Terminology Test 1 Flashcards Preview

Plant Pathology > Terminology Test 1 > Flashcards

Flashcards in Terminology Test 1 Deck (17)
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0
Q

Symptoms

A

Result of disease; morphological changes; spots, yellowing, stunting, gall

1
Q

Disease

A

Dynamic interaction between an organism and its environment which results in abnormal physiological morphological or neurological changes

2
Q

Signs

A

Often but not always present with disease; organism parts or products; ex rust spores, powdery mildew

3
Q

Necrosis

A

Death of tissue

4
Q

Pathogen

A

Organism that causes disease; pathogen does not equal disease

5
Q

Parasite

A

Relies on host for nutrition/food; some pathogens are parasites

6
Q

Biotroph/ obligate parasite

A

Pathogen that requires living host tissue

7
Q

Necrotroph/ saprophyte

A

Pathogens that obtain nutrients from non living host tissue

8
Q

Facultative saprophyte

A

Has the ability to survive off debris

9
Q

Facultative parasite

A

Has ability to be a parasite

10
Q

Polycycles

A

Cycles with repeating cycle (most plant diseases)

11
Q

Primary inoculum

A

From survival stage

12
Q

Secondary inoculum

A

From repeating cycles

13
Q

Growth regulators

A

Act like hormones on plants, very low concentrations; pathogens produce compounds like these

14
Q

Gibberlins

A

Why you so tall? Foolish seedling disease of rice

15
Q

Ethylene

A

Facilitate maturation, senescence, ripening; pathogen can produce this early

16
Q

Vector

A

Something that moves a pathogen to its host