This Aspergillus sp. has been isolated during indoor air sampling.
The major characteristic feature of this fungus is the presence of hulle cells in microscopic examination.
Please see the attached files.
figure 1 shows the macroscopic features of colony, two (left) and five (right) days after sampling.
Figure 2 shows the features of colony after 12 days of incubation (PDA).
Figure 3 shows the features of colony after 12 days of incubation (Czapek dox agar).
Figure 4 shows the microscopic features of colony.
Hi Shahram,
I agree with Irene and Supram its looks like
Aspergillus nidulans.
Best regards
Hi Shahram,
I agree with Irene and Supram its looks like
Aspergillus nidulans.
Best regards
Article Identification and characterization of putative xylose and c...
Dear friends
Thank you for your answers.
I didn't find any sexual state structures (cleistiothecium, etc.) even after 20 days of incubation at room temperature.
Cleistothecium development might be inuced by the some kind of stress. Any case, some strains need longer time for developing the friut bodies. You may still check your strain for ability to produce it
Dear Shahram,
presence of the Hulle cells indicate also a member of Usti section, not only Nidulantes (both in subgenus Nidulantes, genus Aspergillus) and yes, rather common in indoor samples. Taxonomy of these species is rather difficult especially species around A.nidulans (the same so for usti group), currently one needs to apply betatubulin or calmodulin sequencing. in aspergilli always combine phenotyping with moleculars. then you can even find and determine a new taxon/new taxa !! remember that :-)
good luck!
best regards Roman
Dear Maria and dear Roman
Thank you for your answers.
I agree that it could be from Usti section.
I searched for similar colonies in both Usti and Nidulantes sections but I have not found any.
In this case based on the comment of Roman, it worth to identify this fungus by molecular methods.
Regards
Shahram
Hi Sir.
Classification of fungus is a difficult process . Images can not be identified fungus species . Molecular identification is necessary for confirmation. see the following websites:
http://mic.microbiologyresearch.org/content/journal/micro/10.1099/00221287-147-1-239?crawler=true&mi
Dear Dr. Shahram Mahmoudi ,
Warms greetings,
Please find two valuable article that showed the main methods for identification of this Aspergillus.
I’m looking forward to sharing what I’ve learned so far and hearing what the other participants have to say. Mobile: +98-919 596 6273 Email: [email protected]
I agree with Dr.Neeran ,Classification of fungus is a difficult depending on morphology fungus
I agree with Dr.Neeran ,Classification of fungus is a difficult depending on morphology fungus
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