Canadian Forest Service Publications

Fine morphology of fungal structures involved in host wall alteration. 1994. Nicole, M.; Ruel, K.; Ouellette, G.B. Pages 13-30 in O. Petrini and G.B. Ouellette, editors. Host Wall Alterations by Parasitic Fungi. APS Press, St. Paul, Minnesota.

Year: 1994

Issued by: Laurentian Forestry Centre

Catalog ID: 21166

Language: English

Availability: PDF (request by e-mail)

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Abstract

Alteration of host cell walls (HCW) by fungi is probably a key event in pathogenesis, by which pathogens penetrate plant cell walls and secrete specific wall-degrading enzymes. Numerous biochemical, histological, and cytochemical studies of host-fungi interface have revealed that pathogenic fungi produce a wide range of penetrating structures before plant infection and HCW degradation.

This review focuses on fungal structures associated with HCW penetration and degradation in different plant-fungus associations. Particular attention will be given to the morphology and roles played by extracellular fungal sheats in cell wall alteration and penetration. Unusual structures that may contribute to HCW degradation will also be discussed.