THE ISOLATION OF KERATINOPHILIC FUNGI, INCLUDING MICROSPORUM GYPSEUM, FROM AUSTRALIAN SOIL

1956 ◽  
Vol 34 (3) ◽  
pp. 199-204 ◽  
Author(s):  
DM Frey ◽  
EB Durie
2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Sunil Kumar Deshmukh ◽  
Shilpa Amit Verekar

One hundred and fifty samples were collected from eleven districts of Vidarbha region of Maharashtra state and screened for the presence of keratinophilic fungi using hair baiting technique for isolation. Seventy-one isolates were recovered and identified. The cultures were identified using macro- and micromorphological features. Their identification was also confirmed by the BLAST search of sequences of the ITS1-5.8S-ITS2 rDNA region against the NCBI/Genbank data and compared with deposited sequences for identification purpose. Thirteen species of eight genera were isolated, namely, Auxarthron conjugatum (2.00%), Chrysosporium indicum (14.00%), Chrysosporium evolceanui (2.66%), Chrysosporium tropicum (4.66%), Chrysosporium zonatum (1.33%), Chrysosporium state of Ctenomyces serratus (3.33%), Gymnascella dankaliensis (1.33%), Gymnascella hyalinospora (0.66%), Gymnoascoideus petalosporus (0.66%), Microsporum gypseum complex (9.33%), Trichophyton mentagrophytes (2.00%), T. terrestre (3.33%), and Uncinocarpus queenslandicus (2.00%). This study indicates that the soils of Vidarbha region of Maharashtra may be significant reservoirs of certain keratinophilic fungi.


2012 ◽  
Vol 3 (1) ◽  
pp. 6 ◽  
Author(s):  
Sunil Kumar Deshmukh ◽  
Shilpa Amit Verekar

The parks of Mumbai are frequently visited by local residents every morning and evening. However, there are no reports on the occurrence of keratinophilic fungi in these areas. The purpose of this research was to study the occurrence of keratinophilic fungi in the public parks of Mumbai. One hundred soil samples were collected from five public parks: Kamla Nehru Park, Powai Garden, CD Deshmukh Garden, Five Gardens and Chota Kashmir. Keratinophilic fungi were isolated by the hair baiting technique using human hair as keratin bait. The cultures were identified using macroand micro-morphological features. Identification was also confirmed by the BLAST search of sequences of the ITS1-5.8S-ITS2 rDNA region against the NCBI/Genbank data and compared with deposited sequences. The ability of these fungi to use human hair was also evaluated by release of protein in liquid media. A total of 75 strains of keratinophilic fungi were recovered from 100 (75.0%) soil samples. The isolated fungi were composed of eleven species of eight genera: <em>Arthrographis kalrae</em>, A<em>uxarthron conjugatum</em>, <em>Chrysosporium indicum</em>, <em>C. queenslandicum</em>, <em>C. zonatum, Gymnascella dankaliensis</em>, <em>G. hyalinospora</em>,<em> Microsporum gypseum</em> (15.0%), <em>Myriodontium keratinophilum</em>, <em>Trichophyton mentagrophytes</em> and <em>Uncinocarpus reesii</em>. These fungi can release 148.8-307.6 μg/mL protein in liquid media when grown on human hair in shake flask culture and also decompose 16.2-38.6% of human hair after four weeks of incubation. Our study indicates that keratinophilic fungi are to be found in the soils of various public parks in Mumbai and that human hair can be a source of pathogenic fungi.


2013 ◽  
Vol 46 (1) ◽  
pp. 83-107 ◽  
Author(s):  
Teresa Korniłłowicz-Kowalska ◽  
Ignacy Kitowski ◽  
Helena Iglik

The frequency and species diversity of keratinophilic fungi in 38 nests of nine species of wetland birds were examined. Nine species of geophilic dermatophytes and 13 <em>Chrysosporium</em> species were recorded. <em>Ch. keratinophilum</em>, which together with its teleomorph (<em>Aphanoascus fulvescens</em>) represented 53% of the keratinolytic mycobiota of the nests, was the most frequently observed species. <em>Chrysosporium tropicum, Trichophyton terrestre</em> and <em>Microsporum gypseum</em> populations were less widespread. The distribution of individual populations was not uniform and depended on physical and chemical properties of the nests (humidity, pH).


Biology ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 1317
Author(s):  
Simona Nardoni ◽  
Francesca Mancianti

Although keratinophilic fungi on avian feathers have been widely described, data from European literature are quite lacking regarding Mediterranean countries. The aim of the present study was therefore to evaluate the occurrence of fungal species on feathers of different avian species in Italy. A total of 378 feather samples from both aquatic (n = 254) and terrestrial birds (n = 124), for a total of 30 bird species, were cultured for keratinophilic fungi. Fungal isolates were recognized by their macro- and micro-scopical morphology, and results were corroborated by PCR and sequencing. Keratinophilic fungi belonging to 11 different species (Scopulariopsis brevicaulis, Chrysosporium keratinophilum, Trichophyton terrestre, Microsporum gypseum, Sepedonium sp., Chrysosporium pannorum, Myriodontium sp., Chrysosporium tropicum, Chrysosporium pruinosum, Chrysosporium luteum and Aphanoascus fulvescens) were isolated from 71 animals (18.8%). The frequency of isolation of keratinophilic species from terrestrial birds was significantly higher in waterfowl. Migratory birds in Italy have been proven to carry pathogenic fungi such as dermatophytes, (A. platyrhyncos, A. crecca, E. rubecula), besides saprophytic species.


2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Keyvan Pakshir ◽  
Moosa Rahimi Ghiasi ◽  
Kamiar Zomorodian ◽  
Ali Reza Gharavi

Introduction. Keratinophilic fungi are an important group of fungi that live in soil. The aim of this study was to isolate and identify keratinophilic fungi from the soil of different parks in Shiraz.Materials and Methods. A total of 196 soil samples from 43 parks were collected. Isolation of the fungi was performed by hair bait technique. The isolated colonies were identified by morphologic feature of macro- and microconidia and molecular method, using DNA sequence analysis. ITS region of ribosomal DNA was amplified and the PCR products were sequenced.Results. 411 isolates from 22 genera were identified.Fusarium(23.8%),Chrysosporium(13.13%),Acremonium(12.65%),Penicillium(12.39%),Microsporum gypseum(1.94%),Bionectria ochroleuca(1.21%),Bipolaris spicifera(1.21%),Scedosporium apiospermum(0.82%),Phialophora reptans(0.82%),Cephalosporium curtipes(0.49%),Scedosporium dehoogii(0.24%),Ochroconis constricta(0.24%),Nectria mauritiicola(0.49%),Chaetomium(0.49%),Scopulariopsis(0.24%),Malbranchea(0.24%), andTritirachium(0.24%) were the most important isolates. Most of the fungi were isolated from the soils with the PH range of 7 to 8.Conclusion. Our study results showed that many keratinophilic fungi isolated from the parks soil are important for public health and children are an important group at a high risk of being exposed to these fungi.


Author(s):  
U. I. Hamza ◽  
M. C. Emere ◽  
T. Bulus

Keratinophilic fungi are the prime cause of various mycotic infections among children. Murtala Amusement Park is one of the preferred recreation grounds in Minna. The aim of this research was to investigate the occurrence of fungal species at Murtala Amusement Park, Minna, with the goal of identifying keratinophilic species among them. A total of 360 soil samples from six different important sites in the Park were collected during dry and rainy seasons. A total of 542 isolates from eleven genera were identified; Aspergillus, Candida, Fusarium, Paecilomyces, Mucor, Chrysosporium, Alternaria, Penicillium, Trichoderma, Microsporum, and Rhizopus.  A total of 142 and 399 fungal isolates were isolated during dry and rainy seasons respectively. Out of the soil physicochemical parameters analyzed, only Ca and Mg showed significant correlation with a number of the fungal colony at 1 % and 5 % levels of significance respectively and it occurred during dry season. There was no association between the numbers of fungal isolates recorded across the two seasons. Maximum percentage of contribution was observed with Aspergillus niger in both seasons. While the minimum percentage of contribution was observed with Microsporum gypseum (1.40 %) and Paecilomyces variottii (2.51 %) during the rainy and dry seasons respectively. Simpson’s dominance of fungal species showed 10.86 and 9.84 for dry and rainy season respectively. Evenness of fungal species at dry and rainy seasons were 0.0759 and 0.0247 respectively. Diversity index of fungal species were 2.531 and 0.908 for Shannon’s Index and Simpson’s Index respectively. A very high incidence of keratinophilic fungi demonstrated in the soil of Murtala Amusement Park is a noteworthy finding for public health significance.


2011 ◽  
Vol 6 (04) ◽  
pp. 347-351 ◽  
Author(s):  
Harish Chander Gugnani ◽  
Soni Sharma ◽  
Brijinder Gupta ◽  
Srinivas Gaddam

Introduction: Information on the prevalence of keratinophilic fungi in West Indies is scanty. Occurrence of keratinophilic fungi in soils of St. Kitts and Nevis has not been investigated previously. Methodology: The prevalence of keratinophilic fungi was investigated in 108 samples of soils of varying habitats from St. Kitts and 55 such samples from Nevis by hair-baiting technique. Fungal growths appearing on the hair baits after four to eight weeks of incubation at room temperature were microscopically examined and cultured on mycological media. Cultures were identified on the basis of colonial and microscopic features. Results: Forty-nine (45%) of the samples from St. Kitts and 38 (69%) from Nevis were positive for keratinophilic fungi. Microsporum gypseum complex, a well-known geophilic dermatophyte, was the most frequently recovered species being present in 15.7%  of soils of St. Kitts and 40% of soils of Nevis. The next commonest species recovered was Chrysosporium indicum, represented by 15 (13.9%) isolates from St. Kitts and seven (12.7%) isolates from Nevis. Other infrequently isolated keratinophilic species included Chrysosporium tropicum, Chrysosporium keratinophilum, and unidentified Chrysosporium species. Conclusions: This study is the first of its kind in the islands of St. Kitts and Nevis. A high incidence of M. gypseum complex in the soil of these islands is a noteworthy finding of public health significance.


Nature ◽  
1955 ◽  
Vol 176 (4489) ◽  
pp. 936-936 ◽  
Author(s):  
E. B. DURIE ◽  
D. FREY

2014 ◽  
Vol 56 (3) ◽  
pp. 231-234 ◽  
Author(s):  
Harish C. Gugnani ◽  
Soni Sharma ◽  
Kharl Wright

This report represents the first study of keratinophilic fungi present in soils of Jamaica. Out of the 40 soil samples examined from different habitats, 30 (75%) were positive for the presence of keratinophilic fungi, yielding 36 isolates of keratinophilic fungi. Microsporum gypseum complex (represented by 16 isolates of M. gypseum, and four of M. fulvum) was most frequent, being present in 50% of the samples. A very high occurrence of this dermatophyte in Jamaican soil is of public health significance. The remaining isolates of keratinophilic fungi were represented by Chrysosporium spp (mainly C. indicum and C. tropicum) and Sepedonium sp.


2011 ◽  
Vol 2 (1) ◽  
pp. 15 ◽  
Author(s):  
Sunil Kumar Deshmukh ◽  
Shilpa Amit Verekar

Alkaline soils commonly called as <em>Usar</em> soil having pH 7.5 to 11.0 is commonly found in regions having poor drainage and little percolation. These soils occupy vast tracts of barren lands in the northern parts of India. These areas are frequently visited by man and animals, however there are no reports on the occurrence of keratinophilic fungi from the <em>Usar</em> soils. The purpose of this research was to study the occurrence of keratinophilic fungi in the alkaline Usar soil. To investigate the occurrence of soil keratinophilic fungi from <em>Usar</em> soil, 120 samples were collected from five districts of Uttar Pradesh viz. Lucknow, Bareilly, Azamgarh, Balia and Pratapgarh. Keratinophilic fungi were isolated by the hair baiting techniques using human hair as keratin bait. The cultures were identified using macro- and micro morphological features. Eighty-tow strains of keratinophilic fungi were recovered from 120 (68.33%) soil samples. The isolated fungi were composed of ten species of five genera viz. <em>Chrysosporium indicum</em> (19.16%), <em>Microsporum gypseum</em> (12.5%), <em>Chrysosporium tropicum</em> (10.0%), <em>Chrysosporium pannicola</em> (7.5%), <em>Trichophyton terrestre</em> (5.83%), <em>Chrysosporium lucknowense</em> (4.16%), <em>Chrysosporium</em> state of <em>Ctenomyces serratus</em> (3.33%), <em>Gymnascella dankailensis</em> (3.33%), <em>Gymnoascus reessii</em> (1.66 %) and <em>Trichophyton mentagrophytes</em> (1.66 %). The presence of keratinophilic fungi in the <em>Usar</em> soils of Uttar Pradesh, India indicates that these fungi do occur at higher alkalinity.


Sign in / Sign up

Export Citation Format

Share Document