''Cytospora'' is a
genus of
ascomycete
Ascomycota is a phylum of the kingdom Fungi that, together with the Basidiomycota, forms the subkingdom Dikarya. Its members are commonly known as the sac fungi or ascomycetes. It is the largest phylum of Fungi, with over 64,000 species. The defi ...
fungi. The genus was first described in 1818 by
Christian Gottfried Ehrenberg.
[Ehrenberg, C.G. (1818]
''Sylvae mycologicae Berolinenses''
40 as ''Cytispora'' ''Cytospora'' species are known as
plant pathogens
Plant pathology (also phytopathology) is the scientific study of diseases in plants caused by pathogens (infectious organisms) and environmental conditions (physiological factors). Organisms that cause infectious disease include fungi, oomyc ...
.
Pathology
''Cytospora''
canker
A plant canker is a small area of dead tissue, which grows slowly, often over years. Some cankers are of only minor consequence, but others are ultimately lethal and therefore can have major economic implications for agriculture and horticultur ...
was observed by
G. B. Ouellette[Ouellette, G.B.; Conway, J.M.; Bard, G. 1965. Fréquence et intensité du chancre cytosporéen dans les plantations d’épinette du Québec. For. Chron. 41(4):444–453.] in all the plantations of
white and
Norway spruce
''Picea abies'', the Norway spruce or European spruce, is a species of spruce native to Northern, Central and Eastern Europe.
It has branchlets that typically hang downwards, and the largest cones of any spruce, 9–17 cm long. It is very close ...
s examined in the Province of
Quebec, as well as in some natural stands of indigenous spruce. Disease incidence was particularly high in the
Grand-Mère and
Saint-Lazare plantations where it had been present since at least 1943 and 1955, respectively. Periods favourable to infection had occurred at fairly regular intervals, and the aggressiveness of canker development varied year by year. Rainfall, temperature, and disease intensity were not clearly correlated.
References
External links
Index Fungorum*
Fungal plant pathogens and diseases
Diaporthales
Sordariomycetes genera
Taxa named by Christian Gottfried Ehrenberg
{{fungus-plant-disease-stub