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Integrated proteomic and metabolomic analysis of a reconstructed three-species microbial consortium for one-step fermentation of 2-keto-l-gulonic acid, the precursor of vitamin C

  • Qian Ma
  • Yan-Hui Bi
  • En-Xu Wang
  • Bing-Bing Zhai
  • Xiu-Tao Dong
  • Bin Qiao
  • Ming-Zhu DingEmail author
  • Ying-Jin Yuan
Fermentation, Cell Culture and Bioengineering - Original Paper

Abstract

Microbial consortia, with the merits of strong stability, robustness, and multi-function, played critical roles in human health, bioenergy, and food manufacture, etc. On the basis of ‘build a consortium to understand it’, a novel microbial consortium consisted of Gluconobacter oxydans, Ketogulonicigenium vulgare and Bacillus endophyticus was reconstructed to produce 2-keto-l-gulonic acid (2-KGA), the precursor of vitamin C. With this synthetic consortium, 73.7 g/L 2-KGA was obtained within 30 h, which is comparable to the conventional industrial method. A combined time-series proteomic and metabolomic analysis of the fermentation process was conducted to further investigate the cell–cell interaction. The results suggested that the existence of B. endophyticus and G. oxydans together promoted the growth of K. vulgare by supplying additional nutrients, and promoted the 2-KGA production by supplying more substrate. Meanwhile, the growth of B. endophyticus and G. oxydans was compromised from the competition of the nutrients by K. vulgare, enabling the efficient production of 2-KGA. This study provides valuable guidance for further study of synthetic microbial consortia.

Keywords

Microbial consortium Communication Proteomics Metabolomics One-step fermentation 

Notes

Acknowledgements

This work was funded by the Ministry of Science and Technology of China (“973″ Program: 2014CB745100), the National Natural Science Foundation of China (21676190, 21621004), Innovative Talents and Platform Program of Tianjin (16PTGCCX00140, 16PTSYJC00050).

Authors’ contributions

QM and YHB are co-first authors of this work; QM, YHB, MZD and YJY designed the project and drafted the manuscript; QM, YHB, EXW, BBZ, XTD, BQ, and MZD performed the experiments; QM, EXW and MZD did the omics analysis; MZD and YJY supervised the whole research and revised the manuscript. All authors read and approved the final version of manuscript.

Compliance with ethical standards

Conflict of interests

The authors declare no competing financial interests.

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Copyright information

© Society for Industrial Microbiology and Biotechnology 2018

Authors and Affiliations

  1. 1.Key Laboratory of Systems Bioengineering (Ministry of Education), School of Chemical Engineering and TechnologyTianjin UniversityTianjinPeople’s Republic of China
  2. 2.College of BiotechnologyTianjin University of Science and TechnologyTianjinPeople’s Republic of China
  3. 3.SynBio Research Platform, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Tianjin UniversityTianjinPeople’s Republic of China

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