|| Aspergillus niger|
||Animal pathogen; spoilage organism|
||Genus name: to scatter.|
Species epithet: black.
|Significance:||A. niger is found all over the world, but is less important as a pathogen in veterinary and human medicine. However, it is important as a spoilage organism.
[Of minor importance]
|The colonies are initially white, but the colour turns black after a few days when conidia spores begin to form. The colonies grow all over the plate.
||The conidial spores are dark brown in color and 4-5 µm in diameter.
||Aspergillus spp. are aerobic and chemorganotrophic organisms. They are extremely important in degrading organic matter in nature. A. niger is thermotolerant.|
||A. niger may cause black mold on the surface of certain foods, e.g. apricots, onions, peanuts and grapes etc. This mold is therefore considered a spoilage organism.
Some strains of A. niger can produce ochratoxin A in moist grains. Ochratoxins can cause impaired kidney function and even tumors in the kidneys of several different animal species.
||Can be found everywhere in soil.|
|ACC-No GenBank||Strain/Isolate||# of chrom||Size (Mbp)|
|GCA_000002855 ||CBS 513.88 ||9 ||34,0 |
|Mitochondrial DNA sequence:
|ACC-No GenBank||Strain/Isolate||Number of BP|
|NC_007445 ||N909 ||31 103 |
|18S rRNA Seq:
|ACC-No GenBank||Strain/Isolate||Number of NT|
|LC573607 ||NBRC 31638 ||1155 |
||Aspergillus is a very large genus, which consists of about 250 species.
|Comment:||A. niger is used for industrial production of i.a. citric acid and a cheese enzyme (alternative to rennet).|
||No. 4, 9, 20|