The assembly process and co-occurrence network of soil microbial community driven by cadmium in volcanic ecosystem

Resources Environment and Sustainability, Год журнала: 2024, Номер 17, С. 100164 - 100164

Опубликована: Авг. 8, 2024

Heavy metal (HM) contamination affects the composition and structure of soil microbial communities, but there are few studies on assembly process co-occurrence network community succession driven by Cd in volcanic ecosystem. To address this gap knowledge, we collected analyzed samples from Nvshan Volcanic area to understand characteristics primary (PS) secondary (SS). We found that was contaminated with different levels (PS > SS), resulting obvious heterogeneity microorganisms. The absolute abundance bacteria (16S rRNA gene copies) varied significantly between two successions (P < 0.0001). networks analysis showed number nodes bacterial communities lower PS compared SS (1002 vs. 1004), indicating heavy would reduce communities. Compared PS, exhibited stronger competitiveness (positive: negative, P/N: 25.69 64.22), whereas fungal were closer symbiotic relationships (positive/negative, 15.85 14.29). neutral model (NCM) revealed stochastic processes predominantly governed (bacterial R2: 0.657, 0.686). Mantel test negatively associated cbbLR, amoA, phoD. results Sankey diagram fungi more resistant than (27 13). This study contributes understanding under stress identifying strains potential for remediation.

Язык: Английский

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Response of Soil Bacteria to Short-Term Nitrogen Addition in Nutrient-Poor Areas

Microorganisms, Год журнала: 2025, Номер 13(1), С. 56 - 56

Опубликована: Янв. 1, 2025

Increasing nitrogen (N) addition induces soil nutrient imbalances and is recognized as a major regulator of microbial communities. However, how bacterial abundance, diversity, community composition respond to exogenous N in nutrient-poor generally N-limited regions remains understudied. In this study, we investigated the effects short-term additions on communities using quantitative polymerase chain reaction (PCR) Illumina Miseq sequencing an situ field experiment. The results showed that low increased observed species (Sobs) community, with addition, Sobs bacteria gradually decreased, especially unique OTUs. relative abundance Proteobacteria, Actinobacteria, Gemmatimonadetes increasing whereas Chloroflexi Firmicutes decreased. Soil properties play important role structure at phylum or genus levels. Short-term proportion nodes from Actinobacteria Proteobacteria co-occurrence network enhanced stability network. may constructing Our study aims explore composition, areas caused by ecological disturbances.

Язык: Английский

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The rapid fermentation of Euphausia superba sauce and revealing of the relationship between key flavor compounds and core microorganisms

Food Research International, Год журнала: 2025, Номер 203, С. 115828 - 115828

Опубликована: Янв. 22, 2025

Язык: Английский

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Biochar remediated algae debris polluted surface sediment: Microbial community inhibited methane fluxes and improved water quality

Process Safety and Environmental Protection, Год журнала: 2025, Номер unknown, С. 106931 - 106931

Опубликована: Фев. 1, 2025

Язык: Английский

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Unveiling Microbial Dynamics: How Forest Aging Shapes the Microbial Communities of Pinus massoniana

Ecology and Evolution, Год журнала: 2025, Номер 15(3)

Опубликована: Март 1, 2025

ABSTRACT Plants host diverse microbial communities essential for nutrient acquisition, growth, and responses to biotic abiotic stresses. Despite their importance, the variation stability of these during forest succession remain poorly understood. This study investigated in Pinus massoniana forests at different stand ages (12, 22, 30, 40 years). Results showed that phyllosphere roots P. harbor communities, which shift dynamically with aging. Bacterial species diversity consistently surpassed fungal across all habitats. Forest aging significantly influenced alpha soil microbes, whereas root‐associated remained stable. Co‐occurrence network analysis revealed bacterial formed more complex networks than exhibited greater stability. Functional annotation confirmed were functionally stable, predominantly involving metabolic processes. In contrast, endophytes dominated fungi, while ectomycorrhizal fungi prevalent root communities. Environmental factors, including total nitrogen, phosphorus, available potassium, pH, emerged as key drivers dynamics. These findings provide novel insights into differing aging, highlighting critical role ecological niches shaping

Язык: Английский

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The role of vegetation restoration in shaping the structure and stability of soil bacterial community of alpine mining regions

Plant and Soil, Год журнала: 2025, Номер unknown

Опубликована: Март 18, 2025

Язык: Английский

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The colonization of the arbuscular mycorrhizal fungus Rhizophagus irregularis affects the diversity and network structure of root endophytic bacteria in maize

Scientia Horticulturae, Год журнала: 2023, Номер 326, С. 112774 - 112774

Опубликована: Дек. 21, 2023

Язык: Английский

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Difference in microbial community structure along a gradient of crater altitude: insights from the Nushan volcano

Applied and Environmental Microbiology, Год журнала: 2024, Номер 90(8)

Опубликована: Июль 19, 2024

The variation in the soil microbial community along altitude gradient has been widely documented. However, structure and function of communities distributed crater still need to be determined. We gathered specimens from different elevations within Nushan volcano bridge this knowledge gap. investigated bacteria fungi soil. It is noteworthy that alpha diversity peaks middle crater. network analysis shows bacterial (nodes 760 vs 613 601) fungal 328 224 400) are most stable at bottom top crater, respectively. Furthermore, exhibited a decline, followed by an increase across varying altitudes. core microorganisms displayed highest correlation with pH alkaline phosphatase (AP, as determined through redundancy (RDA) Mantel tests for analysis. higher number microorganisms, while demonstrate greater susceptibility environmental factors. In conclusion, we utilized Illumina sequencing techniques assess disparities soil.IMPORTANCEThese findings serve foundation future investigations on present volcanic

Язык: Английский

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Effects of volcanic environment on Setaria viridis rhizospheric soil microbial keystone taxa and ecosystem multifunctionality

Environmental Research, Год журнала: 2024, Номер unknown, С. 120262 - 120262

Опубликована: Окт. 1, 2024

Язык: Английский

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Mixed plantation forest litter improves microbial nitrogen transformation by increasing nitrogen metabolism related genes and key bacterial taxa in northern China

Land Degradation and Development, Год журнала: 2024, Номер 35(8), С. 2840 - 2856

Опубликована: Март 17, 2024

Abstract Nitrogen (N) metabolism is a key metabolic pathway of nutrient cycling in forest ecosystems. However, the mechanisms by which mixed plantation litter improves microbial N transformation are poorly understood. Thus, we investigated characteristics, metabolism‐related genes, and modules soil three types forests: coniferous (CP forest), broadleaf (BP forests (MCBP forest). Results indicated that total (TN), hydrolysable organic (THON), percentage values NH 4 + ‐N/TN NO 3 − BP MCBP were higher than those CP litter, was attributed to increase abundance fixation genes dissimilatory nitrate reduction genes. The increased bacterial number diversity, taxa. Bacterial 1 2 identified, consisting Acidobacteria, Actinobacteria, Chloroflexi, Nitrospirae, Proteobacteria, Gemmatimonadetes, while archaeal module 5 also module, comprising Thaumarchaeota Euryarchaeota. Nutrients limiting factor decomposition further influencing enzymes. Therefore, during northern China.

Язык: Английский

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