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Who Done It? Or what's that brown fuzzy stuff on my plum?: Koch's Postulates for Proof of Pathogenicity


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Who Done It? Or what's that brown fuzzy stuff on my plum?: Koch's Postulates for Proof of Pathogenicity

In this lab, learners explore Koch's Postulates, the critical step used to prove that a particular microbe is the cause of a specific disease in a host organism (plant or animal). This is accomplished by examining the brown fuzzy stuff (a fungal pathogen) growing on a plum and experimentally showing, step by step, whether or not it is the cause of the observed disease. This lesson guide includes background information, instructions for leading a simplified (less time intensive) demonstration of the Germ Theory, study questions and answers, suggestions for additional experiments, and supplemental information and references. Adult supervision recommended.

Quick Guide


Preparation Time:
1 to 7 days

Learning Time:
1 to 4 weeks

Estimated Materials Cost:
Over $20 per group of students

Age Range:
Ages 11 - 18

Resource Types:
Activity, Experiment/Lab Activity, Lesson/Lesson Plan

Language:
English

Materials List (per group of students)


Subjects


  • Life Sciences
    • Diversity of Life
      • Plants
      • Viruses and Bacteria
      • Protists and Fungi
    • Human Body
      • Immune System
  • The Nature of Science
    • The Scientific Process
      • Conducting Investigations

Informal Categories


  • Food and Cooking

Audience


To use this activity, learners need to:

  • see
  • see color
  • touch

Learning styles supported:

  • Involves hands-on or lab activities

Other


Components that are part of this resource:

This resource is part of:

Access Rights:

  • Free access

By:

  • Jasalavich, Claudia A.; Schumann, Gail L.

Rights:

  • All Rights Reserved, The American Phytopathological Society, ©2011

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