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funder_partner: Jiangsu Academy of Agricultural Sciences (JAAS)

CIMMYT and China join forces to tackle wheat disease in Africa

While wheat acreage has been increasing across the whole of Africa, the sub-Saharan countries account for a significant proportion of the total growth and yield, equaling an area of approximately 3.1 million hectares and a production of more than 9 million tons. However, in recent years, Fusarium head blight (FHB) or head scab has become a major disease in the region, causing significant reductions in yield and quality due to the lack of resistant varieties and management tools.

In China, a successful wheat shuttle breeding program by the Chinese Academy of Agricultural Sciences (CAAS) and CIMMYT for improving FHB has existed since the 1980s. Additionally, CIMMYT and the Jiangsu Academy of Agricultural Sciences (JAAS) have provided an FHB screening station in Nanjing since 2019. With a wealth of experience in confronting the disease, this ongoing partnership can help to solve the challenges currently faced by farmers in Africa.

To this end, CAAS, JAAS, and CIMMYT organized a training workshop on FHB management for Africa, which took place with financial support from China Aid in Beijing and Nanjing, China, between 10 and 23 April 2024. Twenty participants, 45% of which were women, attended the workshop, with specialists in wheat breeding, pathology, seed quarantine, and other related fields at public institutions in Ethiopia, Zambia, and Lesotho.

“This is the first time China has worked with an international organization to conduct an agricultural training workshop for sub-Saharan Africa,” said Zhonghu He, CIMMYT distinguished scientist and country liaison officer in China.

A hands-on demonstration at the Jiangsu Academy of Agricultural Sciences (JAAS) and CIMMYT Fusarium head blight (FHB) precision phenotyping platform helps scientists in Africa to better understand and fight the wheat disease. (Photo: Liu Xiyan/CAAS)

Practical tools to target FHB

Experts from China and CIMMYT shared their successful experiences of FHB management, including breeding resistant varieties. The trainees benefitted from hands-on experience of FHB identification, disease screening (including inoculum preparation, inoculation, and scoring), mycotoxin quantification techniques, and wheat breeding.

At the end of the workshop, the participants were extremely pleased to observe the impressive progress made in China on wheat FHB both on breeding and disease control, and they expressed strong willingness to contribute to collaboration between Africa, China, and CIMMYT on more wheat breeding and research. Netsanet Bacha Hei from the Ethiopian Institute of Agricultural Research (EIAR) was impressed with the scientific and technical expertise provided in the training and mentioned that sub-Saharan Africa needs similar practical trainings to mitigate the threat of FHB. Similar opinions were echoed by Doreen Malekano Chomba from the Zambian Plant Quarantine and Phytosanitary Service (PQPS), who discussed the need to have an effective in-country surveillance and monitoring to assess and manage FHB in the region.

Participants gather for the opening ceremony of the workshop at the Chinese Academy of Agricultural Sciences (CAAS) in Beijing. (Photo: Li Simin/CAAS)

Xu Zhang, who heads the FHB research program at JAAS, is very appreciative of the collaborative work that has been going on for several decades between CIMMYT and China, highlighting that the workshop represents another step in understanding and managing FHB in sub-Saharan Africa and beyond, Zhang said, JAAS and CIMMYT has grown together through strong partnership.

“This training lays firm groundwork for future China-Africa-CIMMYT collaboration on mitigating the threat of FHB and improving wheat production and food security in sub-Saharan African countries,” said He.

Celebrating collaboration in science

On the evening of 31 October 2023, CIMMYT held a partnership and alumni event with partners in China. Over 100 people from all over China joined the event in Beijing, which was chaired by He Zhonghu, distinguished scientist and CIMMYT country representative for China.

 

The event centered around the promotion and celebration of mutual collaboration in scientific research. In his opening speech, CIMMYT Director General Bram Govaerts celebrated the progress of the China-CIMMYT partnership, and highlighted what can further be achieved for global food security through continued partnership. His sentiments were echoed by the Vice President of the Chinese Academy of Agricultural Sciences (CAAS), Sun Tan, who expressed his high expectations and strong support for future collaboration between Chinese institutions and CIMMYT.

 

Bram Govaerts presents on China’s and CIMMYT’s partnership. (Photo: Lu Yan/CIMMYT)

The event saw four Chinese institutions sign agreements with CIMMYT to promote mutual partnership: the Institute of Crop Sciences at CAAS, Huazhong Agricultural University, Henan Agricultural University, and Xinjiang Academy of Agricultural Sciences. Additionally, a ceremony was held in which 28 alumni and four partner institutions received awards for their contributions to scientific collaboration.

A fruitful partnership

China and CIMMYT have had a fruitful partnership over the past 45 years in areas including shuttle breeding, genomic research, sustainable crop systems and trainings that have greatly contributed to strengthening China’s food security with positive spillover effects to neighboring countries in the region.

The successful CIMMYT-China collaboration in shuttle breeding from the 1980s laid the foundations for the establishment of CIMMYT’s office in China in 1997. Bilateral cooperation then expanded to set up a Joint Lab between CIMMYT and the Ministry of Agriculture and Rural Affairs (MOARA), in which more than 20 Chinese agricultural research institutes also participated. More recently in 2019, CIMMYT and the Jiangsu Academy of Agricultural Sciences jointly opened a new screening facility for the deadly and fast-spreading fungal wheat disease, fusarium head blight.

Bram Govaerts and Fan Shenggen receive an award from former visiting scientists. (Photo: Lu Yan/CIMMYT)

CIMMYT has transferred approximately 26,000 wheat seed samples to more than 25 institutions in China, which are now using these materials in their breeding or crop improvement programs. As a result of these efforts, 300 wheat cultivars derived from CIMMYT germplasm have been released and are currently grown on 10% of China’s wheat production area. This collaboration between CIMMYT and China has yielded 10.7 million tons of wheat grain with an estimated value of $3.4 billion.

Additionally, CIMMYT-derived maize varieties have been planted on more than one million hectares across China, and 3,000 new inbred maize lines have been introduced through CIMMYT to broaden the genetic base of Chinese breeding efforts in southwestern provinces.

New international partnership to identify and develop resistance to dangerous wheat disease

CIMMYT and JAAS representatives signed the agreement to establish a screening facility for Fusarium head blight in Nanjing, China.
CIMMYT and JAAS representatives signed the agreement to establish a screening facility for Fusarium head blight in Nanjing, China.

The CGIAR Research Program on Wheat (WHEAT), led by the International Maize and Wheat Improvement Center (CIMMYT) and the International Center for Agriculture in the Dry Areas (ICARDA), recently announced a partnership with the Jiangsu Academy of Agricultural Sciences (JAAS) in China to open a new screening facility for the deadly and fast-spreading fungal wheat disease Fusarium head blight, or FHB.

The new facility, based near the JAAS headquarters in Nanjing, aims to capitalize on CIMMYT’s world-class collection of disease-resistant wheat materials and the diversity of the more than 150,000 wheat germplasm in its Wheat Germplasm Bank to identify and characterize genetics of sources of resistance to FHB and, ultimately, develop new FHB-resistant wheat varieties that can be sown in vulnerable areas around the world.

“The participation of JAAS in the global FHB breeding network will significantly contribute to the development of elite germplasm with good FHB resistance,” said Pawan Singh, head of wheat pathology for CIMMYT.

“We expect that in 5 to 7 years, promising lines with FHB resistance will be available for deployment by both CIMMYT and China to vulnerable farmers, thanks to this new station.”

Fusarium head blight is one of the most dangerous wheat diseases. It can cause up to 50% yield loss and produce severe mycotoxin contamination in food and feed, which affects farmers in the form of increased health care and veterinary care costs, and reduced livestock production.

Even consuming low to moderate amounts of Fusarium mycotoxins may impair intestinal health, immune function and fitness. Deoxynivalenol (DON), a mycotoxin the fungus inducing FHB produces, has been linked to symptoms including nausea, vomiting, and diarrhea. In livestock, Fusarium mycotoxin consumption exacerbates infections with parasites, bacteria and viruses — such as occidiosis in poultry, salmonellosis in pigs and mice, colibacillosis in pigs, necrotic enteritis in poultry and swine respiratory disease.

In China, the world’s largest wheat producer, Fusarium head blight is the most important biotic constraint to production.

The disease is extending quickly beyond its traditionally vulnerable wheat growing areas in East Asia, North America, the southern cone of South America, Europe and South Africa — partly as a result of global warming, and partly due to otherwise beneficial, soil-conserving farming practices such as wheat-maize rotation and reduced tillage.

“Through CIMMYT’s connections with national agricultural research systems in developing countries, we can create a global impact for JAAS research, reaching the countries that are expected to be affected the expansion of FHB epidemic area,” said Xu Zhang, head of Triticeae crops research group at the Institute of Food Crops of the Jiangsu Academy of Agricultural Sciences.

The new collaborative effort will target Fusarium head blight research but could potentially expand to research on other wheat diseases as well. Wheat blast, for example, is a devastating disease that spread from South America to Bangladesh in 2016. Considering the geographical closeness of Bangladesh and China, a collaboration with CIMMYT, as one of the leading institutes working on wheat blast, could have a strong impact.

Although the platform is new, the two institutions have a longstanding relationship. The bilateral collaboration between JAAS and CIMMYT began in early 1980s with a shuttle breeding program between China and Mexico to speed up breeding for Fusarium head blight resistance. The two institutions also conducted extensive germplasm exchanges in the 1980s and 1990s, which helped CIMMYT improve resistance to Fusarium head blight, and helped JAAS improve wheat rust resistance.

Currently, JAAS and CIMMYT are working on Fusarium head blight under a project funded by the National Natural Science Foundation of China called “Elite and Durable Resistance to Wheat Fusarium Head Blight” that aims to deploy resistance genes/QTL in Chinese and CIMMYT germplasm and for use in wheat breeding.

This research is supported by CGIAR Fund Donors.


INTERVIEW OPPORTUNITIES:

Xinyao He, Wheat Pathologist and Geneticist, Global Wheat Program, CIMMYT. x.he@cgiar.org, +52 55 5804 2004 ext. 2218

FOR MORE INFORMATION, CONTACT THE MEDIA TEAM:

Marcia MacNeil, Communications Officer, CGIAR Research Program on Wheat. m.macneil@cgiar.org, +52 55 5804 2004 ext. 2070.

Rodrigo Ordóñez, Communications Manager, CIMMYT. r.ordonez@cgiar.org, +52 55 5804 2004 ext. 1167.

ABOUT CIMMYT:

The International Maize and Wheat 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 Research 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 staging.cimmyt.org.

ABOUT JAAS:

Jiangsu Academy of Agricultural Sciences (JAAS), a comprehensive agricultural research institution since 1931, strives to make agriculture more productive and sustainable through technology innovation. JAAS endeavors to carry out the Plan for Rural Vitalization Strategy and our innovation serves agriculture, farmers and the rural areas. JAAS provide more than 80% of new varieties, products and techniques in Jiangsu Province, teach farmers not only to increase yield and quality, but also to challenge conventional practices in pursuit of original ideas in agro-environment protection. For more information, visit home.jaas.ac.cn/.