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Phytophthora plurivora and other Phytophthora species are known to be serious pathogens of forest trees. Little is known, however, about the presence of P. plurivora in Polish oak forests and their role in oak decline. The aims of this study were to identify P. plurivora in healthy and declining Quercus robur stands in southern Poland and to demonstrate the relationship between different site factors...
The ophiostomatoid fungi associated with cerambycid beetles Tetropium spp. (their symbiotic vectors) colonizing Norway spruce in Poland (six species collected) were isolated. The virulence of representative isolates was evaluated through inoculations using 2-year-old Norway spruce seedlings. A total of 1325 isolates (Ophiostoma piceae, O. tetropii, O. minus, Grosmannia piceiperda, G. cucullata, and...
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