HOME >> BIOLOGY >> NEWS
Irish potato famine disease came from South America

Scientists at North Carolina State University have discovered that the fungus-like pathogen that caused the 1840s Irish potato famine originally came from the Andes of South America.

By comparing the sequences of both the nuclear and the cellular powerhouse, mitochondria, of nearly 100 pathogen samples from South America, Central America, North America and Europe, Dr. Jean Beagle Ristaino, professor of plant pathology at NC State, and a small team of researchers created "gene genealogies" that point the finger at an Andean point of origin for the pathogen, which is known as Phytophthora infestans.

The research is published online in Proceedings of the National Academy of Sciences.

Like family trees that genealogists use to trace family histories, the scientists used the pathogens' gene genealogy to track migration patterns of the different strains, or haplotypes, of the pathogen. In essence, Ristaino, former grad student Luis Gomez-Alpizar and Dr. Ignazio Carbone, all of NC State's Department of Plant Pathology, figured out how the pathogen's genes changed over time and tracked these changes on maps that look similar to family trees.

"By studying the pathogen's mutations, or changes in DNA, you can tell where the mutations originated and what strains spread to different parts of the world," Ristaino says. Most of the early mutations occurred in Peru and Ecuador in South America, according to the researchers' data.

Ristaino says there are a number of camps on the issue of the pathogen's center of origin. While 19th century scientists believed P. infestans came from South America, some present-day scientists believe Toluca, Mexico, to be the origination point. Early in the 20th century, Ristaino says, Toluca became a center for plant breeding studies, as scientists there collected potato seed from all over the world and tested it for resistance to the pathogen.

Ristaino says, however, that commercial prod
'"/>

Contact: Dr. Jean Ristaino
jean_ristaino@ncsu.edu
919-515-3257
North Carolina State University
1-Mar-2007


Page: 1 2 3

Related biology news :

1. Students discover 11,000 year old remains of Irish Elk
2. Allergy-busting worms, cold water corals and the science of Irishness
3. Potato wart eyed as risk to potato production
4. Being obese and a couch potato may have a biological basis in the brain
5. Malaria, potato famine pathogen share surprising trait
6. Finding rewrites the evolutionary history of the origin of potatoes
7. Researchers find gene that may be at root of potato blight
8. 15 generations of untrained jocks, couch potatoes show big physiological adaptations
9. Icelandic volcano caused historic famine in Egypt, says Rutgers-based team
10. Association between famine and schizophrenia may yield clues about inherited diseases and conditions
11. Gilbert Foundation and American Fed for Aging Research award grants on Alzheimers disease

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


(Date:4/26/2016)... 2016 Research and Markets has ... Market 2016-2020"  report to their offering.  , ,     ... The analysts forecast the global multimodal biometrics market ... the period 2016-2020.  Multimodal biometrics is ... as the healthcare, BFSI, transportation, automotive, and government ...
(Date:4/14/2016)... April 14, 2016 BioCatch ... Detection, today announced the appointment of Eyal Goldwerger ... role. Goldwerger,s leadership appointment comes at a ... of the deployment of its platform at several of ... technology, which discerns unique cognitive and physiological factors, is ...
(Date:3/29/2016)... , March 29, 2016 LegacyXChange, ... LegacyXChange "LEGX" and SelectaDNA/CSI Protect are pleased to announce ... used in a variety of writing instruments, ensuring athletes ... originally created collectibles from athletes on LegacyXChange will be ... of the DNA. Bill Bollander , ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... BEACH, Calif. , June 23, 2016  Blueprint ... new biological discoveries to the medical community, has closed ... co-founder Matthew Nunez . "We have ... us with the capital we need to meet our ... will essentially provide us the runway to complete validation ...
(Date:6/23/2016)... NEW YORK , June 23, 2016 ... the trading session at 4,833.32, down 0.22%; the Dow Jones ... the S&P 500 closed at 2,085.45, down 0.17%. Stock-Callers.com has ... INFI ), Nektar Therapeutics (NASDAQ: NKTR ... BIND Therapeutics Inc. (NASDAQ: BIND ). Learn more ...
(Date:6/23/2016)... ... June 23, 2016 , ... Regulatory Compliance ... consulting, provides a free webinar on Performing Quality Investigations: Getting to ... 12pm CT at no charge. , Incomplete investigations are still a major concern ...
(Date:6/23/2016)... FRANCISCO , June 22, 2016  Amgen (NASDAQ: ... sponsorship of the QB3@953 life sciences incubator ... human health. The shared laboratory space at QB3@953 was ... overcome a key obstacle for many early stage organizations ... part of the sponsorship, Amgen launched two "Amgen Golden ...
Breaking Biology Technology:
Cached News: