Potato famine mystery solvedtags: Ireland, Irish Potato Famine, History channel, famines
An international team of scientists has finally solved one of history’s greatest mysteries: What caused the devastating Irish potato famine of 1845? The research team, which published its findings in the journal eLife this week, used DNA sequencing of plant specimens dating from the mid-19th century to identify the pathogen that led to the death of nearly 1 million people and the mass emigration of another 2 million from Ireland by 1855. The discovery marks the first time scientists have successfully sequenced a plant’s genome from preserved samples and opens the door for further research into the evolution of pathogens and the spread of plant disease around the world.
Scientists have long known that it was a strain of Phytophthora infestans (or P. infestans) that caused the widespread devastation of potato crops in Ireland and northern Europe beginning in 1845. P. infestans infects the plant through its leaves, leaving behind shriveled, inedible tubers. The most likely culprit, they believed, was a strain known as US-1, which even today is responsible for billions of dollars of crop damage each year. To solve the mystery, molecular biologists from the United Kingdom, Germany and the United States examined DNA extracted from nearly a dozen botanical specimens dating back as far as 1845 and held in museum collections in the UK and Germany, which were then sent to the Sainsbury Laboratory in Norwich, England. After sequencing the genome of the 19th century samples and comparing them with modern blights, including US-1, they were able to trace the genetic evolution of P. infestans around the world and across centuries....
comments powered by Disqus
- New documentary explores the legacy of the 5,000 Rosenwald schools set up by a Sears magnate and Booker T. Washington
- Rare silent Native American movie of 1920s attracting a lot of interest
- It happened in Idaho and was the largest massacre of Indians in US history, but where exactly did it take place?
- Junípero Serra’s Missions Destroyed Entire Native Cultures. And Now He’s Going to Be a Saint.
- Isis destruction of Palmyra's Temple of Bel revealed in satellite images
- Two scholars from UT object to the Texas school's decision to remove the statue of Jefferson Davis
- A history professor explains why Americans are so prone to conspiracy theories
- Now Greg Grandin has come out with a study of Henry Kissinger
- Japanese historian upends the familiar narrative of WW 2 by taking a bottom up approach, focusing on fascism from the grassroots
- Holocaust-denying historian David Irving organises 'disgusting' £2,000-a-head holiday tours of former concentration camps and Hitler's HQ so people can 'make up their own mind about the truth'