HOME >> BIOLOGY >> NEWS
Finding rewrites the evolutionary history of the origin of potatoes

MADISON - Humans have cultivated potatoes for millennia, but there has been great controversy about the ubiquitous vegetable's origins. This week, writing in the Proceedings of the National Academies of Sciences, a team led by a USDA potato taxonomist stationed at the University of Wisconsin-Madison has for the first time demonstrated a single origin in southern Peru for the cultivated potato.

The scientists analyzed DNA markers in 261 wild and 98 cultivated potato varieties to assess whether the domestic potato arose from a single wild progenitor or whether it arose multiple times - and the results were clear, says David Spooner, the USDA research scientist who led the study.

"In contrast to all prior hypotheses of multiple origins of the cultivated potato, we have identified a single origin from a broad area of southern Peru," says Spooner, who is also a UW-Madison professor of horticulture. "The multiple-origins theory was based in part on the broad distribution of potatoes from north to south across many different habitats, through morphological resemblance of different wild species to cultivated species, and through other data. Our DNA data, however, shows that in fact all cultivated potatoes can be traced back to a single origin in southern Peru."

The earliest archaeological evidence suggests that potatoes were domesticated from wild relatives by indigenous agriculturalists more than 7,000 years ago, says Spooner. Today, the potato - an international dietary staple - is a major crop in both the United States and in Wisconsin, which is fourth in the nation for potato production.

Potato diseases such as late blight can cause significant economic damage to farmers in America and throughout the world.

"As a taxonomist, my job is to help determine what is a species and to classify those species into related groups," Spooner explains. "Other scientists use these results as a kind of roadmap to guide them in the use of the
'"/>

Contact: David Spooner
dspooner@wisc.edu
608-264-5213
University of Wisconsin-Madison
3-Oct-2005


Page: 1 2

Related biology news :

1. Finding protection from tumor growth in unexpected places
2. Finding the white wine difference
3. Finding an answer to Darwins Dilemma
4. Finding a cure for cancer: The holy grail of science
5. Finding the right mix: A biomaterial blend library
6. Finding paves way for better treatment of autoimmune disease
7. Finding about cellular microtubule rigidity could lead to development of new nano-materials
8. Findings by Einstein scientists reveal possible strategy against obesity, diabetes and infertility
9. Finding of a new molecular marker of resistance to chemotherapy in breast cancer
10. Finding a cellular Neverland: How stem cells stay childlike
11. Finding a virus is not all bad news

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/18/2019)... ... April 18, 2019 , ... As the industry ... popular trial design that have the potential to increase patient recruitment and retention. ... sponsors due to the complexity of regulations, potential cost implications and a multitude ...
(Date:4/18/2019)... CREEK, Calif. (PRWEB) , ... April 18, 2019 ... ... for the healthcare industry, today announced the launch of mSource® AI Contract Text ... extract deep knowledge of Medpricer customers’ supplier contracts, truly optimizing purchased services spend ...
(Date:4/17/2019)... ... April 17, 2019 , ... Quartesian LLC, a ... clinical trial sponsors, has entered into a multi-year agreement with Medrio, a leading ... member of Medrio’s Certified Partner Program, to leverage the full range of Medrio’s ...
Breaking Biology News(10 mins):
(Date:4/18/2019)... Mass. (PRWEB) , ... April 18, 2019 , ... ... fossil fuels, a research team that includes a chemical engineer at Worcester Polytechnic ... exotic microorganism that may make it possible to manufacture isobutanol and other biofuels ...
(Date:4/16/2019)... , ... April 16, 2019 , ... ... Sources and their project partner, the U.S. Army Center for Environmental Health Research ... Biomonitor Through Combined In-Licensing/Out-Licensing.” , Blue Sources, a veteran-owned company located at the ...
(Date:4/16/2019)... ... April 16, 2019 , ... Fulcrum ... today announced that Bank South Pacific (BSP), the largest regionally owned bank in ... awarded Fulcrum a contract to deliver a fingerprint-based Know Your Customer (KYC) banking ...
(Date:4/15/2019)... ... April 15, 2019 , ... Sirrus, Inc., a developer of ... plant expansion to increase production of methylene malonate monomers and oligomers. , The ... Sirrus’ full-scale production facility, which is scheduled to break ground in 2019. “The ...
Breaking Biology Technology:
Cached News: