In this class we would look at the fungal union

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In this class, we would look at the fungal union concept, traditional and present day classification of fungi as adapted by me
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S/n Group Informal Group Kingdom Shared features 1 Cellular Slime Mould Amoebae aggregate to form pseudoplasmodium or slug which gives rise to fruit body Plasmodial Protozoa Trophic/vegetative phase lacks cell walls, ingest particulate food 2 Pasmodial Slime Mould amoeboid phase followed by multinucleate plasmodial phase e.g. protoplasmodium, phaneroplasmodium and aphanoplasmodium 3 Oomycetes, Zoospores biflagellate, produce oospore as sexual spore, cell wall is cellulose Zoosporic Chromista Trophic phase has cell wall of chitin, nutrition is absortive 4 Chytridiomycetes, Zoospores posteriorly uniflagellate, whiplash, walls made of chitin, sexual reproduction is planogametic. True Fungi 5 Zygomycetes, Sexually produce Zygospore Non-Zoopore forming 6 Ascomycetes, Produce different shapes of ascocarp containing asci with 4-8 ascospores 7 Basidiomycetes, produce basidiospores in basidium and include mushrooms, toadstools, rusts and smuts 8 Microsporic Fungi/Imperfect Fungi, No sexual reproduction, only produce asexual spores Table 1: Illustration of Fungal Groups that Composed the Fungi Union
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Kingdom Fungi/Mycota Eumycota Gymnomycota/ Myxomycota Acrasiomycetes Dictyosteliomycetes Myxomycetes Oomycetes/Straminipilomycetes Mastigomycotina Chytridiomycetes Amastigomycotina Labyrinthulomycetes Plasmodiophoromycetes Hypochytridiomycetes Zygomycetes Imperfect Fungi Basidiomycetes Ascomycetes Fig. 5: Illustration of traditional /ancient classification of members of the kingdom fungi. N.B – Fungal groups in red boundary have been reclassified.
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Chytridio- mycota Kingdom Fungi/Mycota Basidiom ycota Glomeromycota e.g. Mucoromycotina, Kickxellomycotina, Zoopagomycotina and Entomophthoromycotina Neocallim- astigomycota Ascomycota e.g. Hemiascomycommcetes , Plectomycetes, Pyrenomycetes, Loculoascomycetes, laboulbeniomycetes Fungi Imperfecti Blastocla- dioycota Fig. 6: Current classification system of the Kingdom fungi.
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Economic Importance of Fungi Fungi are a vital part of humanity and have been both beneficial and harmful. Negative Impact of Fungi: Disease causing to plants, humans and animals, Food spoilage, and destruction of fabrics, leather, artifacts and ornaments (biodeterioration), Poisoning – mycotoxicosis and mycetismus/Allergy, Invade moist and wet crevices as well as woodworks of many homes.
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Continuation Positive Impact of Fungi: Popular in ancient religious, spiritual, mystical and traditional rites in the orient and Africa e.g. Psilocybe mexicana , Amanita muscaria . Useful in the study of diverse fundamental biological phenomena such as Myxomycetes ( Physarium polycephalum ) and Neurospora crassa use in chemical decomposition, cytological, DNA, morphogenetic and genetic studies respectively.
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  • Fall '19
  • Nature, Candida, Fungi Union

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