Potato Blight Flashcards
1
Q
What is the name of the oomycete that cause Potato Blight?
A
Phytophthora infestans
2
Q
How do oomycetes reproduce?
A
- Asexually (CLONALLY)
- Sexually (2 mating types: A1 and A2)
Oomycetes are DIPLOID (2n)
3
Q
What are the features of a CENTRE OF ORIGIN PATHOGEN?
A
- Both mating types
- Sexually reproducing
- High level of diversity
- Host plants
- Co-evolution of plant and pathogen
4
Q
What are the features of LOCATION OF INTRODUCED PATHOGEN?
A
- One mating type
- Asexual (clonal) reproduction
- Low level of diversity
- Susceptible plants
- Low level of plant resistance
5
Q
What are the two lineages of P.infestans?
A
- HERB-1
- US-1
6
Q
Where are resistance genes likely to be found for plant diseases?
A
In native hosts
