AgronomyDiseasesStudy Looks at Late Blight Changes in Europe, Asia

Study Looks at Late Blight Changes in Europe, Asia


Scientists have been looking into the spread of potato late blight across Europe and Asia, a news release from the James Hutton Institute says on April 28.

The scientists tracked the distribution and diversity of dominant clones in Europe in 2020, and also assisted to a review of the development of the disease in Asia over the last 150 years, the release notes. Late blight was a major role of the Irish potato famine, and is still a huge problem for growers today — causing massive crop losses and has proven difficult to manage by chemical control and traditional breeding methods.

“The blight pressure in 2020 was lower than average with a prolonged spell of warm, dry weather early in the season which checked the development of the disease in many regions. The proportions of the main clones in the 2020 population structure were broadly similar to those reported in 2019,” David Cooke, James Hutton Institute researcher and co-leader of the EuroBlight study, says in the release.

The EuroBlight consortium, which includes Aarhus University, Wageningen University and INRAE, tracked the European spatial distribution of Phytophthora infestans since 2013, and added new data to show the distribution and diversity of dominant clones from the 2020 crop. The report, available on the research group website, combines information from 1,221 samples collected in 28 countries and genotyped in 2020.

The data shows the survival and spread of newer clones, while others are decreasing or have failed to establish, the release notes. This suggests they are evolutionarily fit and supports anecdotal evidence they are more challenging to manage in the field.

AsiaBlight has been launched recently. It is modelled after Euroblight, and brings together researchers from across the continent, to promote co-operation and data sharing with the goal of improving sustainable production of healthy potato crops.

The review, titled Potato late blight in Asia: Phytophthora infestans over a century and a half – a Plant Pathology highlight, was published in Plant Pathology.

Related Articles

Fighting Back Against Late Blight – A Spud Smart Innovation Series Webinar & Podcast

A Flu Shot for Potatoes

New Late Blight Resistance Genes Discovered

Trending This Week

Soil Moisture Tensiometer

Tips to Reduce Heat Stress on Potatoes

How to save your potato crop when hot temperatures happen. As a consequence of climate change, Ontario has been experiencing summer temperatures that exceed what’s...
Centre pivot in P.E.I.

P.E.I. Potato Board Calls on Feds to Listen to International Experts Report

The Prince Edward Island Potato Board is calling on the federal government to listen to the findings from an international panel of experts who...
Potatoes New Brunswick logo

Potatoes New Brunswick Announces 2022 Conference Program

The New Brunswick Potato Conference and Trade Show will feature sessions on precision agriculture, diseases and economics, a Jan. 20 website post said. The...
Cocktail of common scab on potatoes

Common Scab, a Problem without a Solution?

Common scab continues to cause concern for potato growers. Common scab, caused mainly by the seed and soil-borne bacterium Streptomyces scabies, continues to be a...
Fertilizer spreading

Manitoba Launches New Fertilizer Efficiency Calculator

Manitoba has launched a new fertilizer efficiency calculator tool based on field-specific soil test results and science-based analysis to provide application recommendations, a Jan....