Quantitative molecular assay for fingerprinting microbial communities of wastewater and estrogen-degrading consortia. Academic Article uri icon


  • A quantitative fingerprinting method, called the real-time terminal restriction fragment length polymorphism (real-time-t-RFLP) assay, was developed for simultaneous determination of microbial diversity and abundance within a complex community. The real-time-t-RFLP assay was developed by incorporating the quantitative feature of real-time PCR and the fingerprinting feature of t-RFLP analysis. The assay was validated by using a model microbial community containing three pure strains, an Escherichia coli strain (gram negative), a Pseudomonas fluorescens strain (gram negative), and a Bacillus thuringiensis strain (gram positive). Subsequently, the real-time-t-RFLP assay was applied to and proven to be useful for environmental samples; the richness and abundance of species in microbial communities (expressed as the number of 16S rRNA gene copies of each ribotype per milliliter) of wastewater and estrogen-degrading consortia (enriched with 17alpha-estradiol, 17beta-estradiol, or estrone) were successfully characterized. The results of this study strongly suggested that the real-time-t-RFLP assay can be a powerful molecular tool for gaining insight into microbial communities in various engineered systems and natural habitats.

published proceedings

  • Appl Environ Microbiol

altmetric score

  • 3

author list (cited authors)

  • Yu, C., Ahuja, R., Sayler, G., & Chu, K.

citation count

  • 58

complete list of authors

  • Yu, Chang-Ping||Ahuja, Rajiv||Sayler, Gary||Chu, Kung-Hui

publication date

  • March 2005