Liébana, RaquelArregui García-Rovés, LucíaBelda Aguilar, IgnacioGamella, LuisSantos de la Sen, AntonioMarquina Díaz, DomingoSerrano Barrero, Susana Lourdes2023-06-192023-06-1920150892-701410.1080/08927014.2014.998206https://hdl.handle.net/20.500.14352/35450The yeast community was studied in a municipal full-scale membrane bioreactor wastewater treatment plant (MBR-WWTP). The unexpectedly high diversity of yeasts indicated that the activated sludge formed a suitable environment for them to proliferate, with cellular concentrations of 2.2 ± 0.8 × 103 CFU ml−1 . Sixteen species of seven genera were present in the biological reactor, with Ascomycetes being the most prevalent group (93%). Most isolates were able to grow in a synthetic wastewater medium, adhere to polyethylene surfaces, and develop biofilms of variable complexity. The relationship between yeast populations and the protists in the MBR-WWTP was also studied, revealing that some protist species preyed on and ingested yeasts. These results suggest that yeast populations may play a role in the food web of a WWTP and, to some extent, contribute to membrane biofouling in MBR systems.engjournal articlehttp://www.tandfonline.com/toc/gbif20/currentrestricted access579wastewater treatmentmembrane bioreactorbiofoulingyeast biofilmsprotistspredationBiologíaMicrobiología (Biología)24 Ciencias de la Vida2414 Microbiología