Species/Subspecies: Aspergillus ochraceus
Categories: Of practical use; spoilage organism
Etymology: Genus name: to scatter.
Species epithet: ocher-coloured.
Significance:  [Unclassified]   
Macromorphology (smell):
Aspergillus ochraceus 
Kolonier of A. ochraceus grow fast (about 50 mm in 7 days). Many nice pictures of A. ochraceus can be found in the reference below (no. 89).
Aspergillus ochraceusAspergillus ochraceus
The conidia are 2.5-3.5 µm in diameter.
Spec. Char.: Optimal temperature for growth is 25°C.
Disease/effect: Many more animal species than those listed in the table below can be affected by ochratoxicosis. Dogs are particularly sensitive, while ruminants are less sensitive.
Hosts/substrateDisease/effectClinical picture or result
Cereals, dried legumes and fruit, coffee beans and grapes.SpoilageMold coating
PigOchratoxicosisDepression, inappetence, polydipsia (excessive thirst), polyuria (large volumes of urine) and weight loss.
PoultryOchratoxicosisReduced growth rate, reduced egg production and low quality of the eggs.
DogsOchratoxicosisWeight loss, vomiting, tenesmus (painful urgency to pass stool or to urinate), bloody diarrhea, fever, tonsillitis, dehydration and prostration.
Humans, adultsOchratoxicosisChronic neurotoxic, immunosuppressive, genotoxic, carcinogenic (on liver and kidney) and teratogenic effects.
Virulence Factors: Produces the mycotoxins ochratoxin A, citrinin och mellein (= dihydroisocoumarin).
Genome Sequence:
ACC-No GenBankStrain/Isolate# of chromSize (Mbp)
GCA_004849945 fc-1RG  38.8 

18S rRNA Seq:
ACC-No GenBankStrain/IsolateNumber of NT
NC_AB002068 NRRL 1642 1767 

ITS regions:
ACC-No GenBankStrain/IsolateNumber of NT
NC_077150 NRRL 398 613 

Practical use:A. ochraceus produces many different enzymes, which can have industrial importance, e.g. hydrolases, proteases, tannases, oxidases and cellulases (see ref. 91 below).
Comment:In terms of ochratoxin production, Aspergillus alliaceus appears to be more important on at least some substrates than A. ochraceus (see ref. 90 below).
Reference(s): No. 89, 90, 91

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Swedish University of Agricultural Sciences