UNIDAD ASOCIADA "SISTEMAS AGROFORESTALES": ESTACIÓN FITOPATOLÓXICA DO AREEIRO - MISIÓN BIOLÓGICA DE GALICIA
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UNIDAD ASOCIADA "SISTEMAS AGROFORESTALES": ESTACIÓN FITOPATOLÓXICA DO AREEIRO - MISIÓN BIOLÓGICA DE GALICIA |
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| Home » Publications » Papers » 2008 |
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I Simposio
Iberoamericano – IV Jornadas Ibéricas de Horticultura
Ornamental Pontevedra, 15-17 October 2008
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| Especies del género Armillaria identificadas en plantas leñosas ornamentales en Galicia O. Aguín¹, P. Escofet¹, M.J. Sainz² y J.P. Mansilla¹ ¹Estación Fitopatolóxica do Areeiro, Deputación de Pontevedra, Subida a la Robleda s/n, 36153 Pontevedra, España. oaguin@efa-dip.org ²Departamento de Producción Vegetal, Universidad de Santiago de Compostela, 27002 Lugo, España. mjsainz@efa-dip.org |
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ABSTRACT:Pathogenic species of the genus Armillaria cause white root rot in several woody species. In the present work, Armillaria species affecting a wide range of woody ornamentals in Galicia (north-western Spain) were identified. Fungal diagnosis was done from symptomatic root and collar root samples by PCR/RFLP or from soil surrounding the roots using nested-PCR/RFLP. Armillaria species were identified by sequencing DNA fungal fragments. Results showed that the species more frequently found causing white root rot in Galicia was A. mellea, being detected in 74% of the plant samples and in 92% of soil samples. In a lower rate, A. gallica was identified in 23% of plant samples and 6% of soil samples. A single root sample was affected by A. cepistipes. Armillaria mellea was detected in 46 ornamental species cultivated in Galicia, which points out the polyphagous character of the pathogen. Key words: root rot, diagnosis, molecular techniques |
