Population and Culture Age Influence the Microbiome Profiles of House Dust Mites

Hubert, Jan; Nešvorná, Marta; Kopecký, Jan; Erban, Tomáš; Klimov, Pavel B.

doi:10.1007/s00248-018-1294-x

Cited by 32 publications

(30 citation statements)

References 102 publications

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“…In other studies of D. farinae and D. pteronyssinus, Bartonella-like bacteria were detected only occasionally [7,14]. The internal microbiome of the Korean D. pteronyssinus was composed largely of the Proteobacterial species Klebsiella pneumonia, Klebsiella granulomatis, and Rhizobium multihospitum, while Czech laboratory and industrial strains were dominated by bacteria from the genera Kocuria (Actinobacteria) and Staphylococcus (Firmicutes) [14]. In addition to differences in microbiome by mite species, temporal uctuations in microbial community composition have been observed in both D. farinae and D. pteronyssinus [14].…”

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confidence: 69%

“…More recently, however, members of a Korean strain of D. farinae were without Cardinium but had an elevated proportion (30% relative abundance) of Gram-negative Bartonella-like bacteria [13]. In other studies of D. farinae and D. pteronyssinus, Bartonella-like bacteria were detected only occasionally [7,14]. The internal microbiome of the Korean D. pteronyssinus was composed largely of the Proteobacterial species Klebsiella pneumonia, Klebsiella granulomatis, and Rhizobium multihospitum, while Czech laboratory and industrial strains were dominated by bacteria from the genera Kocuria (Actinobacteria) and Staphylococcus (Firmicutes) [14].…”

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confidence: 94%

“…The microbiome of house dust mites has been recently characterized using deep sequencing of 16S ribosomal RNA (rRNA) gene amplicons [7,[11][12][13][14]. These analyses have been performed because importance of mite-associated bacteria in symbiosis and in allergen production has been demonstrated in studies employing antibiotics (e.g, 10% ampicillin), where antibiotics strongly reduced both bacterial abundance and endotoxin content in D. farinae [7].…”

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confidence: 99%

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Microbiome variation during culture growth of the European house dust mite,Dermatophagoides pteronyssinus

Nešvorná

Pekár

Shcherbachenko

et al. 2021

FEMS Microbiology Ecology

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In culture, the house dust mite, Dermatophagoides pteronyssinus, shows different growth patterns, but the composition and changes in the associated microbial community during mite culture growth are poorly known. In this study, we analyzed temporal changes in microbial communities including ‘internal’ communities (inside mites, ingested) and ‘environmental’ communities (from culture environment). Microbial community structure was correlated with guanine content (a nitrogenous waste product of mites) and mite population density. Both internal and environmental microbial communities were remarkably consistent between biological replicates from the same culture age group and were composed of relatively few dominant taxa–11 bacterial and 3 fungal operational taxonomic units (OTUs). Significant changes over time in microbial community structure in the bulk culture environment and in internal mite samples were observed. The yeast, Saccharomyces cerevisiae, a main component of the mite diet, gradually disappeared during mite culture growth and was replaced by fungi from the genera Aspergillus and Candida in both ‘internal’ and ‘environmental’ samples. In environmental samples, bacteria from the genus Lactobacillus and S. cerevisiae were negatively correlated, and Aspergillus and Candida positively correlated, with guanine content. The relative abundance of bacteria from the genus Kocuria increased with mite density but declined with increasing guanine content. The relative abundance of bacteria from the genus Virgibacillus was negatively correlated with mite density in ‘internal’ samples. Gram-positive bacteria dominated bacterial microbiomes at all time points in our experiments, indicating a more limited possibility for vaccine contamination by bacterial endotoxins (heat-stable lipopolysaccharides produced mostly by Gram-negative bacteria) in our experimental cultures.

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confidence: 69%

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confidence: 94%

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confidence: 99%

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Microbiome variation during culture growth of the European house dust mite,Dermatophagoides pteronyssinus

Nešvorná

Pekár

Shcherbachenko

et al. 2021

FEMS Microbiology Ecology

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“…Fungi digest lipids from protein substrates, and provide mites with vitamins and sterols that facilitate the assimilation of food by HDMs 72. In addition, it has been found that HDMs ingest fungi 73. However, if RH increases over 90%, there is the disproportionately growth of fungi leading to the mortality of HDM nymphs and reducing the lifespan of adult mites.…”

Section: The Current and Projected Influence Of Environmental Changesmentioning

confidence: 99%

House Dust Mite Allergy Under Changing Environments

Acevedo

Zakzuk

Caraballo

2019

Allergy Asthma Immunol Res

110

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Environmental variations induced by industrialization and climate change partially explain the increase in prevalence and severity of allergic disease. One possible mechanism is the increase in allergen production leading to more exposure and sensitization in susceptible individuals. House dust mites (HDMs) are important sources of allergens inducing asthma and rhinitis, and experimentally they have been demonstrated to be very sensitive to microenvironment modifications; therefore, global or regional changes in temperature, humidity, air pollution or other environmental conditions could modify natural HDM growth, survival and allergen production. There is evidence that sensitization to HDMs has increased in some regions of the world, especially in the subtropical and tropical areas; however, the relationship of this increase with environmental changes is not so clear as has reported for pollen allergens. In this review, we address this point and explore the effects of current and predicted environmental changes on HDM growth, survival and allergen production, which could lead to immunoglobulin E (IgE) sensitization and allergic disease prevalence. We also assess the role of adjuvants of IgE responses, such as air pollution and helminth infections, and discuss the genetic and epigenetic aspects that could influence the adaptive process of humans to drastic and relatively recent environmental changes we are experiencing.

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“…Later it became clear that they are frequent in both indoor and outdoor environments. They have been found in indoor air and house dust [13,14] and were reported to represent a large share of the microbiome of some species of house dust mites [15]. In natural environments Wallemia spp.…”

Section: Introductionmentioning

confidence: 99%

Genomic Evidence of Recombination in the Basidiomycete Wallemia mellicola

Sun

Gostinčar

Fang

et al. 2019

Genes

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One of the most commonly encountered species in the small basidiomycetous sub-phylum Wallemiomycotina is Wallemia mellicola, a xerotolerant fungus with a widespread distribution. To investigate the population characteristics of the species, whole genomes of twenty-five strains were sequenced. Apart from identification of four strains of clonal origin, the distances between the genomes failed to reflect either the isolation habitat of the strains or their geographical origin. Strains from different parts of the world appeared to represent a relatively homogenous and widespread population. The lack of concordance between individual gene phylogenies and the decay of linkage disequilibrium indicated that W. mellicola is at least occasionally recombining. Two versions of a putative mating-type locus have been found in all sequenced genomes, each present in approximately half of the strains. W. mellicola thus appears to be capable of (sexual) recombination and shows no signs of allopatric speciation or specialization to specific habitats.

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Population and Culture Age Influence the Microbiome Profiles of House Dust Mites

Cited by 32 publications

References 102 publications

Microbiome variation during culture growth of the European house dust mite,Dermatophagoides pteronyssinus

Microbiome variation during culture growth of the European house dust mite,Dermatophagoides pteronyssinus

House Dust Mite Allergy Under Changing Environments

Genomic Evidence of Recombination in the Basidiomycete Wallemia mellicola

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