Plant disease Flashcards
1
Q
physical plant defenses
A
- physical barriers
- bark
- waxy cuticle
- thorns and hairs
- drooping
2
Q
bark=
A
- think layer, like skin.
- dead cells act as a barrier
- seen on trees
- thickness varies
3
Q
waxy cuticle
A
- covers leaves in a waxy layer
- prevents water loss
- prevents pathogen penetration
4
Q
thorns and hairs
A
- avoids from being eaten/ interfered with by a pathogen carrying organism.
- thin pin hairs
- deters pests
(pathogen by association)
5
Q
chemical defenses
A
- poisons , deters pests, pathogen by association.
- Toxins, warns other aphids
- antibacterial compounds, chemicals that can kill bacterial infections
6
Q
plant diseases
A
- tobacco mosaic virus
- barley powdery mildew
- crown gall disease
7
Q
TMV
A
= virus
- in tobacco plants, peppers, tomatoes
- affects chloroplasts, prevents photosynthesis
8
Q
BPM
A
= fungus
- in grass and barley
- forms a fluffy white growth, prevents photosynthesis
9
Q
CGD
A
= Bacteria
- in a lot of plants
- like cancer, forms tumors, spreads quickly, contaminates soil.
10
Q
IDENTIFICATION
A
observation, by looking at the plant
11
Q
Lab Tests
A
- monoclonal antibodies can recognize a specific antigen
- Analyzing DNA= pathogens have their own DNA so they can be identified in samples.
