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  • International Programs
  • Plant Breeding and Genetics Section
  • Global Development
  • Plants
Ronnie Coffman, director of International Programs in the College of Agriculture and Life Sciences, addressed the International Wheat Congress July 23 in Canada, urging renewed commitment to germplasm exchange.

A global alliance of countries and research institutions, including Cornell, committed to sharing plant genetic material, has secured food access for billions of people, but a patchwork of legal restrictions threatens humanity’s ability to feed a growing global population.

That jeopardizes decades of hard-won food security gains, according to Ronnie Coffman, international professor of plant breeding and director of International Programs in the College of Agriculture and Life Sciences (IP-CALS).

“Global food security depends on the free movement and open sharing of plant genetic resources,” Coffman said July 23 at the International Wheat Congress in Saskatoon, Saskatchewan. “Without a strong commitment to scientific exchange in support of global plant breeding efforts, we risk our ability to respond to current food crises and to protect future generations.”

Effective plant breeding programs depend on the exchange of seeds and pathogens, as well as plant genetic material (known as germplasm) between and among countries. Coordination among plant pathologists and breeders forms a symbiotic partnership as plant and disease specimens collected in countries around the world are sent to research institutions to be analyzed and tested. Those findings in turn inform the breeding of improved, location-specific crop varieties that are resistant to disease and adapted to increasingly unpredictable environmental conditions.

The Convention on Biological Diversity gives countries sovereign rights over their own biological resources. The multilateral treaty, signed in 1993, allows each state to draw up its own regulations. An update known as the Nagoya Protocol, ratified in 2014, has subjected plant breeders and the seed industry to increased legal wrangling. Some countries are particularly draconian in their enforcement, and without a universal legal framework, the uneven standards threaten to undermine scientific exchange, Coffman said.

He argued that current regulations bring international lawyers, accountants and bankers with little to no background in plant breeding onto the playing field of crop improvement to act as referees. The patchwork of laws and norms, which have grown increasingly complicated in recent years, hampers scientific advancement and ultimately harms the farmers who depend on improved crops.

Coffman called for an overhaul of international laws that regulate the sharing of plant genetic resources, and for plant scientists to advocate to protect the unimpeded exchange of material and knowledge.

“It takes an international community of scientists and genetic resources to fight pathogens like stem rust that do not respect international boundaries,” he said. “Stringent regulations and country-specific control are stifling the germplasm exchanges critical to agriculture and horticulture.”

The CGIAR international research system – and especially the International Maize and Wheat Improvement Center (CIMMYT) and the International Center for Agricultural Research in the Dry Areas – are the conservators of enormous gene banks of germplasm. Those resources have been essential in improving many crops to fight biotic and abiotic stresses.

“Germplasm exchange and information sharing is paramount for global wheat improvement as they are the basis for much of the progress made,” said Hans Braun, director of CIMMYT's Global Wheat Program and the CGIAR Research Program on Wheat. “Going forward, we must protect open access and exchange because the value of germplasm resources in national and international gene banks can only be realized when they are shared and used.”

As one part of its efforts to reduce the world’s vulnerability to wheat diseases, the Cornell-led Delivering Genetic Gain in Wheat project – funded by the Bill & Melinda Gates Foundation and the United Kingdom’s Department for International Development – collects samples of plant pathogens such as stem rust and yellow rust from 40 countries and analyzes them in biosafety testing labs in Minnesota, Denmark, Canada, Turkey, Ethiopia, Kenya and India.

The DGGW relies on exchanges of germplasm and rust samples across international borders, and the project has encountered increased regulation in recent years, said Maricelis Acevedo, associate director of science for the DGGW and adjunct associate professor of plant pathology at Cornell.

“It takes an international community of scientists and genetic resources to fight pathogens like stem rust that know no international boundaries,” Acevedo said. “We must continue to protect — and use — those resources in our quest for global food security.”

Matt Hayes is associate director for communications in International Programs in the College of Agriculture and Life Sciences.

This article also appeared in the Cornell Chronicle.

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