Abstract
Phytopathogenic effect ofGeosmithia pallida, G. langdonii, Ophiostoma grandicarpum, O. querci, two isolates ofO. piceae, and two isolates ofFusarium solani was compared using plant growth test (stem and root length of garden cress plants seeded on mycelium-covered potato carrot agar);Ophiostoma spp. andF. solani were isolated from oak,Geosmithia spp. from galleries ofScolytus intricatus on beech. All fungi inhibited more the root elongation than that of stems.F. solani led to plant collapse after briefly stimulating the growth of stem and in one case also root.G. langdonii inhibited stem and root growth to 20 % and led to plant collapse.G. pallida inhibited root growth to 25 % whereas stem growth was almost unimpaired.Ophiostoma spp. reduced stem growth to ∼60–80 % and root growth to 25–60 %O. piceae andO. querci caused plant collapse after 15–20 d.
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The study was supported by theGrant Agency of the Czech Republic (projects no. 203/00/0219 and 522/02/1206), theInstitutional Research Concept no. AV 0Z 502 0903, and theMinistry of Education, Youth and Sports of the Czech Republic (MSM 021 620 828).
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Čížková, D., Šrůtka, P., Kolařík, M. et al. Assessing the pathogenic effect ofFusarium, Geosmithia andOphiostoma fungi from broad-leaved trees. Folia Microbiol 50, 59–62 (2005). https://doi.org/10.1007/BF02931294
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DOI: https://doi.org/10.1007/BF02931294