Golden Canker, Pagoda Dogwood Decline

Cryptodiaporthe corni

Golden canker (officially Cryptodiaporthe canker) is a visually distinct and increasingly common disease of alternate-leafed dogwoods such as pagoda dogwood. This disease can potentially be lethal if infections occur on the main trunk of a tree.

Initial symptoms of golden canker include wilting and death of leaves on infected branches, followed by branch dieback. Infected branch tissue turns a bright, golden-yellow color. Oftentimes orange spots will be visible scattered over this yellow tissue. These spots are fruiting bodies (reproductive structures) of the fungus that causes the disease. If unchecked, golden canker can spread from infected branches to the main trunk, resulting in the death of the tree above the point of trunk infection.
Cryptodiaporthe corni (Golden Canker) Cryptodiaporthe corni (Golden Canker) early stages of disease infecting the trunk of a Pagoda Dogwood (Cornus alternifolia) Cornus alternifolia,Cryptodiaporthe corni,Geotagged,Golden Canker,Pagoda Dogwood,Pagoda Dogwood Decline,Spring,United States

Naming

Cryptodiaporthe corni (Wehm.) Petr., Annales Mycologici 39 (4-6): 302 (1941)
Apioporthe corni Wehm., The genus Diaporthe Nitschke and its segregates: 220 (1923)
Hapalocystis corni (Wehm.) M.E. Barr, Mycotaxon 10 (1): 214 (1979)
Aurantioporthe corni (Wehm.) G. Beier & Blanchette, Aurantioporthe corni gen. et comb. nov., an endophyte and pathogen of Cornus alternifolia 107 (1): 71 (2015)
Cryptodiaporthe corni (Golden Canker) Cryptodiaporthe corni (Golden Canker) early stages of disease infecting the trunk of a Pagoda Dogwood (Cornus alternifolia) Cornus alternifolia,Cryptodiaporthe corni,Geotagged,Golden Canker,Pagoda Dogwood,Pagoda Dogwood Decline,Spring,United States

Distribution

Throughout the range of Pagoda dogwood (Cornus alternifolia)

References:

Some text fragments are auto parsed from Wikipedia.

https://hort.extension.wisc.edu/articles/golden-canker-cryptodiaporthe-canker/
http://www.mycobank.org/name/Cryptodiaporthe%20corni&Lang=Eng
https://en.wikipedia.org/wiki/Cornus_alternifolia

Garrett Lee Beier (2013). Investigations on Cryptodiaporthe corni: a Pathogen of Pagoda Dogwood (Masters Thesis). https://conservancy.umn.edu/bitstream/handle/11299/163052/Beier_umn_0130M_13625.pdf?sequence=1&isAllowed=y
Taxonomy
KingdomFungi
DivisionAscomycota
ClassSordariomycetes
OrderDiaporthales
FamilyCryphonectriaceae
GenusCryptodiaporthe
SpeciesCryptodiaporthe corni