Response of endophytic Biscogniauxia mediterranea to variation in leaf water potential of Quercus cerris

VANNINI A.; LUCERO G.; ANSELMI N.; VETTRAINO A.M.

Forest Pathology

Blackwell Verlag

Lugar: Berling; Año: 2009 vol. 39 p. 8 - 14

1437-4781

Endophytic behaviour of B. mediterranea, the causal agent of charcoal disease of oak, was studied on Quercus cerris trees in a forest in Central Italy during two growing seasons. Isolation of the fungus from healthy tissues varied with tissue type, period of sampling and year. Presence of the fungus in asymptomatic tissues was significantly higher in the fall season compared to spring and summer. However a significant effect of tissue water content on presence of Biscogniauxia mediterranea was highlighted. The results suggest that Biscogniauxia mediterranea proliferation is favoured during its endophytic asymptomatic phase by the decrease of tree water potential..B. mediterranea, the causal agent of charcoal disease of oak, was studied on Quercus cerris trees in a forest in Central Italy during two growing seasons. Isolation of the fungus from healthy tissues varied with tissue type, period of sampling and year. Presence of the fungus in asymptomatic tissues was significantly higher in the fall season compared to spring and summer. However a significant effect of tissue water content on presence of Biscogniauxia mediterranea was highlighted. The results suggest that Biscogniauxia mediterranea proliferation is favoured during its endophytic asymptomatic phase by the decrease of tree water potential..Quercus cerris trees in a forest in Central Italy during two growing seasons. Isolation of the fungus from healthy tissues varied with tissue type, period of sampling and year. Presence of the fungus in asymptomatic tissues was significantly higher in the fall season compared to spring and summer. However a significant effect of tissue water content on presence of Biscogniauxia mediterranea was highlighted. The results suggest that Biscogniauxia mediterranea proliferation is favoured during its endophytic asymptomatic phase by the decrease of tree water potential..Biscogniauxia mediterranea was highlighted. The results suggest that Biscogniauxia mediterranea proliferation is favoured during its endophytic asymptomatic phase by the decrease of tree water potential..was highlighted. The results suggest that Biscogniauxia mediterranea proliferation is favoured during its endophytic asymptomatic phase by the decrease of tree water potential..