Disturbance-based management of ecosystem services and disservices in partial nitritation-anammox biofilms
(2022) In npj Biofilms and Microbiomes 8(47).- Abstract
- The resistance and resilience provided by functional redundancy, a common feature of microbial communities, is not always advantageous. An example is nitrite oxidation in partial nitritation-anammox (PNA) reactors designed for nitrogen removal in wastewater treatment, where suppression of nitrite oxidizers like Nitrospira is sought. In these ecosystems, biofilms provide microhabitats with oxygen gradients, allowing the coexistence of aerobic and anaerobic bacteria. We designed a disturbance experiment where PNA biofilms, treating water from a high-rate activated sludge process, were constantly or intermittently exposed to anaerobic sidestream wastewater, which has been proposed to inhibit nitrite oxidizers. With increasing sidestream... (More)
- The resistance and resilience provided by functional redundancy, a common feature of microbial communities, is not always advantageous. An example is nitrite oxidation in partial nitritation-anammox (PNA) reactors designed for nitrogen removal in wastewater treatment, where suppression of nitrite oxidizers like Nitrospira is sought. In these ecosystems, biofilms provide microhabitats with oxygen gradients, allowing the coexistence of aerobic and anaerobic bacteria. We designed a disturbance experiment where PNA biofilms, treating water from a high-rate activated sludge process, were constantly or intermittently exposed to anaerobic sidestream wastewater, which has been proposed to inhibit nitrite oxidizers. With increasing sidestream exposure we observed decreased abundance, alpha-diversity, functional versatility, and hence functional redundancy, among Nitrospira in the PNA biofilms, while the opposite patterns were observed for anammox bacteria within Brocadia. At the same time, species turnover was observed for aerobic ammonia-oxidizing Nitrosomonas populations. The different exposure regimens were associated with metagenomic assembled genomes of Nitrosomonas, Nitrospira, and Brocadia, encoding genes related to N-cycling, substrate usage, and osmotic stress response, possibly explaining the three different patterns by niche differentiation. These findings imply that disturbances can be used to manage the functional redundancy of biofilm microbiomes in a desirable direction, which should be considered when designing operational strategies for wastewater treatment. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2f0fe0bd-914b-4cb4-9d40-acf727572dc3
- author
- Suarez Rodriguez, Carolina LU ; Sedlacek, Christopher J. ; Gustavsson, David J. I. ; Eiler, Alexander ; Modin, Oskar ; Hermansson, Malte and Persson, Frank
- organization
- publishing date
- 2022-06-08
- type
- Contribution to journal
- publication status
- published
- subject
- in
- npj Biofilms and Microbiomes
- volume
- 8
- issue
- 47
- pages
- 9 pages
- publisher
- Nature Publishing Group
- external identifiers
-
- pmid:35676296
- scopus:85131642065
- ISSN
- 2055-5008
- DOI
- 10.1038/s41522-022-00308-w
- project
- Metagenomic and transkription analyzes of partial nitration-anammox (PNA) processes in wastewater treatment
- language
- English
- LU publication?
- yes
- id
- 2f0fe0bd-914b-4cb4-9d40-acf727572dc3
- date added to LUP
- 2022-06-08 13:39:34
- date last changed
- 2023-10-09 07:46:17
@article{2f0fe0bd-914b-4cb4-9d40-acf727572dc3,
abstract = {{The resistance and resilience provided by functional redundancy, a common feature of microbial communities, is not always advantageous. An example is nitrite oxidation in partial nitritation-anammox (PNA) reactors designed for nitrogen removal in wastewater treatment, where suppression of nitrite oxidizers like Nitrospira is sought. In these ecosystems, biofilms provide microhabitats with oxygen gradients, allowing the coexistence of aerobic and anaerobic bacteria. We designed a disturbance experiment where PNA biofilms, treating water from a high-rate activated sludge process, were constantly or intermittently exposed to anaerobic sidestream wastewater, which has been proposed to inhibit nitrite oxidizers. With increasing sidestream exposure we observed decreased abundance, alpha-diversity, functional versatility, and hence functional redundancy, among Nitrospira in the PNA biofilms, while the opposite patterns were observed for anammox bacteria within Brocadia. At the same time, species turnover was observed for aerobic ammonia-oxidizing Nitrosomonas populations. The different exposure regimens were associated with metagenomic assembled genomes of Nitrosomonas, Nitrospira, and Brocadia, encoding genes related to N-cycling, substrate usage, and osmotic stress response, possibly explaining the three different patterns by niche differentiation. These findings imply that disturbances can be used to manage the functional redundancy of biofilm microbiomes in a desirable direction, which should be considered when designing operational strategies for wastewater treatment.}},
author = {{Suarez Rodriguez, Carolina and Sedlacek, Christopher J. and Gustavsson, David J. I. and Eiler, Alexander and Modin, Oskar and Hermansson, Malte and Persson, Frank}},
issn = {{2055-5008}},
language = {{eng}},
month = {{06}},
number = {{47}},
publisher = {{Nature Publishing Group}},
series = {{npj Biofilms and Microbiomes}},
title = {{Disturbance-based management of ecosystem services and disservices in partial nitritation-anammox biofilms}},
url = {{http://dx.doi.org/10.1038/s41522-022-00308-w}},
doi = {{10.1038/s41522-022-00308-w}},
volume = {{8}},
year = {{2022}},
}