01646nas a2200205 4500008004100000022001400041245010400055210006900159260002900228300001400257490000700271520099400278100001701272700001501289700001901304700001801323700002601341700001801367856005501385 2012 eng d a1439-032900aSusceptibility to Phytophthora cinnamomi of the commonest morphotypes of Holm oak in southern Spain0 aSusceptibility to Phytophthora cinnamomi of the commonest morpho bBlackwell Publishing Ltd a345–3470 v423 a

The four main morphotypes of Holm oak (Quercus ilex subsp. ballota) present in Andalusia (expansa, macrocarpa, microcarpa and rotundifolia) were infected with Phytophthora cinnamomi to determine their susceptibility to the root pathogen. No large differences were found among the four morphotypes in the infection of roots, which always showed a high degree of necrosis. However, the different responses of the foliage to infection separated the four morphotypes of Holm oak into three groups: very susceptible (microcarpa), susceptible (expansa) and moderately susceptible (rotundifolia and macrocarpa). The natural hybrid Q.ilex ballota-Q.faginea exhibited a low level of root and foliar symptoms when infected with P.cinnamomi. Quercus faginea could be considered as a source of resistance to P.cinnamomi in future breeding programmes.

1 aSerrano, M S1 aDe Vita, P1 aCarbonero, M D1 aFernández, F1 aFernández-Rebollo, P1 aSánchez, M E uhttp://dx.doi.org/10.1111/j.1439-0329.2011.00758.x