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Mycosphaerella species occurring on Eucalyptus globulus in Portugal

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Abstract

Mycosphaerella leaf disease (MLD) is caused by species of Mycosphaerella and several anamorphic form genera that have been connected to Mycosphaerella. Until recently, MLD of eucalypts was largely ignored in Portugal. However, serious damage to Eucalyptus globulus has been reported since 1999 when frequent and severe defoliation of young trees was observed. The severity of this disease prompted a preliminary study of the Mycosphaerella species associated with major symptoms of a leaf blotch disease in commercial plantations of E. globulus in Portugal, which is presented here. The species were identified by molecular methods based on the ITS1-5.8S-ITS2 cluster, together with morphological characters. In addition to confirming the species previously recorded, Mycosphaerella vespa is reported for the first time from Portugal, while the status of Mycosphaerella grandis remains to be resolved.

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Acknowledgements

The biological material would not have been available without direct collaboration with Carlos Valente (Instituto RAIZ) and Lucinda Neves (Silvicaima) and their teams, who provided infected material. Experimental plantations were supported by programme AGRO 8.1, Project 550, ‘Pest management on pine and eucalypts stands minimising environmental impacts and conserving biodiversity’.

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Authors and Affiliations

  1. Instituto Nacional dos Recursos Biológicos, Edifício da ex-Estação Florestal Nacional, Quinta do Marquês, 2780-159, Oeiras, Portugal

    Márcia Silva & Helena Machado

  2. Centro de Recursos Microbiológicos, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516, Caparica, Portugal

    Alan J. L. Phillips

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  1. Márcia Silva
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  2. Helena Machado
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  3. Alan J. L. Phillips
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Correspondence to Márcia Silva.

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Silva, M., Machado, H. & Phillips, A.J.L. Mycosphaerella species occurring on Eucalyptus globulus in Portugal. Eur J Plant Pathol 125, 425–433 (2009). https://doi.org/10.1007/s10658-009-9491-6

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  • DOI: https://doi.org/10.1007/s10658-009-9491-6

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