Lecture 1 Intro

Question 1

What are different ways of being pathogens?

Answer 1

1. Biotrophs: Feed on living
   plants
2. Necrotrophs: Feed on dead
   plants
3. Semi-biotrophs: Slowly kill the plant and then feed on living and dead plant tissue.

Question 2

Why is it important to study the disease cycle?

Answer 2

It is important to study the disease cycle so we can help prevent the spread of diseases.

Question 3

What are the three things that need to be present for the disease to occur?

Answer 3

Environment, host, pathogen/factors (biotic or abiotic. Could be water, nutrition (abiotic) fungi,bacteria (biotic)).

Question 4

What are the three things that need to be present for the disease to occur?

Answer 4

Environment, host, pathogen/factors (biotic or abiotic. Could be water, nutrition (abiotic) fungi,bacteria (biotic)).

Question 5

What are the three things that need to be present for the disease to occur?

Answer 5

Environment, host, pathogen/factors (biotic or abiotic. Could be water, nutrition (abiotic) fungi,bacteria (biotic)).

Question 6

Define disease

Answer 6

Any malfunctioning of the host tissue that results from continuous irritation by pathogenic agents or environmental factor and leads to development of symptoms.

Question 7

What are three parts of a disease donut?

Answer 7

Disorder, disease, injury

Question 8

What are three parts of a disease donut?

Answer 8

Disorder, disease, injury

Question 9

Why do new diseases form?

Answer 9

Because of different climates. Ex: When Manitoba experiences abnormally hot summers, plants are prone to be affected by new diseases

Question 10

What percentage of crop loss is due to plant disease?

Answer 10

14.1%