Plant Defences Against Pathogens Flashcards
1
Q
How do plants protect themselves from pathogens?
A
they produce antimicrobial chemicals
2
Q
What do antimicrobial chemicals do?
A
they target differences between plant cells and pathogens
e.g. cell wall in -
plants = cellulose
fungi = chitin
bacteria - peptidoglycan
3
Q
What do antimicrobial chemicals kill?
A
they kill the pathogens
4
Q
What can these chemical stop?
A
growth of the plants
5
Q
What physical barriers do plants have?
A
a waxy cuticle / bark which acts as a barrier to stop pathogens entering
6
Q
What happens if a plant becomes infected by a pathogen?
A
it spreads between cells via the plasmodesmata
7
Q
How do plants block their plasmodesmata?
A
with a carbohydrate called callose = callose deposition
