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test 1 Flashcards

1
Q

What is Plant pathology?

A

The study of disease and suffering of plants.

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2
Q

Annihilating Disease-

A

May whip out species completely

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3
Q

Devastating Disease

A

May be severe for a few years then gradually subside.

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4
Q

Limiting Disease

A

disease build up to the point that it is not economical to grow a crop in a given field.

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5
Q

Debilitating Diseases

A

Occur almost annually and weaken crop, resulting in lower yields and poor quality.

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6
Q

Disease

A

Any disturbance by a pathogen or environment that interferes with normal function of a plant. or abnormal functioning of an organism.

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7
Q

What does a disease do?

A

injures and progressively gets worse over time.

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8
Q

Injury

A

damage caused by transitory interaction with insect ,chemical or unfavorable environmental conditions.

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9
Q

what two groups categorize disease?

A
  1. Abiotic 2. Pathogenic
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10
Q

abiotic diesease

A

non infectious, environmental. non infectious or physiological.

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11
Q

Pathogonic DIsease

A

infectious diseases.

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12
Q

Pathogen

A

A biological agent capable of causing an infectious disease.

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13
Q

Disease triangle

A

Pathogen, host, Environment

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14
Q

Vector

A

an organism capable of transmitting a pathogen.

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15
Q

Infectious disease

A

can be spread from diseased plant to a healthy plant.

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16
Q

Non-infectious Disease

A

cannot be transmited from a diseased plant to a healthy plant. caused by environmental factors.

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17
Q

Symptom

A

Plants response to disease

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18
Q

Sign

A

pathogen is visible (spores)

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19
Q

PhytoPathology

A

study of plant disease.

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20
Q

Injury

A

Damaged caused by transitory interaction with insects, chemical or unfavorable environmental condition.

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21
Q

host

A

Plant attacked by pathogen.

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22
Q

alternate host

A

one of the two kinds of plants on which a pathogen or parasite develops to complete its life cycle.

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23
Q

symptom complex

A

complete series of symptoms that occur as a disease progresses.

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24
Q

necrosis

A

death of plant tissue. brown,grey or black.

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25
Q

hyperplasia

A

increase in cell number

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26
Q

hypoplasia

A

decrease in cell number

27
Q

hypertrophy

A

increase in cell size

28
Q

hypotrophy

A

decrease in cell size

29
Q

parasite

A

an organism that obtains its nutrients wholly or in part from a host.

30
Q

parasitism

A

removal of food by

31
Q

pathogenicity

A

ability of a pathogen or parasite to interfere with one or more essential plant functions.

32
Q

obligate parasite(biotrophs)

A

organisms that can grow and reproduce only on/in living hosts.

33
Q

non-obligate parasite (necrotrophs)

A

can live on living or on dead hosts

34
Q

saprophyte

A

organism that can live on dead organic matter.

35
Q

facultative parasite

A

organism that is usually saprophytic but can become parasitic.

36
Q

facultative saprophyte

A

organism is usually parasitic but can become saprophyte.

37
Q

obligate saprophyte

A

lives only on dead organic matter, may act as secondary invader.

38
Q

how can we reduce the area of the disease triangle?

A

Use pest management practices.

39
Q

Using resistant cultivars reduces which side of trianlge?

40
Q

7 main categories of Symptoms (1-4)

A
  1. Abnormal Coloration of host 2.Wilting of host 3.death of host tissue 4. Defoliation and fruit drop.
41
Q

7 main Categories of Symptoms( 5-7)

A
  1. Abnormal growth increase 6.Stunting or Dwarfing of host 7.Replacement of host tissue
42
Q
43
Q
44
Q
45
Q
A

Dampering off

46
Q
47
Q
48
Q
49
Q
50
Q
A

interveinal chlorosis

51
Q
A

leaf blotch

52
Q
53
Q
54
Q
55
Q
A

mummification

56
Q
57
Q
58
Q
59
Q
60
Q
A

vein clearing

61
Q
A

witches broom

62
Q
63
Q

Inoculum

A

any part of a pathogen that can initiate disease.

Plant Pathology (6 decks)

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