Distinct Intra-lake Heterogeneity of Diazotrophs in a Deep Oligotrophic Mountain Lake

Wang, Lina; Xing, Peng; Li, Huabing; Zhou, Lijun; Wu, Qinglong L.

doi:10.1007/s00248-019-01461-0

Cited by 8 publications

(8 citation statements)

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“…In this study, sequencing of nifH gene revealed that diazotrophs in the sediments of Poyang Lake mainly belonged to Proteobacteria, Euryarchaeota, Cyanobacteria, Bacteroidetes, Firmicutes, Nitrospirae, and Spirochaetes (Figure 3), which have been previously reported to be among the diazotrophic community from Lake Taihu, Lake Fuxian, Dongzhen Reservoir (China) and Pacific Ocean (Yu et al, 2014;Kapili et al, 2020;Wang et al, 2020;Tian et al, 2021a). Consistent with the report on Lake Taihu (Tian et al, 2021a), Proteobacteria was the predominant phylum in the diazotrophic communities from the sediments in this study.…”

Section: Composition Of Diazotrophic Communities In the Sediments Of ...supporting

confidence: 61%

“…Biological nitrogen fixation, a microbial process that converts the reduction of dinitrogen gas (N 2 ) to biologically available ammonium, plays a fundamental role in the primary production of aquatic systems (Vitousek and Howarth, 1991;Arp, 2000;Montoya et al, 2004). Diazotrophs in the aquatic environment are widely distributed among Proteobacteria, Euryarchaeota, Cyanobacteria, Bacteroidetes, and Firmicutes based on the diversity of the nifH gene (Kapili et al, 2020;Wang et al, 2020;Tian et al, 2021a). Diazotrophs capable of fixing molecular nitrogen have been found to be present in the water columns and the sediments of lakes (Zhang and Zhang, 2016;Yao et al, 2018;Wang et al, 2020;Tian et al, 2021a).…”

Section: Introductionmentioning

confidence: 99%

“…Diazotrophs in the aquatic environment are widely distributed among Proteobacteria, Euryarchaeota, Cyanobacteria, Bacteroidetes, and Firmicutes based on the diversity of the nifH gene (Kapili et al, 2020;Wang et al, 2020;Tian et al, 2021a). Diazotrophs capable of fixing molecular nitrogen have been found to be present in the water columns and the sediments of lakes (Zhang and Zhang, 2016;Yao et al, 2018;Wang et al, 2020;Tian et al, 2021a). It is traditionally believed that N 2 -fixing Cyanobacteria are the main diazotrophs in aquatic systems (Yao et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…As mentioned above, WLFs can regulate the release of sediment nutrients in floodplain lakes, and in turn change the nutrient content. Nutrient availability can shape the diazotrophic community in aquatic ecosystems (Weber et al, 2017;Wang et al, 2020;Luo et al, 2021;Tian et al, 2021a;Jabir et al, 2021b). Therefore, elucidating the response of the sediment diazotrophic community to WLFs is of great interest and importance to gain insights into the ecological impacts of WLFs and the nitrogen-cycling processes of the floodplain lake.…”

Section: Introductionmentioning

confidence: 99%

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Diazotrophic community in the sediments of Poyang Lake in response to water level fluctuations

Wu,

Wang,

Chen

et al. 2024

Front. Microbiol.

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Water level fluctuations (WLFs) are typical characteristic of floodplain lakes and dominant forces regulating the structure and function of lacustrine ecosystems. The sediment diazotrophs play important roles in contributing bioavailable nitrogen to the aquatic environment. However, the relationship between the diazotrophic community and WLFs in floodplain lakes is unknown. In this paper, we carried out a comprehensive investigation on the alpha diversity, abundance, composition and co-occurrence network of the sediment diazotrophs during different water level phases in Poyang Lake. There were no regular variation patterns in the alpha diversity and abundance of the sediment diazotrophs with the water level phase transitions. The relative abundance of some diazotrophic phyla (including Alphaproteobacteria, Deltaproteobacteri, Euryarchaeota, and Firmicutes) and genera (including Geobacter, Deferrisoma, Desulfuromonas, Rivicola, Paraburkholderia, Methylophilus, Methanothrix, Methanobacterium, and Clostridium) was found to change with the water level phase transitions. The results of ANOSIM, PerMANOVA, and DCA at the OTU level showed that the diazotrophic community structure in the low water level phase was significantly different from that in the two high water level phases, while there was no significant difference between the two high water level phases. These results indicated that the diazotrophic community was affected by the declining water level in terms of the composition, while the rising water level contributed to the recoveries of the diazotrophic community. The diazotrophs co-occurrence network was disrupted by the declining water level, but it was strengthened by the rising water level. Moreover, redundancy analysis showed that the variation of the diazotrophic community composition was mostly related to sediment total nitrogen (TN) and total phosphorous (TP). Interestingly, the levels of sediment TN and TP were also found to vary with the water level phase transitions. Therefore, it might be speculated that the WLFs may influence the sediment TN and TP, and in turn influence the diazotrophic community composition. These data can contribute to broadening our understanding of the ecological impacts of WLFs and the nitrogen fixation process in floodplain lakes.

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Section: Composition Of Diazotrophic Communities In the Sediments Of ...supporting

confidence: 61%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Diazotrophic community in the sediments of Poyang Lake in response to water level fluctuations

Wu,

Wang,

Chen

et al. 2024

Front. Microbiol.

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“…Cluster III was formed of distantly nif H‐related sequences with members, such as strict anaerobes (e.g., sulfate‐reducing microorganisms, Clostridia), and nif ‐like genes classified as Cluster IV (Zehr et al., 2003). Clusters IV sequences from methanogens were not found in Meiliang Bay but they have been identified in other freshwater habitats, such as the Florida Everglades (a large freshwater wetland) and Fuxian Lake (Bae et al., 2018; Wang et al., 2019). Methanogenesis is not the main anaerobic metabolic pathway in the sediment of the area of cyanobacterial blooms in Lake Taihu (Chen & Jiang, 2016), which was confirmed in laboratory culture experiments (Figure 6).…”

Section: Discussionmentioning

confidence: 99%

Biological Nitrogen Fixation in Sediments of a Cyanobacterial Bloom‐Occurring Bay in One Eutrophic Shallow Lake: Occurrence and Related Environmental Factors

et al. 2021

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The availability of nitrogen affects primary productivity in aquatic environments (McCarthy et al., 2016;Shiozaki et al., 2018). However, excessive nitrogen loading induced by human activities has increased the frequency and duration of harmful cyanobacterial blooms in lake systems (Paerl & Barnard, 2020;Sinha et al., 2017;Wagner et al., 2021). Eutrophication, particularly an increase in the nitrogen load, promotes the proliferation of non-nitrogen-fixing toxic algae (e.g., Microcystis) by replacing the algae in the nitrogen-fixing niche (Deng et al., 2020). Cyanobacterial blooms cause serious water quality problems (Huisman et al., 2018;Paerl & Otten, 2013), such as oxygen depletion and the death of aquatic organisms caused by the degradation of senescent blooms (Rabalais et al., 2010). More importantly, the proliferation of toxic cyanobacteria significantly raises the cyanotoxins exposure risk to humans (Carmichael, 2001;Merel et al., 2013). Improving the water quality of lakes is of great significance to protect water resources.

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Microbial Diversity in the Indian Ocean Sediments: An Insight into the Distribution and Associated Factors

Ambati

Kumar

2022

Curr Microbiol

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Distinct Intra-lake Heterogeneity of Diazotrophs in a Deep Oligotrophic Mountain Lake

Cited by 8 publications

References 62 publications

Diazotrophic community in the sediments of Poyang Lake in response to water level fluctuations

Diazotrophic community in the sediments of Poyang Lake in response to water level fluctuations

Biological Nitrogen Fixation in Sediments of a Cyanobacterial Bloom‐Occurring Bay in One Eutrophic Shallow Lake: Occurrence and Related Environmental Factors

Microbial Diversity in the Indian Ocean Sediments: An Insight into the Distribution and Associated Factors

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