Department of Molecular Biology and Biotechnology

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Browsing Department of Molecular Biology and Biotechnology by Subject "Agaricus"

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    Detailed study of the Agaricus like mushrooms at Mwalimu JK Nyerere Mlimani Campus
    (www.iiste.org, 2014) Tibuhwa, Donatha D; Mwanga, Zuhura
    A 3 years survey was conducted from 2011 to 2014 during which 133 Agaricus-like mushrooms from different places in primary forests, fields and gardens of the University of Dar es Salaam, Mwalimu JK Nyerere Mlimani Campus were collected. Agaricus-like mushrooms are morphologically characterized by medium to large size basidiocarp on the central stalk that separates easily from the cap, free gills, presence of veil and chocolate brown basidiospores in mature specimens. Characterizing them using both macro-micromorphological features and molecular markers (ITS sequences), they were revealed to be 12 species belonging to two distinct genera Agaricus L. and Hymenagaricus H. The species Agaricus xanthodermus and one un-described were suspected poisonous, edibility of 3 species were known while the edibility of the rest were unknown. Based on the result finding, one Hymenagaricus and two Agaricus species are also proposed as novel species for scientific descriptions based on International Code of Nomenclature.
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    Morphology and Molecular taxonomy of Hymenagaricus mlimaniensis species nov: a new Basidiomycota from mlimani main campus, Tanzania
    (Academic Journals, 2014) Mwanga, Zuhura; Tibuhwa, Donatha D
    Hymenagaricus mlimaniensis Mwanga & Tibuhwa sp. nov. is described from Dar es Salaam Mlimani Main Campus in the semi protected natural tropical forest left in the Dar es Salaam city. The species superficially looks like Agaricus and its differences to the closest taxa in Hymenagaricus genus is both morphologically and genetically presented. The species is distinctively characterized from the closest H. pallidodiscus Reid & Eicker and H. alphitchrous (Berk. & Broome) Heinem by having the distinctive pink-reddish colour of the disc, more white diminutive fibril on the pink-reddish background, lack of developed cortinate veil, possession of smooth margin and microscopically, the presence of clamp connections which are lacking in the two closest taxa. This study thus, describe H. mlimaniensis sp. nov. as a new species in Hymagaricus genus based on both macro-micromorphology and molecular markers.
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    Morphology and molecular taxonomy of Hymenagaricus mlimaniensis species nov: A new Basidiomycota mushroom from Mlimani main campus, Tanzania
    (2014) Mwanga, Zuhura; Tibuhwa, Donatha D.
    Hymenagaricus mlimaniensis Mwanga & Tibuhwa sp. nov. is described from Dar es Salaam Mlimani Main Campus in the semi protected natural tropical forest left in the Dar es Salaam city. The species superficially looks like Agaricus and its difference to the closest taxa in Hymenagaricus genus is both morphologically and genetically presented. The species is distinctively characterized from the closest H. pallidodiscus Reid & Eicker and H. alphitchrous (Berk. & Broome) Heinem by having the distinctive pink-reddish colour of the disc, whiter diminutive fibril on the pink-reddish background, lack of developed cortinate veil, possession of smooth margin and microscopically, the presence of clamp connections which are lacking in the two closest taxa. This study thus, describe H. mlimaniensis sp. nov. as a new species in Hymagaricus genus based on both macro-micromorphology and molecular markers.