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Aspergillus glaucus group The U.S. Government's Occupational Safety and Health Administration [OSHA] lists Aspergillus glaucus as an allergen and an irritant and a cause of Hypersensitivity Pneumonitis and Dermatitis.
Aspergillus glaucus is a causative agent of Aspergillosis. (Information from www.doctorfungus.org @ 2005)
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Aspergillus glaucus Mold Picture
(Image Courtesy of www.doctorfungus.org @ 2005)
Smooth, pale brown conidiophores, and subglobose vesicles, with phialides covering at least two-thirds of the vesicle and bearing finely roughened conidia.
For more Aspergillus mold pictures, please visit: Aspergillus mold pictures.
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Ecology
Aspergillus glaucus is a cosmopolitan and osmophilic fungus which is isolated primarily from house dust, plant material and from soil.
Pathogenicity and Health Effects Aspergillus glaucus is an occasional causative agent of pulmonary or disseminated infection among immunocompromised patients.
Macroscopic Appearance
Ø Growth rate is slow to moderately rapid and the texture of colonies varies from downy to powdery; and Ø Surface colony color is grayish - turquoise to deep green with yellow central portions due to cleistothecial production while reverse is yellowish to chestnut.
Microscopic Appearance
Ø Conidial heads radiate to loosely columnar; Ø Conidiophores are smooth – walled, uncolored to pale brown, and 200 - 350 µm long; Ø Hyphae are septate and hyaline and phialides cover the upper portion of the vesicle; Ø Vesicles are globose to sub – globose, uniseriate, and with diameter of 15 – 30 µm; Ø Conidia are ellipsoidal or round, finely roughened to echinulate, and with diameter of 3.5 – 6.5 µm; Ø Cleistothecia are globose, thin – walled, typically numerous, yellow – colored, normally covered with red hyphae, more prominent than conidial heads at times, and with diameter of 75 – 125 µm; Ø Asci contains eight spores; and Ø Ascospores are hyaline, pale, and mature within two to three weeks, smooth to slightly roughened, with or without equatorial crests, with size ranging from 6 – 7 x 3.5 – 5 µm.
*Note: Eurotium herbarium is the sexual form or teleomorph of Aspergillus glaucus.
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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: |
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