Canadian Forest Service Publications
Characterization of Canadian and European Melanconium from some Alnus species by morphological, cultural and biochemical studies. 1991. Sieber, T.N.; Sieber-Canavesi, F.; Petrini, O.; Ekramoddoullah, A.K.M.; Dorworth, C.E. Canadian Journal of Botany 69: 2170-2176.
Issued by: Pacific Forestry Centre
Catalog ID: 3133
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Melanconium apiocarpum (anamorph of Melanconis alni), Melanconium marginale (anamorph of Melanconis marginalis), and other Melanconium species isolated from healthy and diseased tissues of Alnus species in Canada, England, and Switzerland were compared by means of morphological, cultural, and biochemical techniques, and the results were analyzed by numerical methods. No differences were recorded between symptomless endophytes and disease syndrome associated isolates of M. apiocarpum, although European and Canadian isolates could be consistently and clearly differentiated by protein profiles and cellulose utilization patterns. On the basis of cultural and biochemical characters as well as conidia morphology, M. apiocarpum and M. marginale are distinct species. Two intraspecific groups of M. marginale, particular to separate Alnus species, were identified. Melanconium isolates from Fagus sylvatica and Quercus robur are clearly distinct from those on Alnus.