Resumo

ELOY, Madalena  e  CRUZ, Leonor. A new bacterial disease of carnation in Portugal caused by Burkholderia andropogonis. Rev. de Ciências Agrárias [online]. 2008, vol.31, n.2, pp.89-95. ISSN 0871-018X.

The occurrence of a leaf spot disease of carnation caused by Burkholderia andropogonis is recorded for the first time in Portugal. Symptoms consisted of ‘eyespot’ lesions on all aerial plant parts, often bordered by water-soaked halos on the leaves. As the disease progressed lesions became dark brown and affected areas dried out. Phenotypic studies and Polymerase Chain Reaction using specific primers Pf/Pr targeted to 16S rDNA of B. andropogonis were used to identify the pathogen. Pathogenicity tests on china pink plants, re-isolation of the pathogen from inoculated plants and further PCR testing confirmed the identification of the bacterium. Infected plants came from an open air nursery and the whole production was destroyed to avoid dissemination of the pathogen.

Palavras-chave : Leaf spot of carnation; Dianthus caryophyllus; first record.

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