Next Article in Journal
Effects of Biochar Addition on Rice Growth and Yield under Water-Saving Irrigation
Next Article in Special Issue
Selective Removal of Hexavalent Chromium from Wastewater by Rice Husk: Kinetic, Isotherm and Spectroscopic Investigation
Previous Article in Journal
Adsorption Performance of Modified Fly Ash for Copper Ion Removal from Aqueous Solution
Previous Article in Special Issue
An Overview of Per- and Polyfluoroalkyl Substances (PFAS) in the Environment: Source, Fate, Risk and Regulations
Open AccessArticle

Cometabolism of the Superphylum Patescibacteria with Anammox Bacteria in a Long-Term Freshwater Anammox Column Reactor

1
Department of Civil and Environmental Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima 739-8527, Japan
2
Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 2-17-2-1 Tsukisamu-Higashi, Toyohira-ku, Sapporo, Hokkaido 062-8517, Japan
3
Program of Biotechnology, Graduate School of Integrated Sciences for Life, Hiroshima University, 1-3-1 Kagamiyama, Higashihiroshima 739-8530, Japan
*
Author to whom correspondence should be addressed.
Water 2021, 13(2), 208; https://doi.org/10.3390/w13020208
Received: 9 December 2020 / Revised: 14 January 2021 / Accepted: 14 January 2021 / Published: 16 January 2021
(This article belongs to the Special Issue Wastewater Treatment: Current and Future Techniques)
Although the anaerobic ammonium oxidation (anammox) process has attracted attention regarding its application in ammonia wastewater treatment based on its efficiency, the physiological characteristics of anammox bacteria remain unclear because of the lack of pure-culture representatives. The coexistence of heterotrophic bacteria has often been observed in anammox reactors, even in those fed with synthetic inorganic nutrient medium. In this study, we recovered 37 draft genome bins from a long-term-operated anammox column reactor and predicted the metabolic pathway of coexisting bacteria, especially Patescibacteria (also known as Candidate phyla radiation). Genes related to the nitrogen cycle were not detected in Patescibacterial bins, whereas nitrite, nitrate, and nitrous oxide-related genes were identified in most of the other bacteria. The pathway predicted for Patescibacteria suggests the lack of nitrogen marker genes and its ability to utilize poly-N-acetylglucosamine produced by dominant anammox bacteria. Coexisting Patescibacteria may play an ecological role in providing lactate and formate to other coexisting bacteria, supporting growth in the anammox reactor. Patescibacteria-centric coexisting bacteria, which produce anammox substrates and scavenge organic compounds produced within the anammox reactor, might be essential for the anammox ecosystem. View Full-Text
Keywords: anaerobic ammonium oxidation (anammox); Patescibacteria; Candidate phyla radiation; Candidatus Brocadia sinica; Candidatus Jettenia caeni; metagenomic analysis; biological nitrogen removal; wastewater treatment anaerobic ammonium oxidation (anammox); Patescibacteria; Candidate phyla radiation; Candidatus Brocadia sinica; Candidatus Jettenia caeni; metagenomic analysis; biological nitrogen removal; wastewater treatment
Show Figures

Figure 1

MDPI and ACS Style

Hosokawa, S.; Kuroda, K.; Narihiro, T.; Aoi, Y.; Ozaki, N.; Ohashi, A.; Kindaichi, T. Cometabolism of the Superphylum Patescibacteria with Anammox Bacteria in a Long-Term Freshwater Anammox Column Reactor. Water 2021, 13, 208. https://doi.org/10.3390/w13020208

AMA Style

Hosokawa S, Kuroda K, Narihiro T, Aoi Y, Ozaki N, Ohashi A, Kindaichi T. Cometabolism of the Superphylum Patescibacteria with Anammox Bacteria in a Long-Term Freshwater Anammox Column Reactor. Water. 2021; 13(2):208. https://doi.org/10.3390/w13020208

Chicago/Turabian Style

Hosokawa, Suguru; Kuroda, Kyohei; Narihiro, Takashi; Aoi, Yoshiteru; Ozaki, Noriatsu; Ohashi, Akiyoshi; Kindaichi, Tomonori. 2021. "Cometabolism of the Superphylum Patescibacteria with Anammox Bacteria in a Long-Term Freshwater Anammox Column Reactor" Water 13, no. 2: 208. https://doi.org/10.3390/w13020208

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop