Spatial variation in bacterial community in natural wetland‐river‐sea ecosystems

Hong-xia, Zhang; Zheng, Shiling; Ding, Jiawang; Wang, Oumei; Liu, Fanghua

doi:10.1002/jobm.201700041

Cited by 36 publications

(24 citation statements)

References 45 publications

(53 reference statements)

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“…Temporal and spatial variations in microbial biodiversity have been previously observed in natural wetlands [9,31,35] and constructed wetlands [4,14,30,32], but these studies have mostly emphasized soils [4,9,14,31,32], sediments [9,35] and rhizospheres [30]. The present study revealed the temporal and spatial dynamics of bacterial and archaeal richness, diversity and evenness in the water of an estuarine wetland.…”

Section: Distinct Seasonal Dynamics Of Planktonic Bacterial and Archasupporting

confidence: 52%

Planktonic Bacterial and Archaeal Communities in an Artificially Irrigated Estuarine Wetland: Diversity, Distribution, and Responses to Environmental Parameters

et al. 2020

Microorganisms

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Bacterial and archaeal communities play important roles in wetland ecosystems. Although the microbial communities in the soils and sediments of wetlands have been studied extensively, the comprehensive distributions of planktonic bacterial and archaeal communities and their responses to environmental variables in wetlands remain poorly understood. The present study investigated the spatiotemporal characteristics of the bacterial and archaeal communities in the water of an artificially irrigated estuarine wetland of the Liaohe River, China, explored whether the wetland effluent changed the bacterial and archaeal communities in the Liaohe River, and evaluated the driving environmental factors. Within the study, 16S rRNA quantitative PCR methods and MiSeq high-throughput sequencing were used. The bacterial and archaeal 16S rRNA gene abundances showed significant temporal variation. Meanwhile, the bacterial and archaeal structures showed temporal but not spatial variation in the wetland and did not change in the Liaohe River after wetland drainage. Moreover, the bacterial communities tended to have higher diversity in the wetland water in summer and in the scarce zone, while a relatively higher diversity of archaeal communities was found in autumn and in the intensive zone. DO, pH and PO4-P were proven to be the essential environmental parameters shaping the planktonic bacterial and archaeal community structures in the Liaohe River estuarine wetland (LEW). The LEW had a high potential for methanogenesis, which could be reflected by the composition of the microbial communities.

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Section: Distinct Seasonal Dynamics Of Planktonic Bacterial and Archasupporting

confidence: 52%

Planktonic Bacterial and Archaeal Communities in an Artificially Irrigated Estuarine Wetland: Diversity, Distribution, and Responses to Environmental Parameters

et al. 2020

Microorganisms

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“…4b). Primary examples included the genera Dechloromonas and Hydrogenophaga which are reported to be autohydrogenotrophic denitrifiers (Zhang et al, 2009b;Zhang et al, 2017b) and Geobacter which promotes the reduction of V(V) (Ortiz-Bernad et al, 2004). Enriched Nitrospira, Ideonella and Methyloversatilis took part in nitrogen cycling (Shi et al, 2017;Pepe-Ranney et al, 2015;Baytshtok et al, 2009).…”

Section: Microbial Communities and Mechanismsmentioning

confidence: 99%

Synchronous microbial vanadium (V) reduction and denitrification in groundwater using hydrogen as the sole electron donor

et al. 2018

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Groundwater co-contaminated by vanadium (V) (V(V)) and nitrate requires efficient remediation to prevent adverse environmental impacts. However, little is known about simultaneous bio-reductions of V(V) and nitrate supported by gaseous electron donors in aquifers. This study is among the first to examine microbial V(V) reduction and denitrification with hydrogen as the sole electron donor. V(V) removal efficiency of 91.0 ± 3.2% was achieved in test bioreactors within 7 d, with synchronous, complete removal of nitrate. V(V) was reduced to V(IV), which precipitated naturally under near-neutral conditions, and nitrate tended to be converted to nitrogen, both of which processes helped to purify the groundwater. Volatile fatty acids (VFAs) were produced from hydrogen oxidation. High-throughput 16S rRNA gene sequencing and metagenomic analyses revealed the evolutionary behavior of microbial communities and functional genes. The genera Dechloromonas and Hydrogenophaga promoted bio-reductions of V(V) and nitrate directly coupled to hydrogen oxidation. Enriched Geobacter and denitrifiers also indicated synergistic mechanism, with VFAs acting as organic carbon sources for heterotrophically functional bacteria while reducing V(V) and nitrate. These findings are likely to be useful in revealing biogeochemical fates of V(V) and nitrate in aquifer and developing technology for removing them simultaneously from groundwater.

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“…It is also has the second largest sediment load flux to the ocean of any river (Poulton and Raiswell 2002;Pan et al 2013). Previous studies (Liu et al 2003;Qiao et al 2007;Gong et al 2015;Sheng et al 2015;Zhang et al 2017) have shown that the concentrations of ferrous iron (Fe(II)), ferric iron (Fe(III)), total iron (Fe), and ammonium (NH 4 + -N) were higher in the coastal marine sediment than in the Yellow River sediment, whereas the concentration of nitrate (NO 3 − -N) was higher in the riverine sediment than in coastal marine sediment. Patterns of IRB abundance and diversity can indicate their contribution to the biogeochemical cycles, while changes in community structures are associated with spatial variations in nutrients [i.e.,NO 3 − -N, NH 4 + -N, Fe(II), Fe(III)] in different habitats.…”

Section: Introductionmentioning

confidence: 95%

“…Salinity and pH in the overlying water at each site were measured with an electronic probe (Hydrolab MS5, HACH, USA). Nitrate (NO 3 − -N), ammonium (NH 4 + -N), total organic carbon (TOC) and total nitrogen (TN) in sediment samples, and the concentration of sulfate (SO 4 2− ) in the sediment pore waters were determined, as described in Zhang et al (2017). Dissolved ferrous iron (Fe(II)) was measured using a ferrozine-based assay (Lovley and Phillips 1987;Stookey 1970).…”

Section: Chemical Analysismentioning

confidence: 99%

“…Here, there are steep gradients in iron, nitrogen, sulfur, oxygen, and other elements (MacDonald et al 2014). The variable river flow may result in these environments having a high variability in the concentrations of electron acceptors and electron donors (Zhang et al 2017), which are the main controlling factors of IRB community structure. These gradients, which are associated with water movement, may affect the iron-reducing bacterial community structure and their biogeochemical processes.…”

Section: Introductionmentioning

confidence: 99%

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The differentiation of iron-reducing bacterial community and iron-reduction activity between riverine and marine sediments in the Yellow River estuary

Zhang

Liu

Zheng

et al. 2019

Mar Life Sci Technol

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Rivers are the primary contributors of iron and other elements to the global oceans. Iron-reducing bacteria play an important biogeochemical role in coupling the iron and carbon redox cycles. However, the extent of changes in community structures and iron-reduction activities of iron-reducing bacteria in riverine and coastal marine sediments remains unclear. This study presents information on the spatial patterns and relative abundance of iron-reducing bacteria in sediments of the Yellow River estuary and the adjacent Bohai Sea. High-throughput sequencing of bacterial 16S rRNA found that the highest relative abundances and diversities were from the estuary (Yellow River-Bohai Sea mixing zone). Pseudomonas, Thiobacillus, Geobacter, Rhodoferax, and Clostridium were the most abundant putative iron-reducing bacteria genera in the sediments of the Yellow River. Vibrio, Shewanella, and Thiobacillus were the most abundant in the sediments of the Bohai Sea. The putative iron-reducing bacterial community was positively correlated with the concentrations of total nitrogen and ammonium in coastal marine sediments, and was significantly correlated with the concentration of nitrate in river sediments. The riverine sediments, with a more diverse iron-reducing bacterial community, exhibited increased activity of Fe(III) reduction in enrichment cultures. The estuary-wide high abundance of putative iron-reducing bacteria suggests that the effect of river-sea interaction on bacterial distribution patterns is high. The results of this study will help the understanding of the biogeochemical cycling of iron in riverine and coastal marine environments. Keywords Iron-reducing bacteria • River • Coastal sea • River-sea interaction Edited by Chengchao Chen.

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Spatial variation in bacterial community in natural wetland‐river‐sea ecosystems

Cited by 36 publications

References 45 publications

Planktonic Bacterial and Archaeal Communities in an Artificially Irrigated Estuarine Wetland: Diversity, Distribution, and Responses to Environmental Parameters

Planktonic Bacterial and Archaeal Communities in an Artificially Irrigated Estuarine Wetland: Diversity, Distribution, and Responses to Environmental Parameters

Synchronous microbial vanadium (V) reduction and denitrification in groundwater using hydrogen as the sole electron donor

The differentiation of iron-reducing bacterial community and iron-reduction activity between riverine and marine sediments in the Yellow River estuary

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