Plant Defences against pathogens

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Terpenoids
Antibacterial and antifungal. May also create scent eg. menthol by mint plants
1 of 5
Phenols
Antibacterial and antifungal. Tannis in bark inhibit insect attack by binding to salivary proteins and deactivating enzymes. Insects ingest and lot and die, preventing transmission
2 of 5
Alkaloids
Nitrogen- containing compounds eg. caffine, nicotine. Bitter taste to inhibit herbivore feeding and inhibit enzyme action of metabolic activites. some inhibit protein synthesis, reducing grazing by larger animals
3 of 5
Defensive proteins(defensins)
Small cysteine-rich proteins, anti-microbial activity. Act on molecules in the plasma membrane of pathogens, inhibiting ion transport channels
4 of 5
Hydrolytic enzymes
Found in spaces between cells. eg. chitinases that break down chitin in fungal cell walls, gluconases that break glycosidic bonds and lysosomes that degrade bacterial cell walls
5 of 5

Other cards in this set

Card 2

Front

Antibacterial and antifungal. Tannis in bark inhibit insect attack by binding to salivary proteins and deactivating enzymes. Insects ingest and lot and die, preventing transmission

Back

Phenols

Card 3

Front

Nitrogen- containing compounds eg. caffine, nicotine. Bitter taste to inhibit herbivore feeding and inhibit enzyme action of metabolic activites. some inhibit protein synthesis, reducing grazing by larger animals

Back

Preview of the back of card 3

Card 4

Front

Small cysteine-rich proteins, anti-microbial activity. Act on molecules in the plasma membrane of pathogens, inhibiting ion transport channels

Back

Preview of the back of card 4

Card 5

Front

Found in spaces between cells. eg. chitinases that break down chitin in fungal cell walls, gluconases that break glycosidic bonds and lysosomes that degrade bacterial cell walls

Back

Preview of the back of card 5

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