Nitrifiers drive successions of particulate organic matter and microbial community composition in a starved macrocosm
Organic carbon produced by nitrifiers plays an important role in maintaining the microbial metabolism in the aphotic ocean layer with carbon and energy scarcity. However, the contribution of nitrifiers to organic carbon processing remains unclear. To explore how nitrification impacts the material cy...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-12-01
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| Series: | Environment International |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0160412021004013 |
| _version_ | 1818662536709406720 |
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| author | Lianbao Zhang Mingming Chen Xiaowei Chen Jianning Wang Yu Zhang Xilin Xiao Chen Hu Jihua Liu Rui Zhang Dapeng Xu Nianzhi Jiao Yao Zhang |
| author_facet | Lianbao Zhang Mingming Chen Xiaowei Chen Jianning Wang Yu Zhang Xilin Xiao Chen Hu Jihua Liu Rui Zhang Dapeng Xu Nianzhi Jiao Yao Zhang |
| author_sort | Lianbao Zhang |
| collection | DOAJ |
| description | Organic carbon produced by nitrifiers plays an important role in maintaining the microbial metabolism in the aphotic ocean layer with carbon and energy scarcity. However, the contribution of nitrifiers to organic carbon processing remains unclear. To explore how nitrification impacts the material cycle in the starved ecosystem, we set up an ultra-large volume, long-term incubation experiment. Seawater collected from the Halifax coastal ocean was pumped into the Aquatron Tower Tank located at Dalhousie University, Canada, and was incubated under dark conditions for 73 days. The results indicated that the relative abundance of nitrifiers increased and nitrification was strengthened in the dark system where energy and organic carbon were scarce. The importance of nitrogenous compounds in particulate materials increased over the course of the incubation. Correlation analysis showed that the relative abundances of nitrifiers and particulate organic compounds containing nitrogen were significantly and positively correlated. Furthermore, network analysis suggested that metabolic processes related to nitrogenous and aromatic compounds are most important to particle associated bacteria. This study suggests that the nitrifiers could produce a series of organic compounds that result in the alteration of organic matter composition by promoting the degradation of recalcitrant aromatic compounds, which has important implications for organic matter processing in the starved dark ecosystem. |
| first_indexed | 2024-12-17T05:02:31Z |
| format | Article |
| id | doaj.art-f27dce6016be4e1e8a93dede7077fd4e |
| institution | Directory Open Access Journal |
| issn | 0160-4120 |
| language | English |
| last_indexed | 2024-12-17T05:02:31Z |
| publishDate | 2021-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Environment International |
| spelling | doaj.art-f27dce6016be4e1e8a93dede7077fd4e2022-12-21T22:02:31ZengElsevierEnvironment International0160-41202021-12-01157106776Nitrifiers drive successions of particulate organic matter and microbial community composition in a starved macrocosmLianbao Zhang0Mingming Chen1Xiaowei Chen2Jianning Wang3Yu Zhang4Xilin Xiao5Chen Hu6Jihua Liu7Rui Zhang8Dapeng Xu9Nianzhi Jiao10Yao Zhang11State Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen University, Xiamen 361101, ChinaState Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen University, Xiamen 361101, ChinaState Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen University, Xiamen 361101, ChinaState Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen University, Xiamen 361101, ChinaState Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen University, Xiamen 361101, ChinaState Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen University, Xiamen 361101, ChinaState Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen University, Xiamen 361101, ChinaInstitute of Marine Science and Technology, Shandong University, Qinagdao 266237, ChinaState Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen University, Xiamen 361101, ChinaState Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen University, Xiamen 361101, ChinaState Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen University, Xiamen 361101, ChinaState Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen University, Xiamen 361101, China; Corresponding author.Organic carbon produced by nitrifiers plays an important role in maintaining the microbial metabolism in the aphotic ocean layer with carbon and energy scarcity. However, the contribution of nitrifiers to organic carbon processing remains unclear. To explore how nitrification impacts the material cycle in the starved ecosystem, we set up an ultra-large volume, long-term incubation experiment. Seawater collected from the Halifax coastal ocean was pumped into the Aquatron Tower Tank located at Dalhousie University, Canada, and was incubated under dark conditions for 73 days. The results indicated that the relative abundance of nitrifiers increased and nitrification was strengthened in the dark system where energy and organic carbon were scarce. The importance of nitrogenous compounds in particulate materials increased over the course of the incubation. Correlation analysis showed that the relative abundances of nitrifiers and particulate organic compounds containing nitrogen were significantly and positively correlated. Furthermore, network analysis suggested that metabolic processes related to nitrogenous and aromatic compounds are most important to particle associated bacteria. This study suggests that the nitrifiers could produce a series of organic compounds that result in the alteration of organic matter composition by promoting the degradation of recalcitrant aromatic compounds, which has important implications for organic matter processing in the starved dark ecosystem.http://www.sciencedirect.com/science/article/pii/S0160412021004013NitrifiersNitrificationParticulate organic matterNitrogenous compoundsAromatic compoundsStarved dark ecosystem |
| spellingShingle | Lianbao Zhang Mingming Chen Xiaowei Chen Jianning Wang Yu Zhang Xilin Xiao Chen Hu Jihua Liu Rui Zhang Dapeng Xu Nianzhi Jiao Yao Zhang Nitrifiers drive successions of particulate organic matter and microbial community composition in a starved macrocosm Environment International Nitrifiers Nitrification Particulate organic matter Nitrogenous compounds Aromatic compounds Starved dark ecosystem |
| title | Nitrifiers drive successions of particulate organic matter and microbial community composition in a starved macrocosm |
| title_full | Nitrifiers drive successions of particulate organic matter and microbial community composition in a starved macrocosm |
| title_fullStr | Nitrifiers drive successions of particulate organic matter and microbial community composition in a starved macrocosm |
| title_full_unstemmed | Nitrifiers drive successions of particulate organic matter and microbial community composition in a starved macrocosm |
| title_short | Nitrifiers drive successions of particulate organic matter and microbial community composition in a starved macrocosm |
| title_sort | nitrifiers drive successions of particulate organic matter and microbial community composition in a starved macrocosm |
| topic | Nitrifiers Nitrification Particulate organic matter Nitrogenous compounds Aromatic compounds Starved dark ecosystem |
| url | http://www.sciencedirect.com/science/article/pii/S0160412021004013 |
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