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The exact biochemical processes in the suggested melanin-based synthesis of organic compounds or other metabolites for fungal growth, including the chemical intermediates (such as native electron donor and acceptor molecules) in the fungal cell and the location and chemical products of this process, are unknown.
Aureobasidium melanogenum, formerly known as Aureobasidium pullulans var. melanogenum is a ubiquitous black, yeast-like fungus that is found mainly in freshwater habitats. . The species also includes strains causing human infections, which were previously classified as A. pullulans
Melanin (/ ˈ m ɛ l ə n ɪ n / ⓘ; from Ancient Greek μέλας (mélas) 'black, dark') is a family of biomolecules organized as oligomers or polymers, which among other functions provide the pigments of many organisms. [1] Melanin pigments are produced in a specialized group of cells known as melanocytes.
The term "phaeohyphomycosis" was introduced to determine infections caused by dematiaceous (pigmented) filamentous fungi which contain melanin in their cell walls. [11] Phaeohyphomycosis is an uncommon infection, but the number of cases reported has been increasing in recent years. Fungal melanin is thought to be a virulence factor.
The English word fungus is directly adopted from the Latin fungus (mushroom), used in the writings of Horace and Pliny. [10] This in turn is derived from the Greek word sphongos (σφόγγος 'sponge'), which refers to the macroscopic structures and morphology of mushrooms and molds; [11] the root is also used in other languages, such as the German Schwamm ('sponge') and Schimmel ('mold').
Cladophialophora bantiana (C. bantiana) is a melanin producing mold known to cause brain abscesses in humans. [1] It is one of the most common causes of systemic phaeohyphomycosis in mammals. [2] Cladophialophora bantiana is a member of the ascomycota and has been isolated from soil samples from around the world. [3]
Presence of 1,8-dihydroxynaphthalene melanin in the cell wall [9] confers to the microfungi their characteristic olivaceous to dark brown/black colour. The consortium comprises two phylogenetically very different fungal groups. [10] [11] Many are found in the orders Capnodiales, Dothideales, and Pleosporales (class Dothideomycetes). These black ...
[1] [2] Other laccases, such as those produced by the fungus Pleurotus ostreatus, play a role in the degradation of lignin, and can therefore be classed as lignin-modifying enzymes. [3] Other laccases produced by fungi can facilitate the biosynthesis of melanin pigments. [4] Laccases catalyze ring cleavage of aromatic compounds. [5]