Genome editing could save ‘genetically decaying’ cassava staple that feeds 1 in 10 people

Screen Shot at AM

For breeders of cassava, a staple food for hundreds of millions in the tropics, producing improved varieties has been getting harder over time. A team at Cornell used genomic analysis of cassava varieties and wild relatives to make a diagnosis: Mutations have corroded the genome, producing many dysfunctional versions of genes and putting at risk a crop crucial to the survival of one-tenth of the world’s population.

“The analysis was cleanly able to show that cassava is genetically decaying,” said Ed Buckler, a research geneticist at the U.S. Department of Agriculture-Agricultural Research Service and adjunct professor of plant breeding and genetics…. “It’s getting worse through time as it picks up more and more mutations, so when breeders do make crosses they’re having to put more and more effort into finding the few offspring that contain at least one functional version of each gene.”

The findings are already being incorporated into the breeding models of the Cornell-based NextGeneration Cassava Breeding project….

“In the long run, using genome editing, we could provide the equivalent of personalized medicine to breeding lines,” Buckler said. “Essentially these mutations are like disease mutations in humans. And we’re getting to the point where we can identify those deleterious mutations and correct them.”

[Read the full study here.]

The GLP aggregated and excerpted this blog/article to reflect the diversity of news, opinion, and analysis. Read full, original post: Cassava is genetically decaying, putting staple crop at risk

For more background on the Genetic Literacy Project, read GLP on Wikipedia

Outbreak
Outbreak Daily Digest
Biotech Facts & Fallacies
Talking Biotech
Genetics Unzipped
Nigeriacotton

Video: We can ‘finally’ grow GMOs—Nigerian farmer explains why developing countries need biotech crops

Nigerian farmer Patience Koku discusses the GMO crop trials she is conducting on her farm, and why growers can "rise ...
mag insects image superjumbo v

Disaster interrupted: Which farming system better preserves insect populations: Organic or conventional?

A three-year run of fragmentary Armageddon-like studies had primed the journalism pumps and settled the media framing about the future ...
dead bee desolate city

Are we facing an ‘Insect Apocalypse’ caused by ‘intensive, industrial’ farming and agricultural chemicals? The media say yes; Science says ‘no’

The media call it the “Insect Apocalypse”. In the past three years, the phrase has become an accepted truth of ...
breastfeeding bed x facebook x

Infographic: We know breastfeeding helps children. Now we know it helps mothers too

When a woman becomes pregnant, her risk of type 2 diabetes increases for the rest of her life, perhaps because ...
organic hillside sweet corn x

Organic v conventional using GMOs: Which is the more sustainable farming?

Many consumers spend more for organic food to avoid genetically modified products in part because they believe that “industrial agriculture” ...
benjamin franklin x

Are most GMO safety studies funded by industry?

The assertion that biotech companies do the research and the government just signs off on it is false ...
gmo corn field x

Do GMO Bt (insect-resistant) crops pose a threat to human health or the environment?

Bt is a bacterium found organically in the soil. It is extremely effective in repelling or killing target insects but ...
favicon

Environmental Working Group: EWG challenges safety of GMOs, food pesticide residues

Known by some as the "Environmental Worrying Group," EWG lobbies for tighter GMO legislation and famously puts out annual "dirty dozen" list of fruits and ...
m hansen

Michael Hansen: Architect of Consumers Union ongoing anti-GMO campaign

Michael K. Hansen (born 1956) is thought by critics to be the prime mover behind the ongoing campaign against agricultural biotechnology at Consumer Reports. He is an ...
News on human & agricultural genetics and biotechnology delivered to your inbox.
Optional. Mail on special occasions.
Send this to a friend