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Winner of the 29th International AGROFILM Festival!

Item No. 46314D
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Once you purchase this digital download, you will receive an email to download a zipped folder containing the video in mp4 format. The video comes in one language (English).

Running time: 14:05 minutes

Also available in DVD-ROM Format

 Winner of the 29th International AGROFILM Festival!

Announcing another amazing teaching video
from Professors Verreet and Klink!

Late blight caused by the oomycete Phytophthora infestans is the most serious disease of potato crops worldwide. As a major culprit of the Irish potato famine in the mid-nineteenth century, late blight has had a tremendous effect on human history. Elucidation of the life cycle of P. infestans by German botanist Anton de Bary is claimed as a founding moment of modern plant pathology.

Using computer animations blended with real-life video and time-lapse photography, this teaching video impressively illustrates the life cycle of P. infestans. Your students and extension audiences will gain a clear understanding of the development and epidemiological spread of this fungus-like pathogen and the nature of the devastating disease it causes.

PowerPoint Lets You Add Specific Video Segments to Your Lectures and Talks from the Video Using: Video Trim
Full length videos can be trimmed for use in PowerPoint presentations. Trim this video to highlight specific sections for classroom demonstrations or use the full video to build an entire lecture.

All stages of the disease cycle are explained in detail:  

Asexual Reproduction:

  • Infected tubers as a source of inoculum
  • Transmission of mycelium to seedling
  • Formation of sporangiophores on leaves
  • Detachment and spread of sporangia
  • Direct and indirect germination
  • Zoospore production and release
  • Zoospore locomotion and encystment
  • Leaf infection and mycelial growth
  • Secondary sporulation and spread of disease
  • Infection of tubers

Sexual Reproduction:

  • A1 and A2 (opposite) mating types
  • Formation of male and female gametangia
  • Penetration of antheridium by oogonial initial
  • Expansion of oogonium
  • Meiosis and fertilization
  • Formation of thick-walled oospore
  • Dormancy period in soil
  • Germination of activated oospore
  • Release of zoospores

Potato Late Blight - The Disease Cycle of Phytophthora infestans DIGITAL DOWNLOAD

The download package contains the video in mp4 format and English audio. The mp4 format is compatible with most digital devices (Mac, Windows, and mobile devices).

Running time: 14:05 minutes

Potato Late Blight Video Terms of Use

Standard Limited Use License (for presentations or individual use)

Potato Late Blight is protected by copyright and its use is limited to individual use. It may be shown to, or viewed by, groups within a classroom or educational presentation setting, but may not be made available via local area network (LAN) without permission (permission for LAN also requires an additional LAN license fee). It may not be copied, or otherwise duplicated to share with other individuals in full or in part. It may not be transferred to the Internet in full or in part.

Local Area Network (LAN) License Upgrade (for multiple user access)

The video files and their content may not be run concurrently on more than one computer and may not be networked unless an upgraded Local Area Network (LAN) License is purchased. If a LAN License is purchased, its use is limited to a specific site access and must be controlled to include only staff and/or students at that location. Within the LAN License the videos may be shown with the same privileges as the Limited Use License and also allows the videos to be viewed by students and staff autonomously as long as they are limited to access from the specified single location. If you are interested in a single-site LAN license for this product, the additional cost is $300, please contact

If you are uncertain which license privileges you qualify for, please contact Distribution without the permission of the publishers is prohibited. Infringements will be prosecuted under civil and criminal law.

Publish Date: 2013
Format: mp4 video file
Running time: 14:05 minutes
Language: English
ISBN: 978-0-89054-631-4

By Professor Dr. Joseph-Alexander Verreet and Dr. Holger Klink

Potato Late Blight - The Disease Cycle of Phytophthora infestans DIGITAL DOWNLOAD

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