AgronomyDiseasesIrish Potato Famine Late Blight Strain Found on Six Continents

Irish Potato Famine Late Blight Strain Found on Six Continents

-

The strain of late blight which caused the Irish Potato Famine in the 1840s has been found on six continents, a study from North Carolina State University researchers has found.

The study, published in Scientific Reports, shows the strain called FAM-1 was found in nearly three-fourths of the samples and discovered on all six continents, a news release on the study notes. The genomes of about 140 pathogen samples from 37 countries on six continents were studied.

“FAM-1 was much more widespread than previously assumed, spreading from Europe to Asia and Africa along British colony trade routes,” Jean Ristaino, William Neal Reynolds, distinguished professor of plant Pathology and the corresponding author of the study, says in the release. “The lineage was also found over a span of more than 140 years.”

FAM-1 caused outbreaks of potato late blight in the United States in 1843 and then two years later in Great Britain and Ireland (the Irish Potato Famine), the release notes. It was also found in historic samples from Colombia — suggesting a South American origin.

FAM-1 survived for about 100 years in the U.S. but was then replaced by a sister strain of the pathogen called US-1, Ristaino says. US-1 has since been pushed out of the U.S. by even more aggressive strains of the pathogen from Mexico.

Related Articles

A Flu Shot for Potatoes

Study Looks at Late Blight Changes in Europe, Asia

U.S. Researchers Discover Wild Potato Genes for Late Blight Resistance

Trending This Week

Bar 9 Farms cover crop

Stopping Disappearing Soil on Bar 9 Farms in Alberta

0
Reducing soil erosion is the goal for Neil and James Bareman on their potato farm, Bar 9 Farms, in southern Alberta. Farming in southern Alberta...
Potato plants growing in a field

P.E.I. Potato Crop Looking for Rain

0
While the potato crop on Prince Edward Island is looking good it will need a timely rain to put it over the top, the...
Pink, puffy lesions

Keeping an Eye on Pink Eye

0
How to save your potato crop from pink eye in the field. Pink eye is a sporadic disorder of potato tubers that may result in...
Ontario potato crop

Ontario Potato Research Open House Happening Aug. 17

0
The Ontario Potato Research Open House is happening on Aug. 17 at the Elora Research Station, a July 26 emailed announcement said. The open...
Stephan Dolbec

Stephan Dolbec is Home Grown and Loving Running Patates Dolbec

0
Stephan Dolbec has expanded the family farm to make it a one stop shop from field to store. Growing up on the family farm, Stephan...