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:
TAG: Irish potato famine disease came from South America

(Date:11/18/2014)... 17, 2014 The Parenteral Drug Association (PDA) today ... will speak and at least seven more will participate in ... Omni Shoreham Hotel in Washington D.C. , ... have significant support from the regulatory agencies in ... in our effort to help advance the use of ...
(Date:11/15/2014)...  While we may still be a few years away ... Trek" to gain instant access to all that ailed his ... and tablets for monitoring and measuring our health are cropping ... seem a tad Orwellian to some, but a new survey ... technological opportunities into their healthcare regime. These are ...
(Date:11/11/2014)...  Forensicon, Inc., a Chicago -based ... the promotion of Yaniv Schiff from Senior ... Schiff,s new role as Director, he will lead company ... examiners and provide leadership within the company,s digital forensics ... Schiff joined Forensicon in 2006 ...
Breaking Biology News(10 mins):FDA's Janet Woodcock, EMA's Emer Cooke Headline PDA Quality Metrics Conference 2Americans May Be Ready for a Brave New World of Healthcare 2Americans May Be Ready for a Brave New World of Healthcare 3Americans May Be Ready for a Brave New World of Healthcare 4Yaniv Schiff Promoted to Director of Digital Forensics at Forensicon, Inc. 2
(Date:11/24/2014)... The new video, “ Save ... demonstrates how to reduce the number of instruments ... panel design can be complicated, requiring multiple chemical ... corrosion and deposition. Dedicated single and dual channel ... panel space. Additionally, installing and maintaining each transmitter, ...
(Date:11/24/2014)... Senior Vice President, General Manager for Clinical ... acumen Elsevier , a world-leading provider ... congratulates Diane Bartoli , Senior Vice President and ... Solutions, for being recognized in the 13 th ... Profiles in Diversity Journal ® . ...
(Date:11/22/2014)... November 21, 2014 Two new educational webinars ... comes next for ALS research and how the pharmaceutical industry ... the Ice Bucket Challenge: Where Does the ALS Money Go? ... 2 December 2014, Time: 1:30pm ET, Register to ... speaker Dr. Merit Cudkowicz, Julianne Dorn Professor of Neurology at ...
(Date:11/22/2014)... 21, 2014 Prominent academics, leaders ... gather on December 3rd at Genetic Rx, a ... GeneticRx will take place at the Joseph B. ... will discuss the present and future of genetic ... and gene editing—as well as the treatment of ...
Breaking Biology Technology:New Video Shows How to Simplify Cycle Chemistry Sample Panels to Save Time and Costs 2Elsevier Clinical Solutions' Diane Bartoli Featured In Profiles in Diversity Journal's 13th Annual Women Worth Watching Issue 2Elsevier Clinical Solutions' Diane Bartoli Featured In Profiles in Diversity Journal's 13th Annual Women Worth Watching Issue 3DrugDev Webinars in December to Explore What Comes Next for ALS Research and How We Can Make Life Easier for Clinical Sites 2Pioneering Academics and Key Industry Leaders to Discuss Rare Diseases and the Emergence of New Genetic Medicines at Genetic Rx on December 3rd 2
Cached News: