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Syllabus: Fall 2012 v.1.0

Tues. and Thur. 12:30 p.m.- 1:45 p.m.

Lectures in Marley 230, Labs in Marley 212/218
Instructor: Barry M. Pryor, Marley 541E
626-5312; E-mail:
Office Hours: TBA

Class website:

TA and co-instructor: Joe Vaughan, 626-2781,

Office Hours: Marley 822F, Tues & Thurs 3:00 - 4:00 and by appointment

If I am not in my office, check Marley 509-511

Preceptor: Milan Curry (

Discussion sessions: Tuesday 3-4 pm Marley 341H

For lecture presentations, click here

For weekly questions, click here

For recent class announcements, click here

Course Objectives Grading Policy
Textbooks Reading assingments
Lecture and Exam Schedule Related links

Course Objectives: to enjoy learning about Plant Pathology!!

And to become familiar with:

  1. Bacteria, viruses, fungi, nematodes and other organisms as plant pathogens
  2. The role of the environment in disease development
  3. Selected plant diseases
  4. Methods used in identification of plant pathogens
  5. Disease diagnosis
  6. Principles of disease management
  7. Mechanisms of pathogen invasion and plant defense






Schumann and D'Arcy, Essential Plant Pathology, Second Edition,. 2010

I'll also try to get this book on a 2 hour reserve in the main library (621-2348).

Reading assignments: see lecture schedule below

In addition, we will not discuss the diseases that are listed below during regular class lectures, so this material will be in addition to that presented in class. All of these lessons are available on the APS web site (http:/ under the pull down menu Education center - Teaching resources - Introductory - Plant Disease Lessons. At this same site you also will find a very good illustrated glossary and other lessons and information about plant diseases that will likely help you as you learn new terminology and concepts.

1. Before EXAM 2, read the lesson on apple scab

2. Before EXAM 3, read the lesson on crown gall disease

3. Before EXAM 4, read the lesson on tobacco mosaic virus

Exams and Grading:

Final numerical grades are calculated as a percentage of total points received by each student out of 460 possible points. There will be three exams and a final exam each worth 100 points. There will be weekly questions requiring short answers to be handed in, each set worth 3 points for a total of 42 points. And there will be a short practical lab exercise worth 18 points. Letter grades will be determined as follows:

A 90-100%
B 80-89%
C 70-79%
D 60-69%
E less than 60%

There will also be several opportunities to earn extra credit throughout the course of the semester. These will be discussed during the first few days of class.

Exrta Credit:

There will be several opportunities for extra credit in this class through a plant disease collection and end-of the-semester extra projects (50 points total, to be discussed). The points gained in these activities will be added to the regular points earned, but the final grade will still be based upon total points from required exams and assignments.

Incomplete Grades:

Incomplete grades will be given only under special circumstances according to the university policy as stated on page 26 of "The University of Arizona Record 98-99 General Academic Manual".

Academic Integrity:

Such issues will be handled according tothe university policy on academic integrity as described on page 18 of "The University of Arizona Record 98-99 General Academic Manual".

Special Needs and Accomodations:

Students with special needs may contact the Learning Disabilities Program/SALT, Old Main Bldg., Room 117 (621-1242) and/or the Center for Disability Related Resources/CDRR, Second and Cherry Streets (621-5227). Everything possible will be done to accommodate students with special needs. Please discuss your special needs in advance.

Tentative Lecture and Exam Schedule:

Date Topic
Aug. 21 Why study plant diseases? Historically significant plant diseases
Aug. 23 What is wrong with my plant?? Chapter 1.
Aug. 28 What types of plant disease are there? Chapter 8
Aug 30 How pathogens attack plants. Chapter 9.
Sept. 4 How pathogens attack plants. Chapter 9.
Sept. 6 How plants defend against pathogens. Chapter 9
Sept. 11 How plants defend against pathogens. Chapter 9.
Sept. 13 Introduction to the Pathogens
Sept. 18 Midterm Exam 1
Sept. 20 Introduction to fungi. Chapter 2.
Sept. 25 Fungi-Ascomycetes. Chapter 2
Sept. 27 Fungi - Ascomycetes. Chapter 2
Oct. 2 Fungi - Ascomycetes. Chapter 2
Oct. 4

Fungi - Basidiomycetes. Chapter 2.

Oct.9 Fungi - Basidiomycetes, rusts and smuts. Chapter 2.
Oct. 11 Class cancelled (study day?...)
Oct. 16 Midterm Exam 2
Oct. 18 Campus Plant Disease Tour
Oct. 23 Diseases caused by Oomycetes. Chapter 2.
Oct. 25

Diseases caused by bacteria. Chapter 3.

Oct. 30 Diseases caused by nematodes. Chapter 4.
Nov. 1 Diseases caused by viruses. Chapter 5.
Nov. 6 Diseases causes by higher plants. Chapter 6.
Nov. 8 Diseases causes by abiotic diseases. Chapter 7.
Nov. 13 Midterm Exam 3
Nov. 15 Lab Practical - a review of the pathogens
Nov. 20 Epidemiology. Chapter 10.
Nov. 22 Holiday: Thanksgiving
Nov. 27 Environmental effects on disease. Chapter 10.
Nov. 29

Control: cultural, chemical, biological. Chapter 11.

Dec. 4 Control: cultural, chemical, biological. Chapter 11.


Dec. 13

FINAL EXAM 10:30-12:30




Related resources:

The American Phytopathological Society web site

Extension Plant Pathology, The University of Arizona

UC IPM Online

Fruit Pathology: Disease Diagnostic Key

Vegetable Diseases at Cornell


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