Suppression of Immunity by Pathogens Flashcards
1
Q
How can pathogen effectors suppress immunity?
A
Pathogen effectors can prevent recognition of PAMPs
2
Q
How does Cladosporium fulvum suppress immunity?
A
- Pathogen secretes ECP6 which suppresses the early defence barrier
- ECP6 has domain similar to plant receptor for chitin.
- ECP6 has a higher affinity for chitin to absorbs all the plants chitin
3
Q
How does Gibberella fujikuroi suppress imunity?
A
The fungi promotes growth, but suppresses immunity.
- Promotes GA to break down DELLA gene
- Promotes growth but causes susceptibility.
4
Q
What is the DELLA gene?
A
Responsible for supressing growth, but facilitates high level immune response.
5
Q
How does Pseudomonas syringae suppress immunity?
A
It counteracts ABA induced stomatal closure, so pathogens can get in easier.
6
Q
What does Coronatine do?
A
Acts the same as JA + isoleucine, reopens stomata.
