What are dematiaceous molds?

Abstract. The dematiaceous (brown-pigmented) fungi are a large and heterogenous group of moulds that cause a wide range of diseases including phaeohyphomycosis, chromoblastomycosis, and eumycotic mycetoma.

Which of the following fungi are dematiaceous?

Dematiaceous fungi: Chromoblastomycosis, Mycetoma, Phaeohyphomycosis.

Is Aspergillus a dematiaceous fungi?

(26.6%), Aspergillus spp. (21.6%), and Dematiaceous fungi (11.6%). The sequence of the ITS region could identify the Fusarium and Aspergillus species at the species complex level, and the Dematiaceous isolates were accurately identified.

Is Cladosporium dematiaceous fungi?

Cladosporium spp. are dematiaceous fungi usually identified as common airborne contaminants occupying a wide variety of habitats (9). This allergenic fungus has been reported to cause subcutaneous phaeohyphomycosis and intrabronchial lesions in immunocompetent individuals (6, 8).

What are the symptoms of phaeohyphomycosis?

Phaeohyphomycosis is a chronic infectious condition caused by dematiaceous fungi which usually involve the skin and subcutaneous tissue. Subcutaneous phaeohyphomycosis is characterised by papulonodules, verrucous, hyperkeratotic or ulcerated plaques, cysts, abscesses, pyogranuloma, non-healing ulcers or sinuses.

Is bipolaris a dematiaceous fungi?

Dematiaceous Fungi Among several other genera, Bipolaris or Exserohilum (formerly Drechslera in part), Curvularia, Fonsecaea,186 and Wangiella (Exophiala) often have been reported as a cause of infection in non-immunocompromised hosts. Cladophialophora bantiana has a remarkable neurotropism.

How do you distinguish Aspergillus species?

Clinical microbiology laboratories rely heavily on morphology-based identification methods for Aspergillus species wherein diagnostic criteria include the recognition of asexual or sexual structures and their characteristics such as shape, size, color, ornamentation and/or mode of attachment.

What Colour is Aspergillus?

Aspergillus is black on the surface and usually white-ish or yellow underneath. There are approximately 180 species of it, but you’ll often find aspergillus niger growing both in nature and in the damp area of houses. Another species, aspergillus flavus, is yellow-green in color and gold or reddish-brown underneath.

How do you identify Cladosporium?

Species belonging to Cladosporium are characterized by specific conidiophores, which are erect, straight, or geni-culate and produce abundant branched acropetal chains of olive green to brown conidia with a unique coronate scar structure [12].