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    Diversity and dynamics of dominant and rare bacterial taxa in replicate sequencing batch reactors operated under different solids retention time

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    Type
    Article
    Authors
    Bagchi, Samik
    Garcia Tellez, Berenice
    Rao, Hari Ananda cc
    Lamendella, Regina
    Saikaly, Pascal cc
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Water Desalination and Reuse Research Center (WDRC)
    Environmental Science and Engineering Program
    Date
    2014-10-19
    Online Publication Date
    2014-10-19
    Print Publication Date
    2015-03
    Permanent link to this record
    http://hdl.handle.net/10754/575620
    
    Metadata
    Show full item record
    Abstract
    In this study, 16S rRNA gene pyrosequencing was applied in order to provide a better insight on the diversity and dynamics of total, dominant, and rare bacterial taxa in replicate lab-scale sequencing batch reactors (SBRs) operated at different solids retention time (SRT). Rank-abundance curves showed few dominant operational taxonomic units (OTUs) and a long tail of rare OTUs in all reactors. Results revealed that there was no detectable effect of SRT (2 vs. 10 days) on Shannon diversity index and OTU richness of both dominant and rare taxa. Nonmetric multidimensional scaling analysis showed that the total, dominant, and rare bacterial taxa were highly dynamic during the entire period of stable reactor performance. Also, the rare taxa were more dynamic than the dominant taxa despite expected low invasion rates because of the use of sterile synthetic media.
    Citation
    Bagchi, S., Tellez, B. G., Rao, H. A., Lamendella, R., & Saikaly, P. E. (2014). Diversity and dynamics of dominant and rare bacterial taxa in replicate sequencing batch reactors operated under different solids retention time. Applied Microbiology and Biotechnology, 99(5), 2361–2370. doi:10.1007/s00253-014-6134-4
    Sponsors
    This research was supported by discretionary investigator funds (P.E.S.) at King Abdullah University of Science and Technology (KAUST). Special thanks are extended to Mohammed Alarawi at the Bioscience Core Laboratory at KAUST for their assistance in 16S rRNA gene pyrosequencing.
    Publisher
    Springer Nature
    Journal
    Applied Microbiology and Biotechnology
    DOI
    10.1007/s00253-014-6134-4
    PubMed ID
    25326778
    ae974a485f413a2113503eed53cd6c53
    10.1007/s00253-014-6134-4
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Environmental Science and Engineering Program; Water Desalination and Reuse Research Center (WDRC)

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