Melanin production by a yeast strain XJ5-1 of Aureobasidium melanogenum isolated from the Taklimakan desert and its role in the yeast survival in stress environments

Jiang, Hong; Liu, Nannan; Liu, Guanglei; Chi, Zhe; Wang, Jianming; Zhang, Ly-Ly

doi:10.1007/s00792-016-0843-9

Cited by 46 publications

(19 citation statements)

References 32 publications

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“…Melanin production by the fungi does not affect their growth or development but enhances survival under environmental stresses. These include protection against UV irradiation, the accumulation of pollutants (such as heavy metals), tolerance to extreme temperatures, desiccation or high salts concentrations, as well as resistance to the cell wall-degrading enzymes and other pathogens [53][54][55][56]. Several studies confirm the stimuli effect of UV radiation on the enhanced melanin production by the A. pullulans [57][58][59].…”

Section: Surface Colourmentioning

confidence: 99%

Bioinspired Living Coating System in Service: Evaluation of the Wood Protected with Biofinish during One-Year Natural Weathering

Poohphajai

Sandak

Sailer³

et al. 2021

Coatings

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The service life performance of timber products exposed to natural weathering is a critical factor limiting the broad use of wood as an external building element. The goal of this study was to investigate the in-service characterization of an innovative biofinish coating system. It is a novel surface finishing solution based on the bioinspired concept of living fungal cells designed for effective wood protection. The performance of Scots pine (Pinus sylvestris L.) wood coated with biofinish was compared with uncoated references. Samples were exposed to natural weathering for 12 months under the climatic conditions of northern Italy. The visual appearance, colour, gloss, wettability, and 3D surface topography of the wood surface were examined. Results revealed that the total colour changes (∆E) of biofinish-coated wood were negligible. Untreated Scots pine wood revealed the changes in colour after just three months of exposure. The gloss changes of both surface types were small. The contact angle measured on biofinish-coated wood was higher compared to that of uncoated Scots pine. Surface roughness increased in uncoated wood due to the erosion effect caused by the weathering progress. Conversely, the surface roughness of biofinish-coated samples decreased along the exposure time. This phenomenon was explained by two self-healing mechanisms: migration of non-polymerized oil to the cracked surface, where it polymerizes and creates a closed layer, and local regrowth to cover damaged spots by living fungal cells present in the coating. The obtained results revealed the superior aesthetic performance of the biofinish surface treatment against natural weathering. By considering the fully bio-based nature of the investigated coating, it was concluded that this solution can be an attractive alternative for state-of-the-art wood protection technologies.

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Section: Surface Colourmentioning

confidence: 99%

Bioinspired Living Coating System in Service: Evaluation of the Wood Protected with Biofinish during One-Year Natural Weathering

Poohphajai

Sandak

Sailer³

et al. 2021

Coatings

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“…Strains of A. melanogenum can be isolated from diverse, mainly oligotrophic and aqueous habitats [5]-they were found in hypersaline water [7], in Greenland glacial ice [8], but also in association with plants [9,10] and in desert soil [11]. Importantly, A. melanogenum can colonize indoor environments and is found often in large numbers in washing machines [12], dishwashers [13], tap water [14], house dust [15], and food [16].…”

Section: Introductionmentioning

confidence: 99%

Virulence Traits and Population Genomics of the Black Yeast Aureobasidium melanogenum

Černoša

Sun²,

Fang³

et al. 2021

JoF

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The black yeast-like fungus Aureobasidium melanogenum is an opportunistic human pathogen frequently found indoors. Its traits, potentially linked to pathogenesis, have never been systematically studied. Here, we examine 49 A. melanogenum strains for growth at 37 °C, siderophore production, hemolytic activity, and assimilation of hydrocarbons and human neurotransmitters and report within-species variability. All but one strain grew at 37 °C. All strains produced siderophores and showed some hemolytic activity. The largest differences between strains were observed in the assimilation of hydrocarbons and human neurotransmitters. We show for the first time that fungi from the order Dothideales can assimilate aromatic hydrocarbons. To explain the background, we sequenced the genomes of all 49 strains and identified genes putatively involved in siderophore production and hemolysis. Genomic analysis revealed a fairly structured population of A. melanogenum, raising the possibility that some phylogenetic lineages have higher virulence potential than others. Population genomics indicated that the species is strictly clonal, although more than half of the genomes were diploid. The existence of relatively heterozygous diploids in an otherwise clonal species is described for only the second time in fungi. The genomic and phenotypic data from this study should help to resolve the non-trivial taxonomy of the genus Aureobasidium and reduce the medical hazards of exploiting the biotechnological potential of other, non-pathogenic species of this genus.

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“…Aureobasidium pullulans [60], A. melanogenum [61], E. album [62], Aspergillus spp., Cladosporium spp. [63], P. crustosum [64], Wallemia spp.…”

Section: Discussionmentioning

confidence: 99%

Evaluating the xerophilic potential of moulds on selected egg tempera paints on glass and wooden supports using fluorescent microscopy

Kosel

Kavčič

Legan

et al. 2021

Journal of Cultural Heritage

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Highlights• 11 fungal isolates from cultural heritage institutions' interiors were screened for xerophilic trait • Specially designed incubators were constructed to hold specific RH levels of 55 %, 63 % and 74 %• Fungal growth was monitored at low relative humidity on wood and glass supports painted by traditional artists' paints • Effects of pigments, support materials and strain variability are discussed

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Melanin production by a yeast strain XJ5-1 of Aureobasidium melanogenum isolated from the Taklimakan desert and its role in the yeast survival in stress environments

Cited by 46 publications

References 32 publications

Bioinspired Living Coating System in Service: Evaluation of the Wood Protected with Biofinish during One-Year Natural Weathering

Bioinspired Living Coating System in Service: Evaluation of the Wood Protected with Biofinish during One-Year Natural Weathering

Virulence Traits and Population Genomics of the Black Yeast Aureobasidium melanogenum

Evaluating the xerophilic potential of moulds on selected egg tempera paints on glass and wooden supports using fluorescent microscopy

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