Departamento de Botânica, Instituto de Biologia, Universidade Federal da Bahia , Salvador, BA , Brasil.
Braz J Microbiol. 2012 Oct;43(4):1582-94. doi: 10.1590/S1517-838220120004000043. Epub 2012 Jun 1.
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.
对巴西多斯雷斯流域的 14 条河流和 4 个湖泊的酵母群落进行了评估，时间跨度为 2000 年和 2001 年的雨季和旱季。在所有地点均从地表水层采集水样。测量了以下物理和化学参数：温度、溶解氧、pH 值、电导率、总磷、正磷酸盐、铵、硝酸盐、亚硝酸盐和总氮，并进行了粪大肠菌群和异养细菌的计数，以表征所采集的水生环境。在有最高数量的大肠菌群和异养细菌的水生环境中，酵母数量更高。这些环境接收大量的生活和工业废物。在所采样的地点共记录了 317 株 48 种酵母分离株，在 18 个采样点中的 11 个点发现了出芽短梗霉，一些机会性病原体，如酵母属克鲁氏假丝酵母，仅在受污染的河流中分离出来，与指示污水污染的生物和非生物参数呈正相关。
