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:3/17/2015)... Minn. , March 17, 2015 ... technology company specializing in clinical study management systems, ... be in attendance at ARENA,s Outsourcing in Clinical ... NC.  This event provides an excellent forum for ... easy-to-use, flexible and affordable software-as-a-service (SaaS) eClinical technology ...
(Date:3/12/2015)... , March 12, 2015 The mascots of ... Children,s Hospital, part of Wake Forest Baptist Medical Center. ... for the 2015 ACC Men,s Basketball Tournament. Young patients ... them and getting their autographs. Brenner Children,s ... It is the only children,s hospital in northwest ...
(Date:3/10/2015)... 2015  Continuing its 167-year history of offering the ... The Eye Scanning Password Authenticator , a device ... secure websites or sensitive data. Employing the ... borders, the device has a small camera that scans ... iris, converting them into an encrypted ID that cannot ...
Breaking Biology News(10 mins):Connect With MedNet Solutions At Outsourcing In Clinical Trials Southeast 2Hammacher Schlemmer Introduces The Eye Scanning Password Authenticator 2
(Date:3/25/2015)... 2015 /PRNewswire/ - SQI Diagnostics Inc. ("SQI" or the "Company") ... of recent discussions with certain shareholders representing approximately 45% ... after dealing with certain matters including the appointment of ... on March 26, 2015 (the "Meeting") it intends to ... will take place when the Meeting reconvenes. The Meeting ...
(Date:3/25/2015)... 25, 2015  S&P Capital IQ (MHFI) announced ... Report coverage on Abattis Bioceuticals Corp . ... is a specialty biotechnology company with capabilities through ... marketing proprietary ingredients, bio-similar compounds, patented equipment and ... North America . The company seeks to ...
(Date:3/25/2015)... , CAMBRIDGE, Mass. and ... NextCODE, which provides comprehensive capabilities for using the genome to ... on their publication of the largest studies of whole-genome data ... online in Nature Genetics – are ... sequence variation, authored by a team of deCODE scientists led ...
(Date:3/25/2015)... CA (PRWEB) March 25, 2015 ... for Novel Mechanism of Action in Neuromuscular Diseases ... 2015 – Cytokinetics, Incorporated (Nasdaq: CYTK) announced the ... skeletal muscle troponin activator tirasemtiv in the journal ... Phase IIa “Evidence of Effect” or hypothesis-generating clinical ...
Breaking Biology Technology:SQI Diagnostics Inc. Announces New Nominees to SQI Diagnostics Board and Adjournment of Meeting 2SQI Diagnostics Inc. Announces New Nominees to SQI Diagnostics Board and Adjournment of Meeting 3SQI Diagnostics Inc. Announces New Nominees to SQI Diagnostics Board and Adjournment of Meeting 4SQI Diagnostics Inc. Announces New Nominees to SQI Diagnostics Board and Adjournment of Meeting 5S&P Capital IQ Initiates Coverage on Abattis Bioceuticals Corp. in S&P Capital IQ Factual Stock Reports 2S&P Capital IQ Initiates Coverage on Abattis Bioceuticals Corp. in S&P Capital IQ Factual Stock Reports 3S&P Capital IQ Initiates Coverage on Abattis Bioceuticals Corp. in S&P Capital IQ Factual Stock Reports 4S&P Capital IQ Initiates Coverage on Abattis Bioceuticals Corp. in S&P Capital IQ Factual Stock Reports 5Landmark deCODE Studies Demonstrate the Power of Truly Big Genomics for Improving Medicine Worldwide 2Cytokinetics Announces Publication of Results from Phase II Trial of Tirasemtiv in Patients with Myasthenia Gravis 2Cytokinetics Announces Publication of Results from Phase II Trial of Tirasemtiv in Patients with Myasthenia Gravis 3Cytokinetics Announces Publication of Results from Phase II Trial of Tirasemtiv in Patients with Myasthenia Gravis 4Cytokinetics Announces Publication of Results from Phase II Trial of Tirasemtiv in Patients with Myasthenia Gravis 5Cytokinetics Announces Publication of Results from Phase II Trial of Tirasemtiv in Patients with Myasthenia Gravis 6
Cached News: