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Ultrastructure of the rust fungus Peridermium pini (Pers.) Lev.

Walles, Björn (1974). Ultrastructure of the rust fungus Peridermium pini (Pers.) Lev. Technical Report. Stockholm: Predecessors to SLU > Royal School of Forestry, Sveriges lantbruksuniversitet. Studia forestalia Suecica ; 122

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Peridermium pini growing in the green, parenchymatous cortex of a young tree of pine (Pinus sylvestris) has been studied by electron microscopy. The extensively branched septate hyphae are spread in the intercellular spaces and in the middle part of walls separating contiguous host cells. The hyphal cells are uninucleate. The septa are simple and perforate. The septal pore is occluded by a Woronin body. This organization of the septum is similar to that of some Ascomycetes, as is the occurrence of a centriolar plaque on the nucleaer envelope. P. pini has in addition a structural configuration characteristic for rust fungi, namely an approximately hemispherical pore apparatus bordered by a layer of microbodies. The sac-like haustorium is separated from its extracellular mother cell by a cross-wall, situated in the short neck region. At the place of penetration, the host wall forms a papilla-shaped collar. Almost one third of the haustoria observed becomes encased by an extensively proliferating collar. A few per cent of the haustoria become necrotic after having entered host cells. The attacked parenchyma cells, which may each contain several haustoria, have generally an affected plasmalemma and more or less degenerated chloroplasts.

Authors/Creators:Walles, Björn
Title:Ultrastructure of the rust fungus Peridermium pini (Pers.) Lev.
Series Name/Journal:Studia forestalia Suecica
Year of publishing :1974
Number of Pages:30
Place of Publication:Stockholm
ISBN for printed version:91-38-02145-5
Publication Type:Report
Full Text Status:Public
Subjects:Obsolete subject words > FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING > Plant production > Plant and forest protection
Keywords:fungus, Peridermium pini, conifers, Pinus sylvestris
Permanent URL:
ID Code:5667
Department:Predecessors to SLU > Royal School of Forestry
Deposited By: Skogsbiblioteket Umeå
Deposited On:07 Feb 2011 00:00
Metadata Last Modified:13 Nov 2015 14:00

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