A Study on the Mode of Infection of Pinus sylvestris L. by Peridermium pint (Pers.) Lev. |
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| Authors: | OLEMBO TITUS W |
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| Institution: | Department of Forestry University of Aberdeen, Scotland |
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| Abstract: | Inoculations by Peridermium pini (Pers) Lev. aeciospores ofscalpel wounds 2 mm deep on current year's Pinus sylvestrisL. shoots gave more numerous infections than shallower wounds.Some lesions resulting from these infections developed pycnidialdroplets and a few also produced aecial blisters within thefirst year after infection. Infection of P. sylvestris by P.pini can take place by direct stomatal penetration. This wasobserved only inside the needle sheaths of trees with previousnatural infections and was not observed on healthy trees. Thehyphae that developed from these penetrations passed intercellularlythrough the mesophyll to the vascular tissue where they proliferated. |
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