Fungi associated with pathologies on cuban eucalyptus plantations
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Abstract
In Cuba, eucalyptus are considered as one of the most important forest species. Because of it rapid and high biomass production, it is suitable for a wide range of uses. During last years, areas dedicated to their cultivation are increasing within the country. Despite this there are few records of the incidence of phytopathogenic fungi on Cuban plantations of eucaliptus. The aim of this work was to identify fungal species associated to pathologies present in these plantations. Plantations of E. saligna in Pinar del Río, E. grandis in Santiago de Cuba and Eucalyptus sp.in Ciego de Ávila were sampled. Samples of stems, branches and leafs with different symptomatologies were collected, disinfected with sodium hypochlorite (NaOCL, 1-3 %), and placed in humid chambers. For fungal isolation, sections of disinfected symptomatic tissues were placed in Water Agar (2 %) and Potato Dextrose Agar plates supplemented with streptomycin sulphate (100 µg/mL). From the different pathologies ten fungal species were identified. On stems with canker symptoms Acremonium sp., Crysoporthe cubensis, Graphium sp. and Lasiodiplodia theobromae were detected; on branch with canker or blight Cryptosporiopsis eucalypti, L. theobromae and Pestalotiopsis guepinii were identified. While Coniella fragariae, Cryptosporiopsis eucalypti, Kirramyces epicoccoides, Pestalotiopsis disseminata and Phomopsis eucalypti were associated with foliar spots.
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