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Pink Eye: The Periderm Disorder Syndrome

December 2018




By Edward C. Lulai, Ph.D.
Research Chemist
USDA-ARS
Northern Crop Science Laboratory
Fargo, North Dakota
Phone: 701-239-1352
Email: ed.lulai@ars.usda.gov


Watch Presentation (18 min 32 sec)

for PC, Mac, and Articulate Mobile Player App (18.1 MB)
Video for Android (51.6 MB) | Video for iPhone (57 MB)

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Note: For the best viewing experience on your PC, please use Google Chrome. For the best iPad viewing experience, you will be prompted to download the free Articulate Mobile Player app.


Summary: This presentation will help consultants, county agents, growers, researchers and other practitioners in potato growing areas understand the complex nature of the costly problem formerly referred to as “pink eye”, now called “periderm disorder syndrome” (PDS). This disorder has no cure. An understanding of the physiological processes that give rise to the problematic symptoms is essential in guiding practitioners as they consider approaches to minimize costly losses from associated disease and defect development. Specifically, the presentation will answer the questions: what is the “periderm disorder syndrome” (aka “pink eye”) and what are its symptoms? Is it caused by pathogens or is it a physiological disorder? How does it arise and what do we know about possible ways to control or minimize it? By the end of this presentation, practitioners will have an understanding of the nature of the syndrome and its’ complexities, and will be able to use this information to help make decisions regarding emerging recommendations for storage, sale and processing of afflicted potatoes. This background information is crucial because, at present, there are no means of preventing or reversing PE/PDS development.





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