Saturday, October 4, 2008

Fungi Division

Many species of fungi reproduce asexually such as the aquatic fungus Hesseltina vesiculosa specialized hyphae, or elongated filaments, that bear reproductive structures called sporagia, spheres in which the spores are produced.'

Division Muxomycota
The organisms in this division grow as multinucleate amoeboid plasmodia and produce motile uninucleate amoebas as well as biflagellate cells.

Members of the class Plasmodiophoromycetes of this division parasitize the roots of plants, and some species may infect the hyphae of aquatic fungi. Plasmodiophora brassicae causes a diseases of cabbages called clubroot.

The class Myxomycetes comprises the true, free-living plasmodial slime molds, which range from microscopic species to those which produce very large and conspicuous plasmodia. Starvation induces the plasmodia to convert to sprorangia, in which nonmotile spores form. They typically grow under moist conditions in or decaying wood or vegetation.

Division Eumucota
The so-called true fungi are placed in this division. There are five subdivisions
  1. Mastigomycotina
  2. Zygomycotina
  3. Ascomycotina
  4. Basidiomycotina
  5. Deutermycotina
Each of those fungi division will discussed more detail in the next articles.

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