Cytospora is a genus of Ascomycota fungi. The genus was first described in 1818 by Christian Gottfried Ehrenberg.[Ehrenberg, C.G. (1818), Sylvae mycologicae Berolinenses, 540, as Cytispora] Cytospora species are known as Plant pathology.
Pathology
Cytospora canker 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 spruce and
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.
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