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Homogeneous environmental selection mainly determines the denitrifying bacterial community in intensive aquaculture water
Nitrate reduction by napA (encodes periplasmic nitrate reductase) bacteria and nitrous oxide reduction by nosZ (encodes nitrous oxide reductase) bacteria play important roles in nitrogen cycling and removal in intensive aquaculture systems. This study investigated the diversity, dynamics, drivers, a...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2023
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10653326/ https://www.ncbi.nlm.nih.gov/pubmed/38029183 http://dx.doi.org/10.3389/fmicb.2023.1280450 |
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author | Zheng, Xiafei Yan, Zhongneng Zhao, Chenxi He, Lin Lin, Zhihua Liu, Minhai |
author_facet | Zheng, Xiafei Yan, Zhongneng Zhao, Chenxi He, Lin Lin, Zhihua Liu, Minhai |
author_sort | Zheng, Xiafei |
collection | PubMed |
description | Nitrate reduction by napA (encodes periplasmic nitrate reductase) bacteria and nitrous oxide reduction by nosZ (encodes nitrous oxide reductase) bacteria play important roles in nitrogen cycling and removal in intensive aquaculture systems. This study investigated the diversity, dynamics, drivers, and assembly mechanisms of total bacteria as well as napA and nosZ denitrifiers in intensive shrimp aquaculture ponds over a 100-day period. Alpha diversity of the total bacterial community increased significantly over time. In contrast, the alpha diversity of napA and nosZ bacteria remained relatively stable throughout the aquaculture process. The community structure changed markedly across all groups over the culture period. Total nitrogen, phosphate, total phosphorus, and silicate were identified as significant drivers of the denitrifying bacterial communities. Network analysis revealed complex co-occurrence patterns between total, napA, and nosZ bacteria which fluctuated over time. A null model approach showed that, unlike the total community dominated by stochastic factors, napA and nosZ bacteria were primarily governed by deterministic processes. The level of determinism increased with nutrient loading, suggesting the denitrifying community can be manipulated by bioaugmentation. The dominant genus Ruegeria may be a promising candidate for introducing targeted denitrifiers into aquaculture systems to improve nitrogen removal. Overall, this study provides important ecological insights into aerobic and nitrous oxide-reducing denitrifiers in intensive aquaculture, supporting strategies to optimize microbial community structure and function. |
format | Online Article Text |
id | pubmed-10653326 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-106533262023-11-02 Homogeneous environmental selection mainly determines the denitrifying bacterial community in intensive aquaculture water Zheng, Xiafei Yan, Zhongneng Zhao, Chenxi He, Lin Lin, Zhihua Liu, Minhai Front Microbiol Microbiology Nitrate reduction by napA (encodes periplasmic nitrate reductase) bacteria and nitrous oxide reduction by nosZ (encodes nitrous oxide reductase) bacteria play important roles in nitrogen cycling and removal in intensive aquaculture systems. This study investigated the diversity, dynamics, drivers, and assembly mechanisms of total bacteria as well as napA and nosZ denitrifiers in intensive shrimp aquaculture ponds over a 100-day period. Alpha diversity of the total bacterial community increased significantly over time. In contrast, the alpha diversity of napA and nosZ bacteria remained relatively stable throughout the aquaculture process. The community structure changed markedly across all groups over the culture period. Total nitrogen, phosphate, total phosphorus, and silicate were identified as significant drivers of the denitrifying bacterial communities. Network analysis revealed complex co-occurrence patterns between total, napA, and nosZ bacteria which fluctuated over time. A null model approach showed that, unlike the total community dominated by stochastic factors, napA and nosZ bacteria were primarily governed by deterministic processes. The level of determinism increased with nutrient loading, suggesting the denitrifying community can be manipulated by bioaugmentation. The dominant genus Ruegeria may be a promising candidate for introducing targeted denitrifiers into aquaculture systems to improve nitrogen removal. Overall, this study provides important ecological insights into aerobic and nitrous oxide-reducing denitrifiers in intensive aquaculture, supporting strategies to optimize microbial community structure and function. Frontiers Media S.A. 2023-11-02 /pmc/articles/PMC10653326/ /pubmed/38029183 http://dx.doi.org/10.3389/fmicb.2023.1280450 Text en Copyright © 2023 Zheng, Yan, Zhao, He, Lin and Liu. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Microbiology Zheng, Xiafei Yan, Zhongneng Zhao, Chenxi He, Lin Lin, Zhihua Liu, Minhai Homogeneous environmental selection mainly determines the denitrifying bacterial community in intensive aquaculture water |
title | Homogeneous environmental selection mainly determines the denitrifying bacterial community in intensive aquaculture water |
title_full | Homogeneous environmental selection mainly determines the denitrifying bacterial community in intensive aquaculture water |
title_fullStr | Homogeneous environmental selection mainly determines the denitrifying bacterial community in intensive aquaculture water |
title_full_unstemmed | Homogeneous environmental selection mainly determines the denitrifying bacterial community in intensive aquaculture water |
title_short | Homogeneous environmental selection mainly determines the denitrifying bacterial community in intensive aquaculture water |
title_sort | homogeneous environmental selection mainly determines the denitrifying bacterial community in intensive aquaculture water |
topic | Microbiology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10653326/ https://www.ncbi.nlm.nih.gov/pubmed/38029183 http://dx.doi.org/10.3389/fmicb.2023.1280450 |
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