Introduced Diseases of Trees Flashcards
1
Q
What FUNGUS causes DUTCH ELM DISEASE?
A
Ophiostoma ulmi
2
Q
How is Dutch Elm Disease spread?
A
Bark Beetle
3
Q
Where is Dutch Elm Disease native to?
A
Asia
4
Q
What OOMYCETE causes SUDDEN OAK DEATH?
A
Phytophthora ramorum
5
Q
What are the symptoms of Sudden Oak Death?
A
- Bleeding cankers
- Shoot blight
6
Q
What was the source of SUDDEN OAK DEATH?
A
- US nurseries (California)
- NA1 lineage
7
Q
What are the THREE lineages of P.ramorum?
A
- NA1
- NA2
- EU1
8
Q
What are the main plants affected by P.ramorum in Ireland?
A
- Rhodedendrons (nurseries)
- Japanese Larch (wild)
9
Q
What FUNGI causes ASH DIEBACK?
A
Chalara fraxinea
(Hymenoscyphus fraxineus)
10
Q
What are the symptoms of ASH DIEBACK?
A
- Foliage wilt
- Shoot dieback
- Stem lesions
11
Q
Where does Hymenoscyphus fraxineus begin its lifecycle?
A
Fungal growth in leaf litter
