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Flashcards in Quiz 1 Deck (16)
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1
Q

Explain the basic principle of Plant Pathology

A

Why did the plant die and what can I do about it?

2
Q

Who was Anton deBary? What did he prove?

A
  1. Father of Plant Pathology

2. Proved that fungus caused leaf blight in potatoes

3
Q
Break down the Irish Potato Famine
1.
2.
3.
4.
5.
A
  1. Gave birth to the science of plant pathology
  2. Responsible for the first great wave of immigration into America
  3. Fungus impact on humanity
  4. Genetic Uniformity
  5. Distribution of crops
4
Q

Disease Triangle (3 things need for disease to occur)

A

Host
Environment
Disease Agent

5
Q

What are the two types of Casual Agents?

A

Biotic and Aboitic

6
Q

Biotic definition

A

Infectious

organism (pathogen) grows, multiplies, and spreads to other plants (only 10%)

7
Q

Abiotic definition

A

non-infectious

environmental conditions that impact plant development (90%) (Injury not a disease)

8
Q

Give me examples of Abiotic Physical, Chemical, and Mechanical

A

Physical

  • Temperature
  • Moisture

Chemical

  • Air Polluntants
  • Fertilizers and salts
  • Pesticides

Mechanical
-everything else

9
Q

Fungi basic description

A

Breaks down complex things into simple things

10
Q

Virus

A

gets into host, tells host to make copy, Virus message is stronger than cell message, and then tells messager cell to make more copies

11
Q

Bacteria

A

Get food from organic material

They are decomposers

12
Q

Most plants resist/tolerate disease, give some examples.

A

Tree gasing beetles

spore into tree, tree kills itself around the spore

13
Q

In order to get a disease, a plant must be what?

  • it lacks?
  • must have the right what?
A

susceptible
genetic tools to fight back
environment

14
Q

What do environmental conditions provide?
examples
1.
2.

A

They provide the pathogen opportunities

  1. They influence the host plant conditions
  2. They increase pathogen virulence
15
Q

What are the predisosing conditions?

A

Site (shade)
Weather (rainy)
Management (fertilizing)

16
Q

Difference between symptoms and signs

A

You observe symptoms, you see physical signs.