Aspergillus versicolor   (Vuill.) Tirab.  (Marine Fungus)
Organism information awaits expert curation
Class: Eurotiomycetes

Image copyrights: American Society for Microbiology

Lactophenol cotton blue staining of Aspergillus versicolor conidia

Colony characteristics: Colonies on CYA 16-25 mm diameter, plane or lightly sulcate, low to moderately deep, dense; mycelium white to buff or orange; conidial heads sparse to quite densely packed, greyish green; pink to wine red exudate sometimes produced; reverse orange or reddish brown. Colonies on MEA 12-25 mm diameter, low, plane, and dense, usually velutinous; mycelium white to buff; conidial heads numerous, radiate, dull or grey green; reverse yellow brown to orange brown. Colonies on G25N 10-18 mm diameter, plane or umbonate, dense, of white, buff or yellow mycelium; reverse pale, yellow brown or orange brown. No growth at 5°C. Usually no growth at 37°C, occasionally colonies up to 10 mm diameter formed.

Microscopy: Conidiophores borne from surface or aerial hyphae, stipes 300-600 µm long, with heavy yellow walls, vesicles variable, the largest nearly spherical, 12-16 µm diameter, fertile over the upper half to two-thirds, the smallest scarcely swollen at all and fertile only at the tips, bearing closely packed metulae and phialides, both 5-8 µm long; conidia mostly spherical, very small, 2.0-2.5 µm diameter, with walls finely to distinctly roughened or spinose, borne in radiate heads.

This species is remarkable for the wide range of mycelial and reverse pigmentation it may produce, especially if cultures are incubated for 14 days or so.

Synonym (s)

Common Name (s)
Economic Importance and Threats
Importance:  Dangers
(It can produce a mycotoxin sterigmatocystin and cyclopiaxonic acid. The toxins produced can cause diarrhea and upset stomach. It is reported to be a kidney and liver carcinogen. Cited as the causative agent of several different human mycoses.)

Habitat:  Estuarine, Sandy, Muddy, Coastal


• West Bengal, Kagh Island INDIA (Record: 12/1960-01/1961)
• Gujarat, Bhavnagar Coast INDIA
• Orissa, Ganjam Coast INDIA

Literature Source(s)
  • Vala, AK; Vaidya, SY and Dube, HC (2000) Cellulase make-up of certain facultative marine fungi isolated from Bhavnagar coast Journal of the Marine Biological Association of India The Marine Biological Association of India, Cochin 42(1&2) 153-156 Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • The Aspergillus website The Fungal Research Trust Available at -
  • Department of Environmental Health and Safety University of Minnesota Available at -
  • Division C American Society for Microbiology Available at -
  • Rai, JN; Tewari, JP and Mukerji, KG (1966) Mycoflora of mangrove mud Mycopathologia Springer 38(1-2) 17-31 Available at -
  • Panda, T (2010) Some sugar fungi in coastal sand dunes of Orissa, India Journal of Yeast and Fungal Research Academic Journals 1(5) 73-80 Available at -

Page last updated on:2010-12-08

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