Journal of Plant Pathology (2007) 89, p. S33 (Boncaldo et al.)

E. Boncaldo, G. Sicoli, F. Mannerucci and N. Luisi (2007)
Fungal endophytic communities detected in deciduous oak trees from southern Italy
Journal of Plant Pathology 89 (3, Suppl.), S33-S33
Poster Presentation at S.I.Pa.V XIV National Meeting - Perugia, Italy 19-21 Sept. 2007
Abstract: In four oak woods located in different regions of southern Italy, a study was carried out focusing on the composition and seasonal variation of fungal endophytic communities inhabiting epigeous tissues of healthy and declining trees of Quercus pubescens Willd. and Q. cerris L. In total, 17 fungal taxa were detected including potentially pathogenic organisms, many of which were agents of bark necrosis, as well as indifferent or probable antagonists. The most common pathogen was Discula quercina (West) von Arx, that has an isolation frequency (IF) of 10.7% and occurred in both oak species, more specifically in buds, followed by Biscogniauxia mediterranea (De Not.) O. Kuntze (IF = 5.4%), which was prevalent in leaves and bark, and Diplodia corticola A.J.L. Phillips, Alves et Luque (IF = 4.3%). Lower values of IF were shown by Phomopsis quercina (Sacc.) Hohn and species in the genera Cytospora and Phoma. Aureobasidium pullulans (de Bary) G. Arnaud (IF = 25%) was the most common nonpathogenic fungus, isolated primarily from the leaves. By comparing IF values from spring to autumn, most fungal species seemed to prefer autumn as the most suitable season for host tissue colonization.

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
surveys/sampling/distribution

---

Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Aureobasidium pullulans	Oak (Quercus)	Italy
	Apiognomonia errabunda	Oak (Quercus)	Italy
	Biscogniauxia mediterranea	Oak (Quercus)	Italy
	Phomopsis quercina	Oak (Quercus)	Italy
	Diplodia corticola	Oak (Quercus)	Italy