Posts Tagged ‘Basic Wheat Improvement Course’

Researchers in Zambia confirm: Wheat blast has made the intercontinental jump to Africa

Wheat blast in experimental plots (Photo: Batiseba Tembo, ZARI)

Wheat blast, a fast-acting and devastating fungal disease, has been reported for the first time on the African continent, according to a new article published by scientists from the Zambian Agricultural Research Institute (ZARI), the International Maize and Wheat Improvement Center (CIMMYT) and the US Department of Agriculture – Foreign Disease Weed Science Research Unit (USDA-ARS) in the scientific journal PLoS One.

Symptoms of wheat blast first appeared in Zambia during the 2018 rainy season in experimental plots and small-scale farms in the Mpika district, Muchinga province.

Wheat blast poses a serious threat to rain-fed wheat production in Zambia and raises the alarm for surrounding regions and countries on the African continent with similar environmental conditions. Worldwide, 2.5 billion consumers depend on wheat as a staple food, and in recent years, several African countries have been actively working towards reducing dependence on wheat imports.

“This presents yet another challenging biotic constraint to rain-fed wheat production in Zambia,” said Batiseba Tembo, wheat breeder at ZARI and lead scientist on the study.

A difficult diagnosis

“The first occurrence of the disease was very distressing. This happened at the spike stage, and caused significant losses,” said Tembo. “Nothing of this nature has happened before in Zambia.”

Researchers were initially confused when symptoms of the disease in the Mpika fields were first reported. Zambia has unique agro-climatic conditions, particularly in the rainfed wheat production system, and diseases such as spot blotch and Fusarium head blight are common.

“The crop had silvery white spikes and a green canopy, resulting in shriveled grains or no grains at all…Within the span of 7 days, a whole field can be attacked,” said Tembo. Samples were collected and analyzed in the ZARI laboratory, and suspicions grew among researchers that this may be a new disease entirely.

Wheat blast in a farmer’s field in Mpika district, 2020 (Photo: Batiseba Tembo, ZARI)

A history of devastation

Wheat blast, caused by Magnaporthe oryzae pathotype Triticum (MoT), was initially discovered in Brazil in 1985, and within decades had affected around 3 million hectares of wheat in South America alone. The disease made its first intercontinental jump to Asia in 2016, causing a severe outbreak in Bangladesh, reducing yield on average by as much as 51% in the affected fields.

The disease has now become endemic to Bangladesh, and has potential to expand to similar warm, humid and wet environments in nearby India and Pakistan, as well as other regions of favorable disease conditions.

Wheat blast spreads through infected seeds and crop residues as well as by spores that can travel long distances in the air. The spread of blast within Zambia is indicated by both mechanisms of expansion.

Developing expert opinions

Tembo participated in the Basic Wheat Improvement Course at CIMMYT in Mexico, where she discussed the new disease with Pawan Singh, head of Wheat Pathology at CIMMYT.  Singh worked with Tembo to provide guidance and the molecular markers needed for the sample analysis in Zambia, and coordinated the analysis of the wheat disease samples at the USDA-ARS facility in Fort Detrick, Maryland.

All experiments confirmed the presence of Magnaporthe oryzae pathotype Triticum (MoT).

“This is a disaster which needs immediate attention,” said Tembo. “Otherwise, wheat blast has the potential to marginalize the growth of rain-fed wheat production in Zambia and may threaten wheat production in neighboring countries as well.”

Wheat blast observed in Mpika, Zambia  (Photo: Batiseba Tembo, ZARI)

A cause for innovation and collaboration

CIMMYT and the CGIAR Research Program on Wheat (WHEAT) are taking action on several fronts to combat wheat blast. Trainings, such as an international course led by the Bangladesh Wheat and Maize Research Institute (BWMRI) in collaboration with CIMMYT, WHEAT and others, invite international participants to gain new technical skills in blast diagnostics and treatment and understand different strategies being developed to mitigate the wheat blast threat. WHEAT scientists and partners are also working quickly to study genetic factors that increase resistance to the disease and develop early warning systems, among other research interventions. 

“A set of research outcomes, including the development of resistant varieties, identification of effective fungicides, agronomic measures, and new findings in the epidemiology of disease development will be helpful in mitigating wheat blast in Zambia,” said Singh.

Tembo concluded, “It is imperative that the regional and global scientific community join hands to determine effective measures to halt further spread of this worrisome disease in Zambia and beyond.”


Read the study:

Detection and characterization of fungus (Magnaporthe oryzae pathotype Triticum) causing wheat blast disease on rain-fed grown wheat (Triticum aestivum L.) in Zambia

Interview opportunities:

Pawan Kumar Singh, Senior Scientist and Head of Wheat Pathology (CIMMYT)

Batiseba Tembo, Wheat Breeder, Zambian Agricultural Research Institute (ZARI) batemfe@yahoo.com

For more information, or to arrange interviews, contact the media team:

Rodrigo Ordóñez, Communications Manager (CIMMYT) r.ordonez@cgiar.org


Acknowledgements

Financial support for this research was provided by the Zambia Agriculture Research Institute (ZARI), the CGIAR Research Program on Wheat (WHEAT), the Australian Centre for International Agricultural Research (ACIAR), and the US Department of Agriculture’s Agricultural Research Service (USDA-ARS). 

The Basic Wheat Training Program and Wheat Blast Training is made possible by support from investors including ACIAR, WHEAT, the Indian Council of Agricultural Research (ICAR), Krishi Gobeshona Foundation (KGF), the Swedish Research Council (SRC) and the United States Agency for International Development (USAID).

About Accelerating Genetic Gains in Maize and Wheat for Improved Livelihoods

Accelerating Genetic Gains in Maize and Wheat for Improved Livelihoods (AGG) is a 5-year project that brings together partners in the global science community and in national agricultural research and extension systems to accelerate the development of higher-yielding varieties of maize and wheat — two of the world’s most important staple crops.  Funded by the Bill & Melinda Gates Foundation, the UK Foreign, Commonwealth & Development Office (FCDO), the U.S. Agency for International Development (USAID) and the Foundation for Food and Agriculture Research (FFAR), AGG fuses innovative methods that improve breeding efficiency and precision to produce and deliver high-yielding varieties that are climate-resilient, pest- and disease-resistant, highly nutritious, and targeted to farmers’ specific needs.

About CIMMYT

The International Maize and What Improvement Center (CIMMYT) is the global leader in publicly-funded maize and wheat research and related farming systems. Headquartered near Mexico City, CIMMYT works with hundreds of partners throughout the developing world to sustainably increase the productivity of maize and wheat cropping systems, thus improving global food security and reducing poverty. CIMMYT is a member of the CGIAR System and leads the CGIAR programs on Maize and Wheat and the Excellence in Breeding Platform. The Center receives support from national governments, foundations, development banks and other public and private agencies. For more information visit www.cimmyt.org.

Q&A with Fatima Camarillo Castillo, CIMMYT Global Wheat Program Training Coordinator

This story by Janet Lewis was originally posted on the website of the Borlaug Training Foundation.

On February 3rd of 2020, the International Center for Maize and Wheat Improvement (CIMMYT) launched its annual Basic Wheat Improvement Course (BWIC).  The Borlaug Training Foundation’s Janet Lewis had a chat with Fatima Camarillo Castillo, CIMMYT’s Global Wheat Program Training Coordinator, to discuss the course and her role as coordinator.

2020 CIMMYT BWIC Trainee Group.
The 2020 CIMMYT BWIC Trainee Group at CIMMYT headquarters. Photo: CIMMYT

Janet Lewis: “Can you give our audience a brief description of the Basic Wheat Improvement Course?”

Fatima Camarillo Castillo: “The wheat improvement courses at CIMMYT are short-term programs designed to train breeders working on national agricultural programs from countries where wheat is a major staple crop. During the basic training program, we provide participants an overview of the breeding pipeline and review breeding methodologies utilized in the Global Wheat Program for developing superior wheat germplasm. We also review core concepts on support disciplines for breeding such as genetics, statistics, plant pathology, and physiology. A set of practical and hands-on exercises follow where trainees collaborate directly with scientists and technicians on breeding activities of the program.”

A group of 2019 Basic Wheat Improvement Course trainees in the field.
Photo: F. Caramillo Castillo/CIMMYT

JL: “What is your main role as the Training Coordinator?”

FCC: “I organize the content of the programs and communicate with the scientists to conduct the course. I also contribute to the training by lecturing on basic statistics, programming and genetics. During the training course, participants submit reports and prepare an oral and poster presentation. I support them by providing feedback on these activities. With the assistance of the training team, we also facilitate all the accommodations and arrangements for the participant’s trips and lodging in Mexico.”

JL: “What sparked your interest in being the training coordinator at CIMMYT?”

FCC: “As an alumnus, I personally understand the value of being part of this course. My goal as the current coordinator is to contribute to ensuring food security worldwide through training and capacity building on wheat research!”

A group of 2019 trainees pose in front of the statue of Norman Borlaug at CIMMYT’s Centro Experimental Norman E. Borlaug in Ciudad Obregon, Sonora.
Photo: F. Caramillo Castillo/CIMMYT

JL: “2019 was your first year as the training coordinator. What experiences captivated you the most from 2019?”

FCC: “My greatest experience last year was that, as a coordinator, you do not expect to learn. The class of 2019 was a wonderful group of bright researchers that challenged me to keep working to become a better teacher and scientist. Some of them already excel in specific disciplines, so they provide me invaluable support to cover the academic content of the program.”

2019 CIMMYT BWIC Trainee Group in the field.
2019 CIMMYT BWIC Trainee Group in the field. Photo: F. Caramillo Castillo/CIMMYT

JL: “The 2020 class started on February 4th. Do you have any special expectations this year? The Women in Triticum group is participating this year, yes?”

FCC: “We will spend a couple of weeks at the CIMMYT research station at El Batan and move to Ciudad, Obregón to complete the training. We hope that trainees will interact with current scientists already established in Obregón. In the past, trainees were assigned to specific research groups in the middle of the course, but this year trainees will be integrated into the breeding activities starting the first day of their arrival in Obregon! We expect this will expose and familiarize the trainees with the breeding pipeline on a larger scale.

This year we will also have the recipients of the Women in Triticum Early Career Award. All our young scientists that have dedicated their scientific career to wheat research from Ethiopia, Uruguay, Germany, India, China, Mexico, and Pakistan.”


If you’d like to learn more about the Basic Wheat Improvement Course or any programs offered at CIMMYT, you can find them at https://www.cimmyt.org/events/