This fungus belongs to Aspergillus niger group. To delineate the species in the group you have to note the colour of the conidial heads, phialides in one series or two series, conidia size. Conidiophore wall smooth and Conidial heads seems to be black so niger group. In this group there are more than 5 species which can be identified by phialides and conidia.
Dear , Maliha Fatima . I agree with Anisetti Thammayya. It belongs to Aspergillus niger group ( Section Nigri ) . As I see in the picture it may be Aspergillus carbonareus which belongs to this group and gave a black colonies like carbon . You also must check phialides weather they were biseriate or uniseriate , conidia size and shape and conidial margins weather they were smooth or roughened , the color of colony reverse on MEA or CYA media . You also can return to the References ( The genus Aspergillus by Raper and Fennel , 1973 ) ; Al-Musallam , 1980 ; Pitt and Hocking , 1985 .
I hope you have a good luck.
Dear , Maliha Fatima .
You also can depend the reference (( A laboratory guide to the common Aspergillus species and their teleomorphs )) By : Klich and Pitt , 1988. Commonwealth Scientific and Industrial Research Organization.
Best Regards
Dear,
I think you have to observe your fungus using higher power, if it belong to Genus Aspergillus as mentioned above I think you have to identify your isolate using molecular technique.
Dear Maliha Fatima
The pictures you have displayed are not very clear, even it is close to Aspergillus. But for almost the identification of this fungus is based on the morphological characteristics of the colony and microscopic examinations. You have to show the magnification of the images more phots to the conidiophore to improve the identification
Good luck
Maliha, quite alright its Aspergillus but to have or rather know the species using morphological characteristics more images are nêeded.
If the colour of the colony is blackish, it could be A. niger. Spores are then slightly ornamented.
I agree it looks like an Aspergillus sp.
However, it also resembles a mucoralean zygomycete, like Rhizopus or Gilbertella, which are commonly cultured from fruit. Look for septate hyphae, especially at the foot of the sporangiophore/conidiophore (zygo = aseptate; Aspergillus is septate). Also, sporogenesis differs, with zygo sporangiospores formed in sporangia and Aspergillus conidia formed from phialides.
Hope this helps.
As per color of the colony on control plate and staining it could be Aspergillus niger. More pictures of morphological characteristices helps in better clearification.
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