012 DRRW project scientists met in Cd Obregon, Mexico on March 23 to share their progress and generate ideas to meet challenges. Team leaders gave presentations and generously allowed us to share them with you. View and download the PDF files.
And don’t forget to register for the BGRI 2012 Technical Workshop. Discounted registration fee ends April 1.
Visit wheatrust.cornell.edu for more information on the DRRW project.
  1. Objective-23 _all.pdf  (12.1 MB)
  2. Objective-23-Part-A.pdf  (3.1 MB)
  3. Objective-23-Part-B.pdf  (2.8 MB)
  4. Objective-23-Part-C.pdf  (1.1 MB)
  5. Objective-23-Part-D.pdf  (2 MB)
  6. Objective-23-Part-E.pdf  (1.6 MB)
  7. Objective-23-Part-F.pdf  (156 KB)
  8. Objective-23-Part-G.pdf  (1.1 MB)
  9. Objective-26.pdf  (1.7 MB)
  10. Objective-25.pdf  (1.7 MB)
  11. Objective-24_all.pdf  (2.8 MB)
  12. Objective-24_Part-A.pdf  (1.5 MB)
  13. Objective-24_Part-B.pdf  (1.3 MB)
  14. Objective-27.pdf  (1.5 MB)
  15. Objective-21 .pdf  (853.4 KB)
  16. South Asia_all.pdf  (2.3 MB)
  17. South Asia_Part-A.pdf  (1 MB)
  18. South Asia_Part-B.pdf  (1.3 MB)
  20. Gender-all.pdf  (4.8 MB)
  21. Gender part A (Role of Women).pdf  (900.1 KB)
  22. Gender part B (Capacity Building).pdf  (2.8 MB)
  23. Gender part C (Variety Selection).pdf  (1.1 MB)

Add a Comment on this Article]]>2012-03-25T02:15:41-04:00cally Microsatellite analysis of selected Puccinia triticina races in South Africa (2012) [2012, Australasian Plant Pathology, bvisser] http://www.globalrust.org/traction/permalink/references1647 Microsatellite analysis of selected Puccinia triticina races in South Africa (2012) [2012, Australasian Plant Pathology, bvisser]2012Australasian Plant Pathologybvisserhttp://www.globalrust.org/traction/permalink/references1647 Microsatellite analysis of selected Puccinia triticina races in South Africa (2012) [:references:2012, :references:Australasian Plant Pathology, :references:bvisser]
references1647 | Posted by John Bakum | March 23, 2012 | 11:18 AM

Visser,B.; Herselman,L.; Bender,C.M.; Pretorius, Z.A.p?
2012
Volume 41Issue 2
Start Page 165 Other Pages 171
Abstract Microsatellite analysis of ten South African races of Puccinia triticina, the causal organism of leaf rust of wheat ( Triticum aestivum), divided the population into two groups sharing 32% genetic similarity. In the first group, race 3SA145 (Agricultural Research Council notation) clustered with 3SA122 and 3SA125, two races that have not been detected recently. This grouping was supported by avirulence for Lr1 in all three races. The second group included the current dominant race 3SA133, that shared 42% genetic homology with the remaining six races. Five of these, including 3SA144, formed a sub-group with 96% genetic homology amongst them. It was concluded that 3SA144, detected on triticale in 2005 and virulent for Lr32, probably represents a mutation from an existing race, whereas 3SA145 most likely was an exotic introduction. Race 3SA145 was first detected in 2009 and differed from known races in terms of combined virulence for the adult-plant resistance genes Lr12, Lr13 and Lr37. Microsatellite analysis complemented traditional phenotypic characterization of P. triticina and provided insight on genetic relationships amongst older and more recently detected races in South Africa.

Add a Comment on this Article]]>2012-03-23T11:18:29-04:00John Calling all gene stewards! [blog] http://www.globalrust.org/traction/permalink/blog228 Calling all gene stewards! [blog]bloghttp://www.globalrust.org/traction/permalink/blog228 Calling all gene stewards! [:blog:blog]
blog228 | Posted by John Bakum | March 20, 2012 | 4:28 PM

20 March 2012 Is your research team diligent about developing or releasing durable varieties that will ensure long-term global wheat security? You may be eligible for the Borlaug Global Rust Initiative Gene Stewardship Award.
Click here for award guidelines
The BGRI Gene Stewardship Award will be presented annually at the BGRI Technical Workshop to recognize a researcher or team of researchers serving a national breeding program or other nationally based institution.
Award recipients will be those who demonstrate excellence in the development, multiplication and/or release of rust resistant wheat varieties through appropriate means that encourage diversity and complexity of resistance, promote the durability of the materials, and help implement the BGRI’s goal of responsible gene deployment and stewardship.
Nomination letters and supporting letters should be no longer than 2 pages each and should provide an explanation of how the nominee(s) has furthered the BGRI’s ethos of responsible gene stewardship.
Nomination Package: A complete nomination package should include
  • Nomination letter (self-nominations are acceptable)
  • 2 supporting letters
  • Information on the nominator and the nominee(s):
Nominator
Name:
Title:
Institution:
Address:
Telephone:
E-mail address:
Relationship to nominee(s):
Nominee(s) If more than one, list all co-nominees or contributing collaborators and their contact information.
Name:
Title:
Institution:
Address:
Telephone:
E-mail address:
Deadline: Nominations for the 2012 award are due by June 1, 2012.
Submission: Electronic submissions are preferred. Send nominations to Sarah Davidson Evanega by June 1, 2012 at snd2@cornell.edu.
Applications may be received by mail no later than June 1, 2012 to:
BGRI Gene Stewardship Award
c/o Sarah Davidson Evanega
251 Emerson Hall
Ithaca, NY 14853 USA
(607) 279-5577
  1. Gene Stewardship Award.docx  (18.3 KB)
  2. Gene Stewardship Award.pdf  (117.3 KB)

Add a Comment on this Article]]>2012-03-20T16:28:02-04:00John U.S. ag research programs hit by expenses to close USDA/ARS labs [March 2012, United States] http://www.globalrust.org/traction/permalink/newsroom638 U.S. ag research programs hit by expenses to close USDA/ARS labs [March 2012, United States]March 2012United Stateshttp://www.globalrust.org/traction/permalink/newsroom638 U.S. ag research programs hit by expenses to close USDA/ARS labs [:newsroom:March 2012, :newsroom:United States]
newsroom638 | Posted by John Bakum | March 20, 2012 | 4:13 PM

U.S. ag research programs hit by expenses to close USDA/ARS labs
20 March 2012 - SeedQuest
Agricultural research projects around the country will feel the spill-over effects of scheduled lab closings as USDA’s Agricultural Research Service (ARS) cuts from other projects the $40 million needed to move personnel and unwind real estate commitments. Additional cuts will be made to university projects funded through the USDA Wheat Rust Initiative, which conducts research on leaf, stripe and stem rust, including Ug99.
  1. UNST0001.GIF  (1.5 KB)

Add a Comment on this Article]]>2012-03-20T16:13:49-04:00John Sr5 http://www.globalrust.org/traction/permalink/ResistanceGenesGlossary179 Sr5http://www.globalrust.org/traction/permalink/ResistanceGenesGlossary179 Sr5
ResistanceGenesGlossary179 | Posted by John Bakum | March 14, 2012 | 11:22 AM

Updates
No matching articles

Chromosome Location: 6D (Sears et al., 1957); 6DS (RA McIntosh, unpublished 1984).

Low Infection Type: Usually 0 to ;. Sr5 is often cited as the 'immunity' gene from wheat stem rust research. The low infection type is usually very low but can be significantly higher (IT X) when Sr5 is transferred to a highly susceptible genetic background (Luig and Rajaram, 1972).

Environmental Variability: Low (Luig and Rajaram, 1972).

Origin: Common wheat. Sr5 is present in the Stakman et al. (1962) differential, Reliance C.I.7370, having been inherited from Kanred, a Crimean introduction to the USA.

Pathogenic Variability: Virulence occurs in all geographic areas (Luig, 1983; Huerta-Espino, 1992).

Reference Stocks
i: ISr5-Ra C.I.14159 (Loegering and Harmon, 1969); ISr5-Rb C.I.14161 (Loegering and Harmon, 1969); Line B = W2691*7/Reliance (Luig, 1983); Sr5/7*LMPG (Knott, 1990); Thatcher/10*Marquis (Knott, 1965). Although Marquis is susceptible to many pathotypes of economic significance, lines near-isogenic to Marquis may carry the genes Sr7b, Sr18, Sr19 and Sr20, which are present in this cultivar.

s: Chinese Spring*6/Thatcher 6D (Sears et al., 1957); Chinese Spring*7/Marquis 6D (Sheen and Snyder, 1964). The 'Marquis' line used by Sheen and Snyder was probably Thatcher or a closely related derivative.

v: Kanred (Sears et al., 1957). Thatcher Sr9g Sr12 Sr16 (Luig, 1983). Reliance Sr16 Sr18 Sr20 (Luig, 1983).

Source Stocks

Many wheats possess Sr5 (see Luig, 1983; McIntosh, 1988a).

Australia: Zenith. Catcher Sr2 Sr6 Sr8a Sr9g Sr12. Bindawarra Sr6 Sr9b Sr15. Aroona Sr8a Sr9b Sr15. Avocet Sr26; Hybrid Titan Sr26.

China; Dong-Fang-Hong 2; Ke-Fang 1. Dong-Xie 3 Sr31.

Europe: Panis; Primus. Hochzücht Sr9g Sr12. Orlando Sr31.

Indian Subcontinent: NP789 Sr11.

North America: Cheyenne; Chisholm; Justin; Winoka. Arthur Sr2 Sr8a Sr36. Fortuna Sr6 Sr7a Sr17. Era Sr6 Sr8a Sr17. Centurk Sr6 Sr8a Sr9a Sr17. Chris Sr7a Sr8a Sr9g Sr12. Oasis Sr8a Sr36. Apex Sr9g Sr12; Kitt Sr9g Sr12. Thatcher Sr9g Sr12 Sr16. Agatha Sr9g Sr12 Sr16 Sr25.

Use in Agriculture: At various times Sr5 has been a useful and very effective source of resistance. However, resistance proved transient in all geographic areas because of selection and rapid increase of virulent pathotypes. The dominance of Thatcher and its derivatives in the northern Great Plains of North America undoubtedly influenced the increase in pathotypes virulent for Sr5.
Source: Wheat Rusts: An Atlas of Resistance Genes (McIntosh, et al. 1995)

Plate 3-2. Sr5
Click here for larger image Click here for larger image
Seedlings of (L to R): Reliance, Zenith, ISr5-Ra, Line B (W2691*7/Reliance) and Chinese Spring; infected with A. pt. 194-2 [P5] and B. pt. 34-2 [p5]. With the avirulent culture, ISr5-Ra (genetic background of Chinese Spring) sometimes gives small necrotic pustules but in the W2691 background, Sr5 confers IT X. With the virulent culture, Reliance usually develops slightly smaller pustules than the other lines. This slightly retarded rusting has been attributed to Sr16.
References
No matching articles
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Add a Comment on this Article]]>2012-03-14T11:22:09-04:00John 2012 BGRI Technical Workshop early registration and poster deadlines [blog] http://www.globalrust.org/traction/permalink/blog223 2012 BGRI Technical Workshop early registration and poster deadlines [blog]bloghttp://www.globalrust.org/traction/permalink/blog223 2012 BGRI Technical Workshop early registration and poster deadlines [:blog:blog]
blog223 | Posted by Cally Arthur | March 13, 2012 | 4:35 PM

13 March 2012 Don't forget the deadline for the early registration discount to the 2012 BGRI Technical Workshop is April 1. Click here to register. And if you are thinking of preparing a poster to be displayed during the conference, submit your abstracts by May 1. Read more
WORKSHOP REGISTRATION: Deadline for the early registration discount is April 1. Click here to register.
POSTER ABSTRACT GUIDELINES
Submit: Send abstracts as email attachments in MS Word format to Cally Arthur at caa9@cornell.edu
Deadline: May 1, 2012.
Abstracts length maximum: 250 words.
-- Authors: first-initial (period) last-name
-- Multiple authors: Separate by commas
-- Affiliation: Identify each author’s institution with full address. Separate addresses with semicolons.
-- Contact author: Give e-mail address of author for contacting.
If references are necessary, embed in the abstract in parentheses, e.g. (Gerber-Hammond A, Austr J Agric Sci 45:102-105).
Example:
Surveillance and race analysis of stem rust in Kenya for the years 2008 and 2009
T. Fetch1, T. Jin2 and D. Hodson3
1Agriculture and Agri-Food Canada, Cereal Research Centre, Winnipeg, MN R3T2M9, Canada; 2USDA-ARS, Cereal Disease Laboratory, University of Minnesota, St. Paul, MN 55108, USA; 3International Focal Point, Wheat Rust Disease Global Program, AGP Division, FAO, Viale delle Terme di Caracalla 00100, Rome, Italy
e-mail: xx@agr.gc.ca
Photo credit: Ernesto Blancarte
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Add a Comment on this Article]]>2012-03-13T16:35:01-04:00cally