title: In-depth characterization of wastewater bacterial community in response to algal growth using pyrosequencing.
abstract: Microalgae have been regarded as a natural resource for sustainable materials and fuels, as well as for removal of nutrients and micropollutants from wastewater, and their interaction with bacteria in wastewater is a critical factor to consider because of the microbial diversity and complexity in a variety of wastewater conditions. Despite their importance, very little is known about the ecological interactions between algae and bacteria in a wastewater environment. In this study, we characterized the wastewater bacterial community in response to the growth of a Selenastrum gracile UTEX 325 population in a real municipal wastewater environment. The Roche 454 GS-FLX Titanium pyrosequencing technique was used for indepth analysis of amplicons of 16S rRNA genes from different conditions in each reactor, with and without the algal population. The algal growth reduced the bacterial diversity and affected the bacterial community structure in the wastewater. The following in-depth analysis of the deep-sequenced amplicons showed that the algal growth selectively stimulated Sphingobacteria class members, especially the Sediminibacterium genus population, in the municipal wastewater environment.
authors.affiliation: Department of Civil and Environmental Engineering, Yonsei University, Seoul 120-749, Republic of Korea.
authors.forename: Jangho
authors.initials: J
authors.lastname: Lee
authors.forename: Juyoun
authors.initials: J
authors.lastname: Lee
authors.forename: Tae Kwon
authors.initials: TK
authors.lastname: Lee
authors.forename: Sung-Geun
authors.initials: SG
authors.lastname: Woo
authors.forename: Gyu Seok
authors.initials: GS
authors.lastname: Baek
authors.forename: Joonhong
authors.initials: J
authors.lastname: Park
mesh_terms: D001419:Bacteria / Q000145:classification* / Q000254:growth & development*; D058448:Biota; D000460:Chlorophyta / Q000254:growth & development*; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D056265:Microbial Interactions; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA; D062065:Wastewater / Q000382:microbiology*
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D012336:RNA, Ribosomal, 16S; D062065:Wastewater