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Wastewater treatment systems harbor specific and diverse yeast communities

Paper ID Volume ID Publish Year Pages File Format Full-Text
3699 182 2011 9 PDF Available
Title
Wastewater treatment systems harbor specific and diverse yeast communities
Abstract

Yeasts, as a group of single-celled fungi, are widely distributed in nature and play important roles in biotechnological applications. However, how the types of wastewater and the treatment processes influence yeast populations is not clear. In this study, both cultivation and culture-independent methods were used to investigate the distribution and diversity of yeasts in three typical full-scale plants processing biopharmaceutical, papermaking and municipal wastewater. Cultivable yeasts were very abundant ranging from 102 to 105 cfu g−1 sludge, and highly diverse with 48 taxons belonging to 21 different genera, thus exceeding the yeast richness reported for marine and sugar-rich soil habitats. Genera Rhodotorula, Candida, Trichosporon, Pichia and some unidentified Ascomycetes were the most frequent populations cultivated. However, the compositions of yeast community structures in the plants were dissimilar and were shaped primarily by the type of wastewater treated but also by processing conditions. Culturing yeasts is a powerful way to complement culture-independent approaches to study their diversity, since significant more yeast species, especially quite a few possible novel species were recorded and isolated by cultivation method.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► We detected the diversity of yeast in three full-scale wastewater treatment systems using PCR–DGGE and cultivation techniques. ► The yeast richness and diversity here were larger than reported for marine and sugar-rich soil habitats. ► Each wastewater system harbors specific and unique yeast community. ► Culturing yeasts is a powerful way to complement culture-independent approaches to study their diversity.

Keywords
Yeast; Wastewater treatment; Diversity; Distribution; Bioreactors; Molecular imprinting
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Wastewater treatment systems harbor specific and diverse yeast communities
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volumes 58–59, 15 December 2011, Pages 168–176
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us