Canadian Forest Service Publications

Taxonomy of the genus Gremmeniella, causal agent of scleroderris canker. 2001. Laflamme, G. Pages 30-34 in A. Uotila and V. Ahola, editors. Shoot and Foliage Diseases, Proceedings: International Union of Forestry Research Organizations (IUFRO). June, 17-22, 2001, Hyytiälä, Finland.

Year: 2001

Available from: Laurentian Forestry Centre

Catalog ID: 39445

Language: English

CFS Availability: PDF (request by e-mail)


The conifer disease known as Scleroderris canker is caused by ascomycetes of the genus Gremmeniella. The taxonomy of these pathogens has undergone many changes from the rank of order down to the rank of species, since the first description of the teleomorph in Sweden under the name Crumenula abietina Lagerberg, in 1913. A second species found in Switzerland on larch, C. laricina Ettlinger, was described in 1945. In 1975, three serovars of races were recognized for the species G. abietina. In 1989, a reassessment of the genus was made based on results of morphological, cultural and biochemical studies. Thus, in addition to the var. abietina, representing the three serovars, the var. balsamea was proposed for the pathogen infecting spruce and balsam fir in Canada. New information on the epidemiology of these fungi infecting different hosts, in combination with results of sequencing the isolates representative of the host range of the disease, provides a better understanding of this disease on its respective hosts. A review of the genus Gremmeniella is presented, including a proposal for several new species.



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