Dredging alleviates cyanobacterial blooms by weakening diversity maintenance of bacterioplankton community

Wan, Wenjie; Gadd, Geoffrey M.; Gu, Ji‐Dong; He, Donglan; Liu, Wenzhi; Yuan, Wenke; Ye, Luping; Yang, Yuyi

doi:10.1016/j.watres.2021.117449

Cited by 36 publications

(35 citation statements)

References 55 publications

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“…The structure and diversity of rhizosphere microbial communities were analyzed in R (Text S2). Community assembly processes of rhizosphere microbes were assessed on the basis of the neutral model and the null model. , FAPROTAX (functional annotation of prokaryotic taxa) was applied to annotate OTUs to determine ecologically relevant functions. Structural equation modeling was applied to analyze the interconnection system among plant growth, sediment properties, community assembly, community diversity, and community function by employing IBM SPSS Amos version 26.…”

Section: Methodsmentioning

confidence: 99%

“…The structure and diversity of rhizosphere microbial communities were analyzed in R (Text S2). 24 Community assembly processes of rhizosphere microbes were assessed on the basis of the neutral model and the null model. 25,26 FAPROTAX (functional annotation of prokaryotic taxa) was applied to annotate OTUs to determine ecologically relevant functions.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

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Microbiological Processes of Submicrometer Plastics Affecting Submerged Plant Growth in a Chronic Exposure Microcosm

Lin

Liu

et al. 2022

Environ. Sci. Technol. Lett.

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Laboratory microcosms were designed to investigate the chronic influence of sedimental submicrometer plastics (sMPs) on the growth of an aquatic submerged plant, Vallisneria denseserrulata, and the involved microbiological processes. A dose− response experiment (0−1000 μg/g) showed that the growth of V. denseserrulata was not affected by 8-week exposure to sedimental sMPs (100 and 1000 nm) until the dose reached 1000 μg/g (i.e., 0.1% w/w) in wet sediment. The observed-effect dosage of 0.1% w/w sMPs significantly suppressed the plant height and biomass of V. denseserrulata by 19.19−22.26% and 10.81−15.80%, respectively. Changes in rhizosphere microbial community structure were detected under the observed-effect dosage, with relatively higher community diversity and weaker conflicting interaction. Sedimental sMPs decreased the stochasticity ratio of rhizosphere microbial community assembly by 11.0−27.7% compared with the control group. Furthermore, functional analysis showed that the ecological processes related to the carbon and nitrogen cycle were suppressed at the observed-effect dosage, among which phototrophy, nitrogen fixation, and nitrate reduction were significantly decreased by 68.30%, 23.56%, and 17.59%, respectively. Our results revealed the responses of an aquatic plant to sedimental sMPs exposures, and the adverse impacts of sMPs were associated with the ecological assembly processes of the rhizosphere microbial community.

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Section: Methodsmentioning

confidence: 99%

Section: ■ Materials and Methodsmentioning

confidence: 99%

Microbiological Processes of Submicrometer Plastics Affecting Submerged Plant Growth in a Chronic Exposure Microcosm

Lin

Liu

et al. 2022

Environ. Sci. Technol. Lett.

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“…Deterministic processes refer to nonrandom and the mechanisms based on niche involving environmental filtering and interspecific interactions (promotion, competition, reciprocity, and predation;Stegen et al, 2012). These factors form microbial environmental fitness and largely decide the composition and abundance of microbial (Tang et al, 2020;Wan et al, 2021). In contrast, the neutral theory emphasizes that the stochastic process mainly controls the microbial community assembly, including ecological drift, random speciation, death, and dispersal events (Chase and Myers, 2011).…”

Section: Introductionmentioning

confidence: 99%

Seasonal succession of microbial community co-occurrence patterns and community assembly mechanism in coal mining subsidence lakes

Fang

Fan

et al. 2023

Front. Microbiol.

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Coal mining subsidence lakes are classic hydrologic characteristics created by underground coal mining and represent severe anthropogenic disturbances and environmental challenges. However, the assembly mechanisms and diversity of microbial communities shaped by such environments are poorly understood yet. In this study, we explored aquatic bacterial community diversity and ecological assembly processes in subsidence lakes during winter and summer using 16S rRNA gene sequencing. We observed that clear bacterial community structure was driven by seasonality more than by habitat, and the α-diversity and functional diversity of the bacterial community in summer were significantly higher than in winter (p < 0.001). Canonical correspondence analysis indicated that temperature and chlorophyll-a were the most crucial contributing factors influencing the community season variations in subsidence lakes. Specifically, temperature and chlorophyll-a explained 18.26 and 14.69% of the community season variation, respectively. The bacterial community variation was driven by deterministic processes in winter but dominated by stochastic processes in summer. Compared to winter, the network of bacterial communities in summer exhibited a higher average degree, modularity, and keystone taxa (hubs and connectors in a network), thereby forming a highly complex and stable community structure. These results illustrate the clear season heterogeneity of bacterial communities in subsidence lakes and provide new insights into revealing the effects of seasonal succession on microbial assembly processes in coal mining subsidence lake ecosystems.

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“…In fact, the environmental moderators of soil microbial community assembly processes have been widely examined in numerous ecosystems (Delgado-Baquerizo et al, 2020;Ni et al, 2021). Studies have reported that community assembly processes of soil microbes are influenced by different environmental variables, such as aridity, temperature, salinity, soil pH, and nutrients (Zhang et al, 2019;Jiao and Lu, 2020a;Wan et al, 2021), and their relative influence depends on soil microbial taxa, ecosystem types, and inquiry scales. As a particular component of dryland ecosystems, dryland montane forests are mainly distributed in high-elevation regions.…”

Section: Introductionmentioning

confidence: 99%

“…Our previous studies have observed that soil pH and temperature rather than aridity drive the assembly processes of abundant and rare bacteria in dryland montane forests (Wang et al, 2021b). More importantly, studies on agricultural ecosystems and wetlands have demonstrated that divergent environmental factors mediate the assembly processes of abundant and rare fungi (Jiao and Lu, 2020a;Wan et al, 2021). Therefore, exploring the foremost drivers of soil fungal assembly processes in dryland montane forests may provide new evidence for fundamental mechanisms generating and maintaining biodiversity in drylands.…”

Section: Introductionmentioning

confidence: 99%

Dispersal limitation dominates the community assembly of abundant and rare fungi in dryland montane forests

Wang

et al. 2022

Front. Microbiol.

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The assembly mechanisms and drivers of abundant and rare fungi in dryland montane forest soils remain underexplored. Therefore, in this study, we compared the distribution patterns of abundant and rare fungi and explored the factors determining their assembly processes in a dryland montane forest in China. Stronger distance-decay relationships (DDRs) were found in abundant sub-communities than in rare sub-communities. In addition, abundant fungi exhibited greater presence and wider habitat niche breadth than rare fungi. Both the null model and variation partitioning analysis indicated that dispersal limitation and environmental selection work together to govern both abundant and rare fungal assembly, while dispersal limitation plays a dominant role. Meanwhile, the relative influence of dispersal limitation and environmental selection varied between abundant and rare sub-communities, where dispersal limitation showed greater dominance in abundant fungal assembly. Mantel tests demonstrated that soil pH and phosphorus played critical roles in mediating abundant and rare fungi assembly processes, respectively. Our findings highlight that the distinct biogeographic patterns of abundant and rare fungi are driven by different assembly mechanisms, and the assembly processes of abundant and rare fungi are determined by diverse ecological drivers in dryland montane forest soils.

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Dredging alleviates cyanobacterial blooms by weakening diversity maintenance of bacterioplankton community

Cited by 36 publications

References 55 publications

Microbiological Processes of Submicrometer Plastics Affecting Submerged Plant Growth in a Chronic Exposure Microcosm

Microbiological Processes of Submicrometer Plastics Affecting Submerged Plant Growth in a Chronic Exposure Microcosm

Seasonal succession of microbial community co-occurrence patterns and community assembly mechanism in coal mining subsidence lakes

Dispersal limitation dominates the community assembly of abundant and rare fungi in dryland montane forests

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