01951nas a2200265 4500008004100000245007000041210006900111260001200180300001400192490000800206520117200214653001801386653002001404653002001424653001401444653002101458653001801479653002701497653002201524653001801546100002101564700002501585700002001610856005501630 2003 eng d00aSusceptibility of some mesophilic hardwoods to alder Phytophthora0 aSusceptibility of some mesophilic hardwoods to alder Phytophthor c08/2003 a406–4100 v1513 a
Abstract Inoculation tests were carried out in the greenhouse on seedlings of five hardwoods (Alnus cordata, A. glutinosa, Castanea sativa, Juglans regia and Quercus robur) to determine their susceptibility to an isolate of alder Phytophthora obtained in Italy from A. cordata. A Phytophthora cinnamomi strain was used for comparison. Host susceptibility to infection was determined as the lesion length after stem inoculation and the percentage of necrotized rootlets after soil infestation with inoculated millet seeds. The aggressiveness of the alder Phytophthora isolate was significantly higher in the two Alnus species than in the other hosts. Our results were confirmed with both methods of inoculation. Alnus cordata was consistently the most susceptible host species when compared with the other hardwoods. Damage by P. cinnamomi was severe, particularly after soil infestation tests. The most susceptible species were alders, chestnut and walnut. The test also suggests that alder Phytophthora is able to spread through infected seedlings of different hardwood species.
10aAlnus cordata10aAlnus glutinosa10aCastanea sativa10aHardwoods10ainoculation test10aJuglans regia10aPhytophthora cinnamomi10aPhytophthora spp.10aQuercus robur1 aSantini, Alberto1 aBarzanti, Gian Paolo1 aCapretti, Paolo uhttp://dx.doi.org/10.1046/j.1439-0434.2003.00739.x