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:5/6/2017)... -- RAM Group , Singaporean based technology ... biometric authentication based on a novel  quantum-state ... perform biometric authentication. These new sensors are based on a ... Group and its partners. This sensor will have widespread ... security. Ram Group is a next generation sensor ...
(Date:4/13/2017)... , April 13, 2017 UBM,s Advanced Design ... will feature emerging and evolving technology through its ... Summits will run alongside the expo portion of the ... panels and demonstrations focused on trending topics within 3D ... design and manufacturing event will take place June 13-15, 2017 ...
(Date:4/11/2017)... 2017 NXT-ID, Inc. (NASDAQ:   NXTD ... the appointment of independent Directors Mr. Robin D. Richards ... of Directors, furthering the company,s corporate governance and expertise. ... Gino Pereira , Chief ... to their guidance and benefiting from their considerable expertise as ...
Breaking Biology News(10 mins):
(Date:5/23/2017)... ... May 22, 2017 , ... A new ... San Diego, California, this August will feature high-level speakers on quantum devices, graphene ... SPIE Optics and Photonics, the largest multidisciplinary optical sciences meeting in North America, ...
(Date:5/23/2017)... (PRWEB) , ... May 23, 2017 , ... Cambridge ... a splash at this year’s Bio-IT World Conference and Expo in Boston ... Data Lake® 4.0 solution. The Anzo Smart Data Lake is also a finalist ...
(Date:5/21/2017)... ... May 19, 2017 , ... ... educational conference of the American Association of Bioanalysts (AAB) and the College of ... Houston. The conference reinforces AAB’s commitment to excellence in clinical laboratory services and ...
(Date:5/18/2017)... San Diego, California (PRWEB) , ... May 18, ... ... looking for team-building activities. The Tapas Cooking Challenge is a two-hour team-building ... from a delicious menu created by Chef Jodi Abel, which include items, such ...
Breaking Biology Technology:
Cached News: