Groups and Sources of Yeasts in House Dust

Glushakova, A. M.; Zheltikova, T. M.; Чернов, И.Ю.

doi:10.1023/b:mici.0000016376.33146.3e

Cited by 14 publications

(7 citation statements)

References 7 publications

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“…A study using microbial markers-endotoxin activity and fungal extracellular polysaccharide-has shown that separate storage of organic household waste can lead to a clear increase in detectable levels of the microbial content in house dust (Wouters et al, 2000). Glushakova et al (2004) investigated the groups and sources of yeasts in house dust and found that the most frequently encountered indoor yeasts were epiphytic species with capability of long-term preservation in an inactive state, such as Cryptococcus diffluens and Rhodotorula mucilaginosa. Indoor plants were suggested to be a direct source of some of the epiphytic yeasts dominating in house dust.…”

Section: Indoor Sourcesmentioning

confidence: 99%

Microbial Communities Associated with House Dust

Rintala

Pitkäranta

Täubel

2012

Advances in Applied Microbiology

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Section: Indoor Sourcesmentioning

confidence: 99%

Microbial Communities Associated with House Dust

Rintala

Pitkäranta

Täubel

2012

Advances in Applied Microbiology

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“…in residential surface dust in California, United States, and air in apartments in Moscow, Russia. 49,50 In our study, we identified only one Malassezia species (M. restricta) with low abundance (1.5 × 10 −3 %) and prevalence (6.8%). Rather, we found 62 diverse yeast taxa with the most prevalent (more than 90%) genera Cyberlindnera, Cryptococcus, Aureobasidium, and Candida.…”

Section: Effects Of Environmental Conditions On Fungal Diversity and ...mentioning

confidence: 72%

“…53 In our study, species belonging to the genus Candida were found in 25% of the classrooms with generally low relative abundance (0.10%). Candida tropicalis, 50 the second most abundant (2%) single yeast species in our study, can become pathogenic in wounds or immunocompromised people. 46,54 The genus Cryptococcus, a basidiomycetous yeast, has 19 known species including two pathogenic species, C. neoformans and C. gattii, that can cause meningitis.…”

Section: Effects Of Environmental Conditions On Fungal Diversity and ...mentioning

confidence: 79%

Mycobiota and the Contribution of Yeasts in Floor Dust of 50 Elementary Schools Characterized with Sequencing Internal Transcribed Spacer Region of Ribosomal DNA

Park

Lemons

Croston

et al. 2022

Environ. Sci. Technol.

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The assemblage of fungi including unicellular yeasts in schools is understudied. We conducted an environmental study to characterize fungal communities in classroom floor dust. We collected 500 samples from 50 elementary schools in Philadelphia, PA, and evaluated room dampness/mold conditions. Genomic DNA from dust was extracted for internal transcribed spacer 1 Illumina MiSeq sequencing to identify operational taxonomic units (OTUs) organized from DNA sequences. Differential abundance analyses were performed to examine significant differences in abundance among groups. We identified 724 genera from 1490 OTUs. The genus Epicoccum was not diverse but the most abundant (relative abundance = 18.9%). Fungi were less diverse but most dissimilar in composition in the most water-damaged classrooms compared to the least water-damaged, indicating differential effects of individual classroom water-damage on fungal compositions. We identified 62 yeast genera, representing 19.6% of DNA sequences. Cyberlindnera was the most abundant (6.1%), followed by Cryptococcus, Aureobasidium, Rhodotorula, and Candida. The average relative abundance of yeasts tended to increase with increasing dampness and mold score and was significantly (p-value = 0.048) higher in the most water-damaged classrooms (22.4%) than the least water-damaged classrooms (18.2%). Our study suggests the need for further research on the potential health effects associated with exposures to yeasts in schools.

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“…These yeasts are seldom found in soil and plant residues; as a rule they are a part of the normal human microflora. However, we routinely isolated these yeasts from such substrates with low water activ ity as the dust of living spaces and the pollen of wind pollinated plants [17,18]. The cause of resistance of these species to drying requires further investigations.…”

Section: Resultsmentioning

confidence: 99%

Resistance of various yeast ecological groups to prolonged storage in dry state

et al. 2015

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Resistance of 14 yeast species belonging to different ecological groups to extensive storage in a dried state was investigated. Pedobiotic yeasts isolated mainly from the soils of humid areas (Cryptococcus podzolicus, Cr. terricola, and Lipomyces starkeyi) were the least resistant. The yeasts associated with the nectar of entomophilous plants (Metschnikowia reukaufii and Candida bombi) also exhibited low resistance to dry ing. Complete death of these species occurred during the first month of storage. Eurybiotic species from var ious environments (Cryptococcus magnus, Cryptococcus victoriae, Debaryomyces hansenii, and Cryptococcus wieringae) were somewhat more resistant. Pigmented plant associated yeasts (Rhodotorula mucilaginosa and Sporobolomyces roseus), as well as the pathogenic or opportunistic Candida strains (C. albicans and C. parap silosis), were the most resistant to drying. Thus, occurrence of yeasts in natural habitats is closely associated with their ability to survive prolonged drying.

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Groups and Sources of Yeasts in House Dust

Cited by 14 publications

References 7 publications

Microbial Communities Associated with House Dust

Microbial Communities Associated with House Dust

Mycobiota and the Contribution of Yeasts in Floor Dust of 50 Elementary Schools Characterized with Sequencing Internal Transcribed Spacer Region of Ribosomal DNA

Resistance of various yeast ecological groups to prolonged storage in dry state

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