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$40mn wind-borne wheat pathogen battle

$40mn investment for global research team to fight Ug99; a wind-borne wheat pathogen endangering food security worldwide

yellow, rust, ug99, africa, kenya, wheat, african, farming, problems, gates$40mn investment for global research team to fight Ug99; a wind-borne wheat pathogen endangering food security worldwide - Image credit : blogs.worldwatch.org

The UK’s Department of International Development (DFID) and the Bill & Melinda Gates Foundation will invest $40mn in a global project led by Cornell University to combat deadly strains of Ug99, an evolving wheat pathogen that poses a dangerous threat to global food security, particularly in the poorest nations of the developing world.

The five-year grant, made to the Durable Rust Resistance in Wheat (DRRW) project at Cornell will support efforts to identify new stem rust resistant genes in wheat, improve surveillance, and multiply and distribute rust-resistant wheat seed to farmers and their families.

“We cannot overstate the importance of this announcement on the part of two of the most important funders of solutions for addressing the causes of poverty, hunger and disease in the developing world,” said Ronnie Coffman, Cornell professor of plant breeding and genetics and director of the DRRW. “Against the backdrop of rising food prices, and wheat in particular, researchers worldwide will be able to play an increasingly vital role in protecting wheat fields from dangerous new forms of stem rust, particularly in countries whose people can ill afford the economic impact of damage to this vital crop.”

First discovered in 1998 in Uganda, the original Ug99 has also been found in Kenya, Ethiopia, Sudan, Yemen and Iran. A Global Cereal Rust Monitoring System, housed at the FAO, suggests strains of Ug99 are on the march, threatening major wheat-growing areas of Southern and Eastern Africa, the Central Asian Republics, the Caucasus, the Indian subcontinent, South America, Australia and North America.

History repeats

In the 1950s, a fatal strain of wheat stem rust invaded North America and ruined 40 per cent of the spring wheat crop. The late Norman Borlaug, winner of the Nobel Peace Prize and renowned plant breeder, led a team of scientists who developed high-yield rust-resistant varieties that helped launch the Green Revolution. But 50 years later, virulent new strains of the pathogen emerged unexpectedly in Uganda, putting at risk most of the wheat planted in farmers’ fields worldwide.

Yellow Rust

Two other rusts pose threats to wheat, leaf and stripe, or yellow rust. Stem rust, of which Ug99 is a variant, is the most feared because it can quickly lead to the loss of an entire harvest.

Since 2008, when the DRRW project was first funded with $26.8mn from the foundation, researchers have distributed new resistant wheat varieties for testing and evaluation in 40 countries; strengthened nurseries in Kenya and Ethiopia for screening wheat for vulnerability to rusts; and distributed nearly five tons of Ug99-resistant seed for planting in the at-risk nations of Ethiopia, Kenya, Egypt, Pakistan, Afghanistan, Bangladesh and Nepal.

“Wheat is one of Kenya’s most important crops, second only to maize. Our people depend upon it for food security,” said Ruth Wanyera, a plant pathologist with the Kenya Agricultural Research Institute in Njoro. “We hope this important investment on the part of the Gates Foundation and DFID will prompt other funders and policy makers in the industrialized and developing worlds to support efforts to protect our global wheat supply.”

Initially called to arms by Nobel Prize winner Norman Borlaug, the DRRW works closely with the Borlaug Global Rust Initiative (BGRI) on a global strategy to avert agricultural disaster for wheat.

“This is a major and much-welcomed investment,” said Jeanie Borlaug, daughter of the late Norman Borlaug, and chair of the BGRI. “My Dad used to say, ‘rust never sleeps.’ The world’s leaders are waking up to this threat.”


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