Tag Archives: Millennium Seed Bank

Radical New Potatoes

Potatoes are already a staple for 1.3 billion people… but unlike other major crops, however, the potato has not had a breeding breakthrough of the kind that helped dramatically boost yields during the Green Revolution of the 1950s and 1960s. The reason is that creating a new potato variety is slow and difficult, even by the patient standards of plant breeders…Readying a new potato variety for farm fields can take a decade or more.  Many countries continue to plant popular potato varieties that have remained essentially unchanged for decades. But new approaches, including genetic engineering, promise to add more options. Potato breeders are particularly excited about a radical new way of creating better varieties. This system, called hybrid diploid breeding, could cut the time required by more than half, make it easier to combine traits in one variety, and allow farmers to plant seeds instead of bulky chunks of tuber

Solynta Hybrid Potato Seeds

To breed a better potato, it helps to have plenty of genetic raw material on hand. But the world’s gene banks aren’t fully stocked with the richest source of valuable genes: the 107 potato species that grow in the wild. Habitat loss threatens many populations of those plants. In a bid to preserve that wild diversity before it vanishes, collectors have made their biggest push ever, part of a $50 million program coordinated by the Crop Trust, an intergovernmental organization based in Bonn, Germany.

The Crop Trust has provided grants and training to collectors around the world. The effort on wild potatoes, which wraps up this month, has yielded a collection representing 39 species from six nations: Peru, Brazil, Ecuador, Guatemala, Costa Rica, and Chile. Zorrilla’s team alone found 31 species in Peru, including one for which no seeds had ever been collected. They plan to continue to search for four other species still missing from gene banks. “We will not stop,” she says. The plants are being stored in each nation’s gene bank, CIP, and the Millennium Seed Bank at the Royal Botanic Gardens, Kew, in the United Kingdom. The stored seeds will be available to potato breeders worldwide.

THE HARDEST PART comes next: getting desirable genes from wild species into cultivated potatoes….Other researchers are skirting the limitations of traditional breeding by using genetic engineering. CIP’s Marc Ghislain and colleagues, for example, have directly added genes to already successful potato varieties without altering the plants in any other way—an approach not possible with traditional breeding. They took three genes for resistance to late blight from wild relatives and added them to varieties of potato popular in East Africa.

Potato Blight , a disease affecting potatoes

The engineered varieties have proved successful in 3 years of field tests in Uganda and are undergoing final studies for regulators. Transgenic potatoes that resist late blight have already been commercialized in the United States and Canada….

Pim Lindhout has been plotting a revolution that would do away with much of that tedium and complexity. As head of R&D for Solynta, a startup company founded in 2006, he and his colleagues have been developing a new way to breed potatoes….Breeders reduce the complexity either by using species with only two sets of chromosomes (known as diploids) or by manipulating domesticated potatoes to cut the number of chromosomes in half. With persistence, diploid potatoes can be inbred. In 2011, Lindhout published the first report of inbred diploid lines that are vigorous and productive. More recently, Jansky and colleagues also created inbred diploid lines.

Such diploid inbred plants are at the heart of Solynta’s strategy to revolutionize potato breeding. Other firms, including large seed companies, are also working to develop hybrid potatoes. HZPC in Joure, the Netherlands, has begun field trials in Tanzania and in several countries in Asia.

Excerpt from Erik Stokstad, The new potato, Science, Feb. 8, 2019

Gene Banks: saving world’s crops

Syria’s civil war has forced scientists to request the first-ever withdrawal of seeds from a Doomsday vault built in the Arctic to safeguard the world’s food supplies…The International Center for Agricultural Research in the Dry Areas (ICARDA) said it has made a request to take back some of its samples from the Svalbard Global Seed Vault. The vault was created by the Norwegian government in 2008 to protect vital crops such as wheat against global disasters, war or disease.

It will be the first time seeds have been withdrawn from the facility, which lies more than 800 miles inside Arctic Circle — midway between Norway and the North Pole — and is the largest vault of its kind in the world. Built into the mountainside on the Svalbard archipelago, it relies on permafrost and thick rock to ensure that the seed samples will remain frozen even without power..,ICARDA has requested approximately 16,500 of its seed samples — one seventh of the total it has stored in Svalbard — and hopes to reproduce them at its other facilities in Morocco and the American University in Beirut, Lebanon. Eventually it will send new samples back to Norway…

He said some scientists were still present at the Aleppo facility but that its one-time headquarters had been occupied by armed groups.  “Fortunately it is not ISIS, they are some fundamentalist groups,” he said. “They seem to co-exist. They are using the land for their own benefit, for example to grow legumes, but we have no control of it…..The Svalbard seed bank has exactly 865,871 samples from every country in the world, Asdal said.  “In fact, we have seeds from more countries than now exist,” he explained, since some of the older seeds are from now-defunct nations such as Czechoslovakia. Syria’s civil war has killed a quarter of a million people since 2011, according to United Nations estimates, and driven 11 million more from their homes.

Excerpts from ALASTAIR JAMIESON, Syria War Forces First Withdrawal from Svalbard Global Seed Vault,NBC News, Sept. 25, 2015

The Costs of Stopping Biopiracy

Botanists think there are up to 80,000 wild species of flowering plant left to discover. But a scarcity of funds hampers efforts to collect them. The UN Convention on Biological Diversity of 1992, ratified by 195 states and the European Union, made things more complicated. It recognised plants as part of countries’ national heritage and outlawed “biopiracy”—profiting from plants without compensating the countries in which they were found.

That made exploiting plants fairer but collecting them harder. Some officials saw a chance to get rich. “Suddenly everyone thought these plants were incredibly valuable,” says Mr Hawtin. Getting permission to go on a collecting trip became nearly impossible. “Anybody could say no to a collecting expedition and very few people could say yes.”

Permits became sine qua non, but in poorer countries the environment ministries that were expected to issue them did not always exist. Collectors might see their applications bounced from one department to another, each unwilling to wield its rubber stamp. “No one wanted to be accused in their local paper of helping the biopirates,” says Mr Hawtin.

Persistent botanists have since earned some governments’ trust. It is now much easier to get approval for expeditions than it was in the 1990s, though often with restrictions on what may be collected. “Things are much better now than they were ten years ago,” says Sandy Knapp, head of the plants division at the Natural History Museum in London. A three-year permit from the Peruvian government allows her to collect specimens of Solanaceae, the family that includes tomatoes, potatoes and aubergines…The Millennium Seed Bank now holds workshops in many countries on collection and conservation techniques. It collaborates on expeditions and produces guidebooks to help locals locate and collect seeds for themselves. Yet some countries persist in imposing self-defeating restrictions. India’s biodiversity law, passed in 2002, makes exporting seeds very difficult and sits poorly with its international obligations. If governments fail to understand the urgency of preserving—and sharing—their biodiversity, there may soon be precious little left to collect.

Excerpts from Botany and bureaucracy: A dying breed, Economist,  Sept. 12, 2015, at 55