Outbreak of shoot blight and dieback of Eucalyptus spp., caused by Pseudoplagiostoma eucalypti in Brazil |
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| Authors: | Edival Ângelo Valverde Zauza Lúcio Mauro da Silva Guimarães Nilza de Lima Pereira Sales Samuel Alves dos Santos Rafael Ferreira Alfenas Acelino Couto Alfenas |
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| Institution: | 1. Suzano SA–Tecnologia Florestal, Itapetininga, São Paulo, Brazil;2. Universidade Federal de Minas Gerais – Campus Regional Montes Claros, Montes Claros, Minas Gerais, Brazil;3. Plant Health Program, Fiber R&D, Asia Pacific Resources International Ltd (APRIL), Pangkalan Kerinci, Indonesia;4. Laboratory of Forest Pathology, Department of Plant Pathology/Instituto de Biotecnologia Aplicada à Agropecuária, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil |
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| Abstract: | An outbreak of a new and severe disease was observed in Eucalyptus plantations of Bahia state, Brazil. An Ascomycota fungus has been frequently associated with the main symptoms of the disease namely leaf spot, branch cankers, shoot blight, defoliation, and dieback. Based on morphological characteristics, phylogenetic analysis (ITS and TEF-1α genes), and pathogenicity test on Eucalyptus plants, Pseudoplagiostoma eucalypti was identified as the causal agent of the disease. Although P. eucalytpi has been known from in Brazil since 1998, this is the first report of it causing severe disease and die-back on Eucalyptus spp. and we also record new symptoms associated with the pathogen. |
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| Keywords: | Cryptosporiopsis Eucalypt diseases leaf spot mini-cankers |
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