Fungal Slides from Various Sources

I. Fungi and Arthropods:  Some fungi from complex associations with arthropods.
    These may be parasitic, mutualistic, or often spore dispersal related.

  1. Section through the basidioma of the polypore Ganoderma
        The pores, some of which are filled with basidiospores, are seen in
        longitudinal section. The large hole was made by a ciid beetle which
        lays its eggs in the polypore. (M. Blackwell)

  2. Antennopsis: a minute conidial fungus known only on termites (SEM)
        (M. Blackwell)

  3. Septobasidium: a basidiomycete, parasitizes a few aphids while providing
      a home for most of the colony
        (M. Blackwell)

  4. Laboulbenia on a legionary ant, Eciton
        The many species of Laboulbeniales are obligate parasites of insects, mites,
        and a few millipedes. (M. Blackwell)

  5. Pyxidiophora perithecia, one of which (in the center) has exuded the
      ascospores of a single ascus
        (M. Blackwell)

  6.  Pyxyidiophora perithecia
        Higher magnification of a perthecium of with ascospores visible at the base
        of the perithicium. (M. Blackwell)

  7. Pyxidiophora ascospores
        Ascospores of Pyxidiophora species develop a dark holdfast region which
        attaches to mites and insets. The dark spots on the mite are the holdfasts.
        (M. Blackwell)

  8. Anamorphs of Pyxidiophora
        Anamorphs of Pyxidiophora developed directly from ascospores on mite
        ventral surface. Notice dark holdfasts and beginning of conidium
        production. (M. Blackwell)
 

II. Chytridiomycetes

10. Synchytriumpapillatum infection induces production of a red pigment
      by the desert plant Erodiumcicutarium.
        (R.L. Gilbertson)

11. Rhizophidium on pine pollen
        (R.L. Gilbertson)

12. Phlyctochytrium rhizomycelium
        (M. Blackwell)

13. Phlyctochytrium zoospores within a zoosporangium
        (M. Blackwell)

14. Gametangia of Allomyces
        The larger female gametes are being released from one female gametangium;
        the male gametangia are terminal in this species. (M. Blackwell)

15. Resting sporangium of Allomyces
        Showing the pitted pigmented cell wall. (M. Blackwell)
 

III. Ascomycetes

16. Developing asci of Balansia epichloe, an endophyte of grasses
        Ascongonial hyphae with crozirs are visible. Giemsa stain showing nuclei
        in deep blue. (J.P. Jones)

17. Young ascus with four of eight ascospores visible in the section (TEM)
        (C.W. Mims)

18. Ascus slightly older than slide 17. Note thicker ascospore walls (TEM)
        (C.W. Mims)

19. Ascus with mature ascospores with ornamental walls (TEM)
        (C.W. Mims)

20. Immature tailed ascospores in an ascus (Echinopodospora)
        (J.P. Jones)

21. Muriform ascospores at tip of "Jack-in-the-box" ascus (Leptosphaerulina)
        (M. Blackwell)

22. Sordaria crossover experiment
        Results of an experiment on meiotic crossover using ascospore color as a
        genetic marker (Sordaria). (M. Blackwell)

23. Taphrina deformans
        Showing early stages of infection of peach leaves; the disease is call peach
        leaf curl and the symptoms are brought about partly by fungus production
        of plant growth regulators. (J.P. Jones)

24. Cleistothecia of a powdery mildew of lilac leaves
        The fungus reproduces asexually until late summer when it forms
        appendaged ascomata. (M. Blackwell)

25. Crushed cleistothecium (as in slide 24)
        Asci containing four ascospore have been released. (M. Blackwell)

26. Stromata with pertithecia of the fungal endophyte Atkinsonelli on the grass Danthonia
        Endophytes grow between the plant cells, and some convey insect resistance to the
        plants. (J.P. Jones)

27. Tuber, a truffle that grows in an obligate association with some tree species
        These ascomata are derived apothecia of the hypogenan fungus. Cut ascomata
        show the convoluted hymenial area. (J.P. Jones)

28. The Cylindrocarpon asexual stage of Calonectria showing nuclei
        ( J.P. Jones)

29. Helicosporium is names for its coiled conidia
        (J.P. Jones)

30. Mycelium and developing conidiophores of Aspergillus nidulans (SEM)
        (C.W. Mims)

31. Nematode trapped by a conidium-producing mycelium
        The nematode is held by fungus nooses and eventually digested. The fungus
        thus supplements its nitrogen supply. (E. McGawley)
 

IV. Basidiomycetes

32. Mycelium of a wood decaying basidiomycete
        Notice the droplets of exudate produced by the mycelium. This mycelium
        also produces extracellular enzymes that help to digest the cell walls of the
        wood. (M. Blackwell)

33. Dolipore septum
        An elaborate septal pore structure, the dolipore septum, is characteristic of
        the mycelium of most basidiomycetes. (C.W. Mims)

34. Developing basidia and basidiospores
        This type of sexual reproduction is the hallmark of the basidiomycetes.
        (C.W. Mims)

35. Amanita muscaria mushrooming through soil beneath a pine tree
        These ectomycorrhizal fungi are also known for producing hallucinogenic
        compounds.

36. Ectomycorrhizae formed by a basidiomycete and Helianthanum

37. Basidiome of the polypore, Laetiporus sulphureus
        This fungus decays living trees by selectively degrading cellulose from
        the wood cell walls and leaving behind brown lignin residue. This type
        of decay is known as brown rot. (M. Blackwell)

38. Inonotus dryadeus
        Inonotus dryadeus produces golden droplets that appear to have antibiotic
        activity against certain bacteria. This photograph was taken at night when
        slugs feed upon the basidiome tissue. Basidiospores are produced in pores
        on the underside of this root rot basidiomycete.

39. Rust life cycle
        In addition to the more familiar mushrooms and polypores, many other
        fungi produce basidia. One such group is the rust fungi that are parasites
        of plants. Rusts have complex life cycles, some involving two unrelated
        host plants and a variety of spore types besides basidiospores, as shown
        in the diagram. (C.W. Mims)

40. Urediniospores of a rust (SEM)
        (C.W. Mims)

41. Mass of rust teliospores (SEM)
        (C.W. Mims)

42. Higher magnification of rust teliospores in slide 41 (SEM)
        (C.W. Mims)

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