They are compatible with cell metabolism even at molar. The barley scald pathogen rhynchosporium secalis is. Blastn programs search nucleotide databases using a nucleotide query. It is an infrequent, asymptomatic infection, limited to tropical and subtropical countries. Hortaea werneckii is a black yeastlike ascomycetous fungi associated with the human superficial infection tinea nigra, which commonly occurs in tropical and subtropical countries. Hortaea werneckii here we can see the broadly ellipsoidal, twocelled annelloconidia. Aug 16, 2007 fluctuations in external salinity force eukaryotic cells to respond by changes in the gene expression of proteins acting in protective biochemical processes, thus counteracting the changing osmotic pressure. Pdf three new black yeast strains egynda08, egynda16 and egynda90 of marine origin were isolated from the egyptian off shore salt. Histoplasmosis is a disease caused by the fungus histoplasma capsulatum. Fluctuations in external salinity force eukaryotic cells to respond by changes in the gene expression of proteins acting in protective biochemical processes, thus counteracting the. Hortaea werneckii is a common saprophytic fungus believed to occur in soil. Molecular characterization of the black yeast hortaea werneckii in. The ascomycetous black yeast hortaea werneckii capnodiales, teratosphaeriaceae is the most extremely halotolerant fungus known, and as such, it has become an important. This report documents the record of a superpod sighting, composed of hundreds of shortbeaked common dolphins delphinus delphis at 2.
Hortaea, a new genus to accommodate cladosporium werneckii. Hortaea werneckii is a halophilic saprobe which occurs in natural saltpans 1 being the dominant species in hypersaline evaporation ponds 8. Fungal and bacterial diversity of svalbard subglacial ice. Compatible solutes are small organic osmolytes including but not limited to sugars, polyols, amino acids, and their derivatives. Hortaea werneckii pode ser encontrado no solo, lagos, oceano, plantas e madeira em regioes tropicais e subtropicais umidas. Jul 01, 2017 one eukaryotic extremophile to direct attention to is the ascomycetous yeast hortaea werneckii pezizomycotina, dothideomycetes, capnodiales, which is exceptionally adaptable to osmotic stress and can tolerate extracellular salt concentrations that either kill or inhibit the growth of most microorganisms gostincar et al. Swabs were streaked over the werncekii of culture media, while granitic sand samples were inoculated onto the same culture media by sprinkling wet sand grains over the. Extremophilic organisms demonstrate the flexibility and adaptability of basic biological processes by highlighting how cell physiology adapts to environmental extremes. The polymorphic black yeast hortaea werneckii capnodiales, ascomycota is extremely halotolerant growth from 0 to 30% wv nacl and has been extensively studied as a model for halotolerance in. Genome diversity and evolution in the budding yeasts. The structure of the perfluorosulfonated ionomer pfsipt111 interface in a membrane electrode assembly mealike configuration of a polymer electrolyte membrane pem fuel cell, that is, a.
Cladosporium werneckii, exophiala werneckii, pullularia werneckii, aureobasidium. Hortaea werneckii is a species of yeast in the family teratosphaeriaceae. The file may contain a single sequence or a list of. The metabarcoding analysis amplifying a small fragment of the rdna from 18s to 5. In this study, the differential gene expression of the. It is an infrequent asymptomatic infection that affects human palms and soles. Molecular characterization of the black yeast hortaea. The map kinase hwhog1 from the halophilic black yeast hortaea. Hortaea werneckii a hyphomycetes formspecies with suspected ascomycota affinity euascomycotina, exophiala werneckii phaeannellomyces werneckii and cladosporium werneckii older texts causative agent of the skin condition known as tinea nigra or tinea nigra palmaris and a formspecies. Dec 27, 2019 the composition of fungal and bacterial communities in three polythermal glaciers and associated aquatic environments in kongsfjorden, svalbard was analysed using a combination of cultivation and.
The polymorphic black yeast hortaea werneckii capnodiales. Genomic evidence for intraspecific hybridization in a clonal. Tinea nigra is a superficial mycosis caused by hortaea werneckii. Hortaea werneckii are analyzed by multilocus sequencing and aflp, and. Briefly, a haplotype nexusfile was created with dnasp 5. Genomic evidence for intraspecific hybridization in a.
Hortaea werneckii was the only common fungus isolated from the crab, seawater, yellow and black sediment samples. Pdf characterization of new strains of hortaea werneckii isolated. Mature conidia have the brown pigmentation while younger cells stain more intensely with the lactophenol cotton blue lpcb. Hortaea werneckii is an extremely halotolerant salt tolerant black yeast and can grow in. Hortaea werneckii is likely to be a common fungus atnear the hydrothermal vent system at kueishan island as it was the only fungus cultured from the sediment, seawater and crab samples. Tinea nigra is caused by the dematiaceous fungus hortaea werneckii formerly known as phaeoannellomyces werneckii, exophiala werneckii, and cladosporium werneckii. Discovery of the black yeast hortaea werneckii as the dominant fungal species in hypersaline waters. Black yeast hortaea werneckii can grow, albeit extremely slowly, in a nearly saturated salt solution 5. During a survey of black yeasts of marine origin, some isolates of hortaea werneckii were recovered from scuba diving equipment, such as silicone.
Use the browse button to upload a file from your local disk. The polymorphic black yeast hortaea werneckii capnodiales, ascomycota is extremely halotolerant growth from 0 to 30% wv nacl and has been extensively studied as a model for halotolerance in eukaryotes for over two decades. Fusarium oxysporum fun with microbiology whats buggin. Although dothideomycetous fungi are typically haploid, the reference h. Tinea nigra by hortaea werneckii, a report of 22 cases from mexico a. Pearls dimorphisminfungalpathogensof mammals,plants,andinsects. Hortaea werneckii a hyphomycetes formspecies with suspected ascomycota affinity euascomycotina, exophiala werneckii phaeannellomyces werneckii and cladosporium. The extremely halotolerant black yeast hortaea werneckii a. I have just modified one external link on hortaea werneckii.
Hortaea werneckii y18700 lecidea fuscoatra lecideaceae lecanorales af088239 leotia lubrica leotiaceae leotiales l37536 leptosphaeria maculans leptosphaeriaceae pleosporalesc u04233. Most pathogenic fungi are exogenous, their natural habitats being water, soil, and organic debris. Characterization of fungi from hypersaline environments of. Reversing salinization of soil is an expensive and long term process. Pdf insight into the recent genome duplication of the. Tina negra micologia medica basica, 5e accessmedicina. Uvadare digital academic repository tinea nigra by. Its clinical characte ristic is the appearance of a blackish brown macula of rapid growth. Uvadare digital academic repository tinea nigra by hortaea. It has been isolated from hypersaline waters of salterns as one of the predominant species of a group of halophilic. While the addition of salt to the medium is not required for its cultivation, h.
Pdf tinea nigra by hortaea werneckii, a report of 22. Characterization of new strains of hortaea werneckii isolated. Overall, the fungal communities within a glacier and among. The highosmolarity glycerol hog signaling pathway is essential for the efficient upregulation of the osmoresponsive genes. Hortaea werneckii, the best described eukaryotic halophilic model organism to date, is a characteristic black yeast. Hortaea werneckii is a common saprophytic fungus believed to occur in soil, compost. It is an infrequent asymptomatic infection that affects human palms and soles, and is mostly. This unequal taxonomic distribution is further biased in. The black yeast hortaea werneckii has been studied for more than two decades for its extreme halotolerance, which exceeds most other fungi. Structure of pt111ionomer membrane interface and its bias. The bioengineering of plants to better cope with salinization of the soil is an ongoing research effort. If numerous data are available for the saccharomycotina genomes, much more fragmented.
Characterization of fungi from hypersaline environments of solar salterns using morphological and molecular techniques sharon a. Pdf tinea nigra by hortaea werneckii, a report of 22 cases from. The extremely halotolerant black yeast hortaea werneckii a model. The project works to allow users to contribute quality articles and media files to the encyclopedia and track their progress as they are developed. May 15, 2018 the black yeast hortaea werneckii dothideomycetes, ascomycota is one of the most extremely halotolerant fungi, capable of growth at nacl concentrations close to saturation. The extremely halotolerant black yeast hortaea werneckii. Hortaea werneckii isolated from silicone scuba diving equipment in. Hortaea werneckii, polyethylene plastic, scuba diving, silicone rubber, tinea nigra. Halophilic black yeast hortaea werneckii in the cabo rojo solar salterns. Structure of pt111ionomer membrane interface and its. The mycoses with the highest incidencecandidiasis and dermatophytosisare caused by fungi that are frequent components of the normal human microbiota and highly adapted to survival on the human host. Halophilic adaptations have been studied almost exclusively on prokaryotic microorganisms. It has been isolated from hypersaline waters of salterns as one of the predominant species of a group of halophilic and halotolerant melanized yeastlike fungi, arbitrarily named as black yeasts. Symptoms of this infection vary greatly, but the disease affects primarily the lungs.
If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple faq for additional information. One end of the annelloconidia usually stains darker indicating the location of the annellated ring or the point where it was previously attached to the conidogenous annellide. Differential gene expression and hog1 interaction with. The map kinase hwhog1 from the halophilic black yeast. Correlations of the elemental compositions of primary coal. Hortaea werneckii is a dematiaceous yeast that inhabits the soil, particularly in tropical and subtropical climates. Please follow the detailed help center instructions to transfer the files to supported ereaders. Simulations of largescale coal combustors rely on accurate submodels to describe the chemical and physical changes in coal during reaction. Hortaea werneckii is one of the most salttolerant species among microorganisms. It is a black yeast that is investigated for its remarkable halotolerance. Ecology and molecular adaptations of the halophilic black.
Here, hortaea werneckii, a salt tolerant black yeast, is molecularly. Hortaea werneckii totivirus 1 hwtv1, the first viral sequence described for this fungal species to our knowledge prjna356640. As of 2007, over 30 million hectares are affected by salinization resulting in poor crop yield and a reduction of food production. Tinea nigra by hortaea werneckii, a report of 22 cases from mexico. Mycology proficiency testing program wadsworth center. Mycology proficiency testing program provides technical expertise to nysdoh clinical laboratory evaluation program clep. Adaptation of extremely halotolerant black yeast hortaea. The composition of fungal and bacterial communities in three polythermal glaciers and associated aquatic environments in kongsfjorden, svalbard was analysed using a combination of cultivation and amplicon sequencing.
Global molecular diversity of the halotolerant fungus hortaea. Pdf tinea nigra is a superficial mycosis caused by hortaea werneckii. Insight into the recent genome duplication of the halophilic. Mar 20, 2020 hortaea werneckii is a halophilic saprobe which occurs in natural saltpans 1 being the dominant species in hypersaline evaporation ponds 8. Hortaea werneckii is a common saprophytic fungus believed to occur in soil, compost, humus and on wood in humid tropical and subtropical regions and is the causative agent of tinea nigra in humans. The term mycoses refers to infections that are caused by fungi. This photomicrograph reveals some of the ultrastructural morphology exhibited by a fungal organism hortaea werneckii, also known as cladosporium werneckii, including its septate hypha, and cluster of twocelled conidia. Collaborative work developed during the fellowship period. Characterization of new strains of hortaea werneckii. Hortaea werneckii is a dematiaceous yeast that inhabits the pdf sport blogging is like a sport.
Hortaea werneckii ascomycota tinea nigra temperature, nutrition, inoculum size malassezia furfur basidiomycota pityriasis versicolor ldopa mucor spp. The expressions of delta 9, delta 12desaturases and an elongase by the extremely halotolerant black yeast hortaea werneckii are salt dependent. Sequences of malassezia restricta and of the extremely halotolerant hortaea werneckii were also found in subglacial habitats for the first time. Its most frequent sources are hypersaline environments and adjacent seawater habitats in temperate, subtropical and tropical climates. Tinea nigra by hortaea werneckii, a report of 22 cases. The structure of the perfluorosulfonated ionomer pfsipt111 interface in a membrane electrode assembly mealike configuration of a polymer electrolyte membrane pem fuel cell, that is, a vacuum evaporated pt layerpemnafion membranepfsiadhesion nafion layerpt111 single crystal, and its biasinduced change were investigated by surface xray scattering measurement at an atomic. The microbial mats located in the cabo rojo salterns are approximately 5070 mm in. Genomic adaptations of the halophilic dead sea filamentous. To emphasize this unusually wide adaptability, and to distinguish h. This photomicrograph reveals some of the ultrastructural morphology exhibited by a fungal organism hortaea werneckii, also known as cladosporium werneckii, including its septate hypha, and cluster.
61 929 848 989 955 153 359 1183 1301 443 927 1100 388 1568 931 56 1386 150 619 401 1303 1321 1606 1101 260 473 1583 1390 184 1403 569 458 678 842 562 78 524 1356 246 207 1327 810 332 1396 107