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Applied Biochemistry and Biotechnology

, Volume 187, Issue 4, pp 1437–1447 | Cite as

Performance and Microbial Community Analysis of Bioaugmented Activated Sludge System for Indigo Production from Indole

  • Xuwang Zhang
  • Yuanyuan QuEmail author
  • Qiao Ma
  • Shuzhen Li
  • Chunxiao Dai
  • Shengyang Lian
  • Jiti Zhou
Article

Abstract

Indole is a typical nitrogen-containing aromatic pollutant in coking wastewater, and it can be used for the microbial production of indigo, one of the oldest dyestuffs. In this study, the activated sludge system bioaugmented with two indigo-producing bacterial strains, wild strain Comamonas sp. MQ and recombinant Escherichia coli (ND_IND), was constructed to investigate indigo bioproduction from indole. During the operation, the bioaugmentation could promote the production of indigo, especially in early stages, and the indigo yields gradually increased from 17.5 ± 0.4 to 44.3 ± 0.5 mg/L with the increase of influent indole (80 to 282 mg/L). Illumina MiSeq sequencing revealed that the microbial community could have a noticeable shift driven by the bioaugmentation and high indole pressure. The indigenous bacteria could be more responsible for indigo production, and the dominant genera Comamonas, Diaphorobacter, Paracoccus, Aquamicrobium, Pseudomonas, and Truepera could be the key functional taxa. Based on FAPROTAX (Functional Annotation of Prokaryotic Taxa) analysis, the nitrogen metabolism-related functional groups could play important roles in indole biotransformation and indigo biosynthesis. This study should provide insights into microbial production of indigo by microbial communities.

Keywords

Indigo Indole Bioaugmentation Microbial community 

Notes

Funding information

This work was supported by National Natural Science Foundation of China (No. 51508068) and the Fundamental Research Funds for the Central Universities (No. DUT16RC(3)118).

Compliance with Ethical Standards

Conflict of Interest

The authors declare that they have no conflict of interest.

Ethical Statement

The article does not contain any studies with human participants performed by any of the authors.

Supplementary material

12010_2018_2879_MOESM1_ESM.doc (1.6 mb)
ESM 1 (DOC 1674 kb)

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Xuwang Zhang
    • 1
    • 2
  • Yuanyuan Qu
    • 1
    Email author
  • Qiao Ma
    • 1
    • 3
  • Shuzhen Li
    • 1
  • Chunxiao Dai
    • 1
  • Shengyang Lian
    • 1
  • Jiti Zhou
    • 1
  1. 1.State Key Laboratory of Fine Chemicals, Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and TechnologyDalian University of TechnologyDalianChina
  2. 2.Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Food and EnvironmentDalian University of TechnologyPanjinChina
  3. 3.Institute of Environmental Systems Biology, College of Environmental Science and EngineeringDalian Maritime UniversityDalianChina

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