Mycoparasitism by Three Species of Diplococcium (Hyphomycetes)

Abstract

The interactions between three species of Diplococcium and their respective host fungi were investigated using light and transmission electron microscopy. Two types of interactions were detected: D. clarkii and D. clavariarum, colonizing fruit bodies of basidiomycetes, produce appressoria with protrusions into the cell walls of the host fungi. The host reacts by apposition of secondary wall-like material at the site of the interaction. Hyphae of D. parcum, a species reported from wood and bark, were encircled by hyphae of another fungus, probably belonging to a species of Tulasnella. Since D. parcum could not be cultivated in pure culture, this association between both fungi indicates that D. parcum was parasitic on hyphae of the presumed Tulasnella species.

Key words

Ascomycetes - Helminthosphaeria - heterobasidiomycetes - Taiwan - ultrastructure

References

• 01 Barnett,  H. L., and Lilly,  V. G.. (1962);  A destructive mycoparasite, Gliocladium roseum. .  Mycologia. 54 72-77
• 02 Bauer,  R., and Oberwinkler,  F.. (1990);  Direct cytoplasm-cytoplasm connection: an unusual host-parasite interaction of the tremelloid mycoparasite Tetragoniomyces uliginosus. .  Protoplasma. 154 157-160
• 03 Bauer,  R., and Oberwinkler,  F.. (1991);  The colacosomes: New structures at the host-parasite interface of a mycoparasitic basidiomycete.  Bot. Acta. 104 53-57
• 04 Breitenbach,  J., and Kränzlin,  F.. (1986) Pilze der Schweiz. Band 2. Nichtblätterpilze. Luzern; Verlag Mykologia p. 352
• 05 Ellis,  M. B.. (1971) Dematiaceous Hyphomycetes. Kew; CMI p. 397
• 06 Goh,  T. K., and Hyde,  K. D.. (1998);  A synopsis of and a key to Diplococcium species based on the literature, with a description of a new species.  Fungal Diversity. 1 65-83
• 07 Goh,  T. K.,, Hyde,  K. D.,, and Umali,  T. E.. (1998);  Two new species of Diplococcium from the tropics.  Mycologia. 90 514-517
• 08 Hoch,  H. C.. (1978);  Mycoparasitic relationships. IV. Stephanoma phaeospora parasitic on a species of Fusarium. .  Mycologia. 70 370-379
• 09 Holubová-Jechová,  V.. (1982);  Lignicolous Hyphomycetes from Czechoslovakia 6. Spadicoides and Diplococcium. .  Folia Geobot. Phytotax.. 17 295-327
• 10 Kreger-Van Rij,  N. J. W., and Veenhuis,  M.. (1973);  Electron microscopy of some special cell contacts in yeasts.  J. Bacteriol.. 113 350-356
• 11 Lachance,  M.-A., and Pang,  W.-M.. (1997);  Predacious yeasts.  Yeast. 13 225-232
• 12 Matsushima,  T.. (1993) Matsushima Mycological Memoirs No. 7. Kobe; published by the author p. 49
• 13 Réblová,  M.. (1999);  Teleomorph-anamorph connections in Ascomycetes. 3. Three new lignicolous species of Helminthosphaeria. .  Sydowia. 51 223-244
• 14 Reynolds,  E. S.. (1963);  The use of lead citrate at high pH as an electron-opaque stain in electron microscopy.  J. Cell Biol.. 17 208-212
• 15 Samuels,  G. J.,, Candoussau,  F.,, and Magni,  J.-F.. (1997);  Fungicolous pyrenomycetes. 1. Helminthosphaeria and the new family Helminthosphaeriaceae.  Mycologia. 89 141-155
• 16 Sinclair,  R. C.,, Eicker,  A.,, and Bhat,  D. J.. (1985);  Branching in Spadicoides. .  Trans. Br. Mycol. Soc.. 85 736-737
• 17 Spurr,  A. R.. (1969);  A low-viscosity epoxy resin embedding medium for electron microscopy.  J. Ultrastruct. Res.. 26 31-34
• 18 Wang,  C. J. K., and Sutton,  B. C.. (1998);  Diplococcium hughesii sp. nov. with a Selenosporella synanamorph.  Can. J. Bot.. 76 1608-1613
• 19 Zugmaier,  W.,, Bauer,  R.,, and Oberwinkler,  F.. (1994);  Mycoparasitism of some Tremella species.  Mycologia. 86 49-56

Section Editor: H. M. Jahns