[Isolation of Aspergillus tritici from internal environment (Chile): Ecological and clinical scope]

Area of Science:

• Mycology
• Indoor Microbiology
• Environmental Health

Background:

• Indoor environments are crucial habitats for humans, yet often lack ventilation, impacting microbial communities.
• Fungal communities, particularly Aspergillus species, are sensitive to indoor environmental conditions.
• Understanding indoor fungal populations is vital for public health and building management.

Purpose of the Study:

• To isolate and identify Aspergillus section Candidi from indoor environments at the School of Medicine, Universidad de Valparaiso, Chile.
• To characterize the isolated fungus using morpho-physiological and molecular methods.
• To discuss the ecological and clinical relevance of the identified species.

Main Methods:

• Environmental sampling using potato dextrose agar (PDA) medium in 10 distinct indoor locations.
• Subculturing on Czapek yeast extract agar (CYA), malt extract agar (MEA), and creatin sucrose agar (CREA) for characterization.
• Morpho-physiological and molecular techniques for species identification.

Main Results:

• One isolate belonging to Aspergillus section Candidi was successfully recovered from 20 environmental samples.
• The isolate was identified as Aspergillus tritici based on detailed morphological and molecular analyses.
• This represents the first report of Aspergillus tritici in indoor environments in this region.

Conclusions:

• Aspergillus tritici can be found in indoor environments, even in seemingly controlled settings like a medical school.
• The presence of Aspergillus tritici warrants further investigation into its ecological role and potential clinical significance.
• This finding underscores the importance of monitoring indoor air quality for fungal contaminants.