Yeasts as Indicators of Environmental Quality

Hagler, Allen N.

doi:10.1007/3-540-30985-3_21

Cited by 26 publications

(38 citation statements)

References 61 publications

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“…Yeasts such as Candida tropicalis, C. parapsilosis, C. krusei, C. guilliermondii and C. glabrata, often isolated from water environments, have been frequently reported as etiological agents of candidiasis (Pfaller et al 2003). Studies on freshwater yeasts have been focused mostly on the application of these microorganisms as organic pollution indicators (Hagler 2006;Nagahama 2006). Some studies have shown a correlation between the occurrence of yeasts in aquatic environments and the presence of fecal pollution indicators (Arvanitidou et al 2002(Arvanitidou et al , 2005de Almeida 2005;Hagler 2006;Medeiros et al 2008).…”

Section: Introductionmentioning

confidence: 99%

“…Studies on freshwater yeasts have been focused mostly on the application of these microorganisms as organic pollution indicators (Hagler 2006;Nagahama 2006). Some studies have shown a correlation between the occurrence of yeasts in aquatic environments and the presence of fecal pollution indicators (Arvanitidou et al 2002(Arvanitidou et al , 2005de Almeida 2005;Hagler 2006;Medeiros et al 2008). Yeasts could be used as indicators of sewage contamination and recreational water quality as a complement to the coliform counts currently used as indicators of recent fecal pollution (Hagler 2006).…”

Section: Introductionmentioning

confidence: 99%

“…Some studies have shown a correlation between the occurrence of yeasts in aquatic environments and the presence of fecal pollution indicators (Arvanitidou et al 2002(Arvanitidou et al , 2005de Almeida 2005;Hagler 2006;Medeiros et al 2008). Yeasts could be used as indicators of sewage contamination and recreational water quality as a complement to the coliform counts currently used as indicators of recent fecal pollution (Hagler 2006). Selective methods have been suggested for the isolation of human-associated yeasts, based mainly on incubation at 378C (Buck 1975;Buck et al 1977;Hagler et al 1986;Hagler 2006).…”

Section: Introductionmentioning

confidence: 99%

“…Yeasts could be used as indicators of sewage contamination and recreational water quality as a complement to the coliform counts currently used as indicators of recent fecal pollution (Hagler 2006). Selective methods have been suggested for the isolation of human-associated yeasts, based mainly on incubation at 378C (Buck 1975;Buck et al 1977;Hagler et al 1986;Hagler 2006). However, few studies have attempted to correlate the occurrence of yeast species able to grow at 378C in freshwater environments with fecal contamination.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Diversity and antifungal susceptibility of yeasts isolated by multiple-tube fermentation from three freshwater lakes in Brazil

Brandão

Medeiros

Duarte

et al. 2009

Journal of Water and Health

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The diversity and antifungal resistance of yeasts able to grow at 378C and the occurrence of bacterial indicators of water quality were studied in three lakes in Southeastern Brazil.The densities of yeasts, Escherichia coli, Enterococcus spp. and Pseudomonas aeruginosa were determined by the multiple-tube fermentation technique, and counts of heterotrophic bacteria were determined using the pour plate method. The yeasts were identified using physiological and molecular techniques and their resistance to amphotericin B, itraconazole and fluconazole was tested. Yeast occurrence was significantly correlated only with the density of fecal coliforms.Candida krusei, C. guilliermondii and C. tropicalis, the most frequently isolated yeast species, are associated with fecal contamination of water by warm-blooded animals. Yeast isolates were most resistant to amphotericin B (21.7%), followed by itraconazole (20%) and then fluconazole (2.8%).In addition to tests for the fecal coliform group, the density of yeasts grown at 378C could be used as a complementary microbial indicator that aquatic environments contain organic matter of human origin. The incidence of yeast species resistant to three antifungal drugs shows that these microorganisms could pose a health risk to the people who use these lakes for recreation.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Diversity and antifungal susceptibility of yeasts isolated by multiple-tube fermentation from three freshwater lakes in Brazil

Brandão

Medeiros

Duarte

et al. 2009

Journal of Water and Health

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“…Yeasts are common inhabitants of aquatic environments and their density and species diversity depend on the water type and purity (11,12). Despite this fact the knowledge of the ecology of freshwater yeasts is still incipient and present wide gaps related in particular to the factor that drive their distribution patterns, diversity and functional significance in aquatic systems (28).…”

Section: Introductionmentioning

confidence: 99%

Water quality and diversity of yeasts from tropical lakes and rivers from the Rio Doce basin in Southeastern Brazil

Medeiros¹,

Missagia²,

Brandão³

et al. 2012

Braz. J. Microbiol.

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Yeast communities were assessed in 14 rivers and four lakes from the Doce River basin in Brazil, during the rainy and dry seasons of the years 2000 and 2001. Water samples were collected at the subsurface in all sites. The following physical and chemical parameters were measured: temperature, dissolved oxygen, pH, electrical conductivity, total phosphorus, ortho-phosphate, ammonium, nitrate, nitrite and total nitrogen and the counts of faecal coliforms and heterotrophic bacteria were carried out to characterize the aquatic environmental sampled. The yeast counts were higher in aquatic environments with the highest counts of coliform and heterotrophic bacteria. These environments receive a high influx of domestic and industrial waste. A total of 317 isolates identified in forty eight yeast species were recorded in the sites sampled and the specie Aureobasidium pullulans were found in eleven out of eighteen sites sampled and some opportunistic pathogens such as the yeast species Candida krusei were isolated only in the polluted rivers with a positive correlation with the biotic and abiotic parameters that indicate sewage contamination.

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Culturable yeast diversity in urban topsoil influenced by various anthropogenic impacts

Glushakova,

Tepeeva,

Prokof’eva

et al. 2024

Int Microbiol

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Yeasts as Indicators of Environmental Quality

Cited by 26 publications

References 61 publications

Diversity and antifungal susceptibility of yeasts isolated by multiple-tube fermentation from three freshwater lakes in Brazil

Diversity and antifungal susceptibility of yeasts isolated by multiple-tube fermentation from three freshwater lakes in Brazil

Water quality and diversity of yeasts from tropical lakes and rivers from the Rio Doce basin in Southeastern Brazil

Culturable yeast diversity in urban topsoil influenced by various anthropogenic impacts

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