Long-term metal pollution shifts microbial functional profiles of nitrification and denitrification in agricultural soils

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 830, P. 154732 - 154732

Published: March 26, 2022

Language: Английский

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Resource-dependent biodiversity and potential multi-trophic interactions determine belowground functional trait stability

Microbiome, Journal Year: 2023, Volume and Issue: 11(1)

Published: May 1, 2023

For achieving long-term sustainability of intensive agricultural practices, it is pivotal to understand belowground functional stability as organisms play essential roles in soil biogeochemical cycling. It commonly believed that resource availability critical for controlling the biodiversity and organism interactions ultimately lead stabilization or collapse terrestrial ecosystem functions, but evidence support this belief still limited. Here, we leveraged field experiments from Chinese National Ecosystem Research Network (CERN) two microcosm mimicking high low conditions explore how mediates potential multi-trophic control trait stability.We found practice-induced higher increased cross-trophic over 316% fields, which turn had a greater effect on stability, while made more dependent within trophic biodiversity. This large-scale pattern was confirmed by fine-scale systems, showing microcosms with sufficient nutrient supply increase proportion interactions, were positively associated stability. Resource-driven feedback plant biomass.Our results indicated importance supporting especially when nutrients are sufficient, also suggested ecological benefits fertilization programs modern intensification. Video Abstract.

Language: Английский

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Compared with soil fungal diversity and microbial network complexity, soil bacterial diversity drives soil multifunctionality during the restoration process

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 354, P. 120379 - 120379

Published: Feb. 17, 2024

Language: Английский

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Grassland degradation amplifies the negative effect of nitrogen enrichment on soil microbial community stability

Global Change Biology, Journal Year: 2024, Volume and Issue: 30(3)

Published: March 1, 2024

Abstract Although nitrogen (N) enrichment is known to threaten the temporal stability of aboveground net primary productivity, it remains unclear how alters that belowground microbial abundance and whether its impact can be regulated by grassland degradation. Using data from N experiments at temperate grasslands with no, moderate, severe, extreme degradation degrees, we quantified soil (hereafter ‘microbial community stability’) using ratio mean quantitative PCR standard deviation over 4 years. Both bacterial fungal sharply decreased when input exceeded 30 g m −2 year −1 in non‐degraded grasslands, whereas a reduction this threshold occurred degraded grasslands. Microbial species diversity, asynchrony, associations jointly altered stability. Interestingly, linkages between plant were strengthened suggesting plants microbes might depend on each other keep stable communities harsh environments. Our findings highlighted importance regulating responses provided experimental evidence for understanding relationships

Language: Английский

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Depth‐dependent responses of the soil bacterial community under vegetation restoration in soil erosion areas of southern China

Land Degradation and Development, Journal Year: 2024, Volume and Issue: 35(3), P. 1142 - 1154

Published: Jan. 1, 2024

Abstract Soil bacterial communities play a crucial role in the evaluation of soil ecosystem stability. Vegetation restoration is key determinant areas affected by erosion. However, it remains unclear how structure and diversity vary with depth. In this study, we collected samples from 0 to 10 cm, 20 30 40 cm depths vegetation sites located typical erosion China. We compared analyzed differences community characteristics among different depths, using untreated as controls. Compared areas, abundance bacteria 0–10 10–20 20–30 increased 1.63, 1.04, 1.29 times, respectively. Furthermore, enhanced at depths. organic carbon (OC) was main explanatory factor (53.50%, p = 0.000) for decrease Additionally, after dominant composition shifted Chloroflexi Actinobacteria Proteobacteria 30–40 The were primarily driven total nitrogen (TN) content, which explained up 34.5% variation. conclusion, subsequent management sites, increasing OC TN content can enhance diversity, improve composition, ultimately stability ecosystems.

Language: Английский

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Soil metagenomics reveals the effect of nitrogen on soil microbial communities and nitrogen-cycle functional genes in the rhizosphere of Panax ginseng

Frontiers in Plant Science, Journal Year: 2024, Volume and Issue: 15

Published: Aug. 7, 2024

Nitrogen (N) is the primary essential nutrient for ginseng growth, and a reasonable nitrogen application strategy vital maintaining stability of soil microbial functional communities. However, how microbial-mediated genes involved in cycling rhizosphere respond to addition largely unknown. In this study, metagenomic technology was used study effects different additions (N0: 0, N1: 20, N2: 40 N g/m

Language: Английский

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Effects of fertilizer application on the bacterial community and weathering characteristics of typical purple parent rocks

Frontiers in Microbiology, Journal Year: 2025, Volume and Issue: 15

Published: Jan. 7, 2025

Rock weathering is a fundamental process that shapes Earth's topography, soil formation, and other surface processes. However, the mechanisms underlying influence of fertilizer application on remain poorly understood, especially with respect to bacterial intervention. In this study, purple parent rocks from Shaximiao Group (J2s) Penglaizhen (J3p) were selected investigate effects community characteristics these rock by leaching experiment. The results revealed that: application, when at high levels, greatly altered abundance, diversity composition in weathered products. Through redundancy analysis, decrease pH increases available nutrients (AN AP) resulting identified as key factors driving changes Moreover, promotes physical chemical some extent. This true for J2s. Structural equation model indicated affects through multiple pathways affecting properties (pH, C:N AP), specific genera (IMCC26256, Ramlibacter, Nitrosospira), Our study links products after which plays role controlling predicting dynamic space time. It helpful further understand law human activities

Language: Английский

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Impacts of forest expansion on microbial diversity and community assembly in fragmented mountain ecosystems

Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 120956 - 120956

Published: Jan. 1, 2025

Language: Английский

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Plants and soil biota co‐regulate stability of ecosystem multifunctionality under multiple environmental changes

Ecology, Journal Year: 2025, Volume and Issue: 106(2)

Published: Feb. 1, 2025

The increase in phosphorus (P) and nitrogen (N) inputs, as well soil acidification resulting from multiple environmental changes, has profound effects on the attributes of plant biota communities, ecosystem functions. However, how these community impact multifunctionality (EMF) its stability under changes remains unclear. By integrating datasets over four consecutive years an experiment with enrichments N P a semiarid grassland Mongolian Plateau, we explored (species richness, asynchrony, compositional temporal stability) plants (bacteria, fungi, nematodes) their associations EMF stability. showed opposite responses to nutrient enrichment non-acidification conditions. Soil had more significant effect biota, components stability, than enrichment. decreased both mean EMF, while increased EMF. did not have but positive interactive We also found that richness asynchrony determined co-regulate changes. These findings highlight urgent need protect biodiversity maintain especially for ecosystems undergoing

Language: Английский

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Negative impacts of excessive nitrogen fertilization on the abundance and diversity of diazotrophs in black soil under maize monocropping

Geoderma, Journal Year: 2021, Volume and Issue: 393, P. 114999 - 114999

Published: Feb. 26, 2021

Language: Английский

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