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  • 1
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    The seasonal changes of keratinolytic fungi in sediments of Catalonian Rivers (Spain) (1997)
    Springer
    Details
    Publication Date: 1997-05-01
    Print ISSN: 0049-6979
    Electronic ISSN: 1573-2932
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Published by Springer
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  • 2
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    General assessment of the occurrence of keratinolytic fungi in river and marine beach sediments of Catalonian waters (Spain) (1997)
    Springer
    Details
    Publication Date: 1997-03-01
    Print ISSN: 0049-6979
    Electronic ISSN: 1573-2932
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Published by Springer
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  • 3
    Electronic Resource
    Electronic Resource
    Relationship between presence of Salmonella and indicators of faecal pollution in aquatic habitats (1998)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 160 (1998), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The presence of Salmonella and its relationship with indicators of faecal pollution was investigated in aquatic habitats. The highest frequency was obtained in rivers (58.7% of samples) followed by freshwater reservoirs (14.8%) and sea water (5.9%). The sporadic presence of Salmonella (〈30%) on beaches with low concentrations of faecal streptococci (mean 25 CFU (100 ml)−1) may represent a potential risk for bathers in agreement with data found in previous epidemiological studies. Absence of Salmonella was observed only on beaches with very low densities (CFU (100 ml)−1) of indicator organisms (25 total coliforms, 13 faecal coliforms and 17 faecal streptococci).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1998.tb12919.x
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  • 4
    Electronic Resource
    Electronic Resource
    The occurrence of keratinolytic fungi in sediments of the river Tordera (Spain) (1997)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology ecology 22 (1997), S. 0 
    Details
    ISSN: 1574-6941
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Sediments from the inflow of the river Tordera to the Mediterranean Sea (Catalonia, Spain) were examined for keratinolytic fungi. The horse hair baiting method was used. Out of 100 Petri dishes examined, 84 were found to be positive for keratinolytic fungi. Altogether, 169 of fungal strains belonging to 13 species were observed. Aphanoascusfulvescens (teleomorph+anamorph), Chrysosporium an. Arthroderma curreyi, Ch. keratinophilum, Ch. pannicola, Trichophyton ajelloi, and Ch. tropicum prevailed in the sediments. The qualitative and quantitative composition of keratinolytic fungi depended on both the natural and water pollution factors. The main factors influencing the keratinolytic mycoflora in sediments were: water temperature, pH, dissolved oxygen concentration, dissolved substances, phosphates, ammonium, nitrates, fecal bacterial contamination, BOD5, and strong summer insolation associated with low water levels.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6941.1997.tb00362.x
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  • 5
    Electronic Resource
    Electronic Resource
    Air-borne fungi in Barcelona city (Spain). I. A two-year study (1976–1978) (1980)
    Springer
    Mycopathologia 71 (1980), S. 89-93 
    Details
    ISSN: 1573-0832
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Résumé Une étude qualitative ainsi que quantitative a été réalisée sur la population fongique présente dans l'atmosphère de la ville de Barcelone. Les genres Cladosporium et Alternaria constituent les moisissures les plus inportantes quant à leur présence parmis la population fongique étudiée durant la période de deux ans comprise entre le mois de Janvier 1976 et le mois de Janvier 1978. Le genre Pénicillium représentait le 16.3% de la totalité des colonies isolées, tandis que le genre Aspergillus ne représentait que le 2.8%. La présence d'espéces de ces genres était largement influencée par les conditions climatologiques. Les données sur la présence des différents genres de moisissures ont été établies sur une base volumétrique. La plupart des moisissures identifiables l'ont été jusqu'au genre.
    Notes: Abstract Quantitative and qualitative studies were made of the fungi of the air in Barcelona City. The genera Cladosporium and Alternaria formed two of the most important components of the fungus population studied during a two-year period running from January 1976 through January 1978. Penicillium species formed the 16.3 % of the total colonies while Aspergillus species represented only the 2.8 %. The occurrence of these genera was greatly affected by climatic conditions. An attempt was made to summariza the data of various kinds of fungi on a volumetric basis. Most of the fungi reported here have been identified as far as genera.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00440614
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  • 6
    Electronic Resource
    Electronic Resource
    Morphological changes in strains of Aspergillus flavus link ex fries and Aspergillus parasiticus speare related with aflatoxin production (1980)
    Springer
    Mycopathologia 72 (1980), S. 171-174 
    Details
    ISSN: 1573-0832
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Two strains ofAspergillus flavus Linkex Fr. and two strains ofA. parasiticus Speare were cultured on crushed moist wheat (Triticum durum var. Pané no. 247) for aflatoxin production studies in correlation with morphological changes. The toxicogenic strains were adapted to the substratum by means of successive transfers at regular intervals (72 h.) The amount aflatoxins synthesized by the toxicogenic strains decreased gradually after succesive subculturing. The decrease was accompanied by marked morphological changes. One of the strains studied,A. flavus NRRL 3251, lost completly the capacity of aflatoxin synthesis after several subcultures, presenting at the same time strong morphological variations.A. flavus CBS 120.62 also lost its toxicogenicity after six subcultures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00572660
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  • 7
    Electronic Resource
    Electronic Resource
    Studies on keratinophilic fungi. Ix: Neoarachnotheca gen. nov. and a new species of Nannizziopsis (1997)
    Springer
    Antonie van Leeuwenhoek 72 (1997), S. 149-158 
    Details
    ISSN: 1572-9699
    Keywords: keratinophilic fungi ; Neoarachnotheca ; Neoarachnotheca keratinophila ; Nannizziopsis tropicalis ; Onygenales ; taxonomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Neoarachnotheca is proposed as a new genus of Onygenales. The outstanding generic characteristics are white, spherical ascomata with a wall formed by a network of hyphae and spherical, subhyaline ascospores with an irregular sheath. Nt. keratinophila, the type species, characterized by wavy peridial hyphae has been isolated from marine and river sediments and Myriodontium keratinophilum is its anamorph. Nannizziopsis tropicalis is proposed as a new species based on a strain isolated from soil in Burundi. RFLPs analysis of ITS and 5.8S rDNA support these proposals. The differences with related genera are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1000394118040
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  • 8
    Electronic Resource
    Electronic Resource
    Prevalence of Salmonella serotypes in environmental waters and their relationships with indicator organisms (1999)
    Springer
    Antonie van Leeuwenhoek 75 (1999), S. 285-292 
    Details
    ISSN: 1572-9699
    Keywords: coliforms ; environmental waters ; Salmonella serotypes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The incidence of serotypes of Salmonella in three types of environmental water (sea, river and fresh reservoirs) from north-east Spain was investigated. The study was performed at specific sampling locations during the summer for a period of five years (1992–1996). A total of 823 strains were isolated and 55 different serotypes were identified, 42 were recovered from sea water, 32 from river water and 12 from freshwater reservoirs. The most frequently isolated serotypes coincided with those involved in clinical cases in the area studied. Salmonella enteritidis was the most common (111 isolates), it was found in all types of water, although most predominantly in sea water (16.1% of the isolates). This serotype, together with S. hadar, significantly increased in frequency during the five year study period. The most frequent serotypes in river water and freshwater reservoirs were S. virchow (9.5%) and S. mikawasima (23.8%) respectively. Significant differences were assessed in the indicator organism densities between the samples with serotypes of clinical significance (S. enteritidis, S. infantis, S. typhimurium, S. virchow and S. paratyphi B) and those without clinical significance. Therefore their presence in all environmental waters may be of epidemiological significance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1001817305779
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  • 9
    Electronic Resource
    Electronic Resource
    X-ray microanalysis of black piedra (1997)
    Springer
    Antonie van Leeuwenhoek 72 (1997), S. 275-281 
    Details
    ISSN: 1572-9699
    Keywords: Piedraia hortae ; black piedra ; X-ray microanalysis ; extracellular material
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The elements present in the fungal structures produced by Piedraia hortae in vivo and in vitro have been investigated using electron microscopy X-ray microanalysis. Phosphorus, sulphur and calcium were detected in the nodules which developed on hair and on colonies on culture. These elements belong to the extracellular material that compacts the pseudoparenchymatous organization of the fungus. They may be present due to the capacity of melanin-like pigments to sequester ions and/or they may form part of the sulphates and phosphates of the polyanionic mucopolysaccharides that constitute the extracellular material. Environmental contaminants such as aluminium, silicon and iron were detected exclusively on the surface of the nodule. They were deposited or linked to the residual molecules produced during the breakdown of the cuticular keratin. The advantages of these techniques for elucidating the chemical nature of fungal structures are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1000409311166
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  • 10
    Electronic Resource
    Electronic Resource
    Stationary phase development of Trimmatostroma abietis (1996)
    Springer
    Antonie van Leeuwenhoek 69 (1996), S. 217-222 
    Details
    ISSN: 1572-9699
    Keywords: Black yeasts ; conidiogenesis ; endoconidia ; meristematic development ; pleomorphism ; taxonomy ; ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Processes of anamorph cell replication in Trimmatostroma abietis are described. Growth and conidiation are delimited on the basis of morphological, ultrastructural and ecological criteria. Cellular expansion shifts from bidirectional intercalary in exponential phase cells to isodiametric in late stationary phase cells, in the latter case with endogenous asexual reproduction. Ultrastructural similarities to dothideaceous black yeasts are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00399609
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