We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
SEVERE OUTBREAK OF FUSARIUM SOLANI ON QUERCUS ILEX VECTORED BY XYLOSANDRUS COMPACTUS.
- Authors
Bosso, L.; Senatore, M.; Varlese, R.; Ruocco, M.; Garonna, A. P.; Bonanomi, G.; Mazzoleni, S.; Cristinzio, G.
- Abstract
The black twig borer Xylosandrus compactus (Eichhoff) (Coleoptera: Scolytinae) causes severe damages to its hosts (Chong et al., 2011) because it also vectors Fusarium solani, which induces wilting of twigs and terminal branches (Ngoan et al., 1976). In two urban parks in Naples and Portici (southern Italy) an evident flagging of the leaves of holm oak (Quercus ilex) was observed, followed by a rapid wilting of shoots and twigs of saplings and mature trees (Garonna et al., 2012). A fungus isolated from the beetle's reproductive galleries, entry holes and the adjacent black-stained woody tissues, was grown on potato dextrose agar (PDA) at 25°C, and identified by sequencing the ITS 1-4 region of rDNA. The sequence showed 99% identity with that of Fusarium solani from GenBank (accession No. EU719658.1). In pathogenicity tests, holm oak branches were inoculated with a 2-mm PDA dish collected from a 7-day-old culture of the F. solani isolate (FS1). Control branches were inoculated with plugs of sterile PDA. All branches were incubated at 25±1°C. After five days, symptoms resembling those exhibited by naturally infected plants developed only on the branches inoculated with FS1, from whose tissues this fungus was re-isolated, thus proving to be a Q. ilex pathogen. Symptoms recalling those observed in the two sites surveyed are spreading through the holm oak woodlands of Campania (southern Italy), so the geographical distribution of the outbreak may already be considerable. To the best of our knowledge this represents the first European record of a severe outbreak of F. solani on Q. ilex following a massive attack by X. compactus.
- Subjects
ITALY; FUSARIUM solani; BEETLES; BORERS (Insects); HOST plants; HOLM oak; OAK diseases &; pests
- Publication
Journal of Plant Pathology, 2012, Vol 94, Issue 4, pS4.99
- ISSN
1125-4653
- Publication type
Article