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Aspergillus ustus Aspergillus ustus is a causative agent of Aspergillosis. (Information from www.doctorfungus.org @ 2005)
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Aspergillus ustus Mold Picture
(Image Courtesy of www.doctorfungus.org @ 2005)
Take note of the biseriate fruiting head of Aspergillus ustus and its smooth brown conidiophore and small vesicle with metulae, and phialides bearing very rough, globose conidia.
For more Aspergillus mold pictures, please visit: Aspergillus mold pictures.
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Pathogenicity and Health Effects Aspergillus ustus is a causative agent of fungal endocarditis on a prosthetic valve, invasive disseminated disease, and of primary cutaneous disease in immunocompromised patients. Macroscopic Appearance Ø Growth rate is rapid and texture of colonies is wooly to cottony to somewhat granular; and Ø Surface colony color is white to yellow to drab gray, which is the most common color, to brown, but never green while the reverse is yellow to brown with a yellow diffusing pigment.
Microscopic Appearance Ø Hyphae are septate and hyaline and conidial heads are biseriate and radiate to loosely columnar; Ø Vesicles are globose to sub – globose and measures 7 – 16 µm in diameter; Ø Conidiophores are smooth – walled, brown - colored, and with length ranging from 30 – 350 µm long; Ø Metulae and phialides cover the upper portion of the vesicle; and Ø Conidia are globose, very rough - walled, and with size of 3 – 4.5 µm in diameter; and Ø Hülle cells are irregular to elongate in shape, however, must be searched got and may be light dependent.
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The mycological information http://www.doctorfungus.org http://www.mycology.adelaide.edu.au http://www.mycology.net http://www.clinical-mycology.com http://www.botany.utoronto.ca http://www.med.sc.edu http://www.tigr.org http://www.pangloss.ucsfmedicalcenter.org http://www.dermnz.org http://www.wadsworth.org http://botit.botany.wisc.edu
A Clinical Laboratory Handbook: Identifying Filamentous Fungi by St.
Germain, Guy and R. Summerbell. |
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