Mechanisms and implications of bacterial–fungal competition for soil resources

The ISME Journal, Journal Year: 2024, Volume and Issue: 18(1)

Published: Jan. 1, 2024

Abstract Elucidating complex interactions between bacteria and fungi that determine microbial community structure, composition, functions in soil, as well regulate carbon (C) nutrient fluxes, is crucial to understand biogeochemical cycles. Among the various interactions, competition for resources main factor determining adaptation niche differentiation these two big groups soil. This because C energy limitations growth are a rule rather than an exception. Here, we review demands of fungi—the major kingdoms soil—the mechanisms their other resources, leading differentiation, global change impacts on this competition. The normalized utilization preference showed 1.4–5 times more efficient uptake simple organic compounds substrates, whereas 1.1–4.1 effective utilizing compounds. Accordingly, strongly outcompete while take advantage Bacteria also compete with products released during degradation substrates. Based specifics, differentiated spatial, temporal, chemical niches will increase under five changes including elevated CO2, N deposition, soil acidification, warming, drought. Elevated warming bacterial dominance, acidification drought fungal competitiveness.

Language: Английский

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Microbial carbon and phosphorus metabolism regulated by C:N:P stoichiometry stimulates organic carbon accumulation in agricultural soils

Soil and Tillage Research, Journal Year: 2024, Volume and Issue: 242, P. 106152 - 106152

Published: May 14, 2024

Language: Английский

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Emerging multiscale insights on microbial carbon use efficiency in the land carbon cycle

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Sept. 13, 2024

Microbial carbon use efficiency (CUE) affects the fate and storage of in terrestrial ecosystems, but its global importance remains uncertain. Accurately modeling predicting CUE on a scale is challenging due to inconsistencies measurement techniques complex interactions climatic, edaphic, biological factors across scales. The link between microbial soil organic relies stabilization necromass within aggregates or association with minerals, necessitating an integration processes approaches. In this perspective, we propose comprehensive framework that integrates diverse data sources, ranging from genomic information traditional assessments, refine cycle models by incorporating variations CUE, thereby enhancing our understanding contribution cycling.

Language: Английский

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Microbial-driven mechanisms for the effects of heavy metals on soil organic carbon storage: A global analysis

Environment International, Journal Year: 2024, Volume and Issue: unknown, P. 108467 - 108467

Published: Jan. 1, 2024

Heavy metal (HM) enrichment is closely related to soil organic carbon (SOC) pools in terrestrial ecosystems, which are deeply intertwined with microbial processes. However, the influence of HMs on SOC remains contentious terms magnitude and direction. A global analysis 155 studies was conducted integrate synergistic responses microorganisms HM enrichment. significant increase 13.6 % content observed soils exposed HMs. The response primarily depends properties habitat conditions, particularly initial content, mean annual precipitation (MAP), pH, temperature (MAT). presence resulted decreases activities key enzymes, including 31.9 for dehydrogenase, 24.8 β-glucosidase, 35.8 invertase, 24.3 cellulose. also exerted inhibitory effects biomass (MBC) (26.6 %), respiration (MR) (19.7 bacterial Shannon index (3.13 %) but elevated metabolic quotient (qCO2) (20.6 %). enrichment-induced changes exhibited positive correlations MBC (r = 0.70, p < 0.01) qCO2 0.50, 0.01), while it negatively associated β-glucosidase activity 0.72, MR 0.39, 0.01). These findings suggest that storage mainly attributable inhibition enzymes under Overall, this meta-analysis highlights habitat-dependent provides a comprehensive evaluation dynamics an HM-rich environment.

Language: Английский

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Limiting Resources Define the Global Pattern of Soil Microbial Carbon Use Efficiency

Advanced Science, Journal Year: 2024, Volume and Issue: unknown

Published: July 18, 2024

Abstract Microbial carbon (C) use efficiency (CUE) delineates the proportion of organic C used by microorganisms for anabolism and ultimately influences amount sequestered in soils. However, key factors controlling CUE remain enigmatic, leading to considerable uncertainty understanding soil retention predicting its responses global change factors. Here, we investigate patterns estimate stoichiometric modeling surface soils natural ecosystems, examine associations with temperature, precipitation, plant‐derived nutrient availability. We found that is determined most limiting resource among these four basic environmental resources within specific climate zones (i.e., tropical, temperate, arid, cold zones). Higher common arid corresponds limitations water, input, while lower observed tropical temperate widespread limitation nutrients (e.g., nitrogen or phosphorus) soil. The contrasting led an apparent increase increasing latitude. resource‐specific dependence implies high latitudes environments may retain less future, as warming increased precipitation can reduce CUE. In contrast, oligotrophic low retention, could be concurrent anthropogenic inputs. findings underscore importance suggest asymmetric across

Language: Английский

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Soil organic carbon loss decreases biodiversity but stimulates multitrophic interactions that promote belowground metabolism

Global Change Biology, Journal Year: 2023, Volume and Issue: 30(1)

Published: Dec. 22, 2023

Abstract Soil organic carbon (SOC) plays an essential role in mediating community structure and metabolic activities of belowground biota. Unraveling the evolution communities their feedback mechanisms on SOC dynamics helps embed ecology soil microbiome into cycling, which serves to improve biodiversity conservation management strategy under global change. Here, croplands with a gradient were used understand how metabolisms decomposition linked diversity, composition, co‐occurrence networks encompassing archaea, bacteria, fungi, protists, invertebrates. As decreased, diversity prokaryotes eukaryotes also but network complexity showed contrasting patterns: increased due intensified niche overlap, while that decreased possibly because greater dispersal limitation owing breakdown macroaggregates. Despite decrease stocks, capacity was enhanced as indicated by enzyme activity enzymatic stoichiometric imbalance. This could, turn, expedite loss through respiration, particularly slow‐cycling pool. The dominantly driven multitrophic negative (competitive predator–prey) associations, fostered stability metacommunity. Interestingly, abiotic conditions including pH, aeration, nutrient exhibited less significant role. Overall, this study reveals need for C resources across levels maintain functionality declining results loss. Our researchers highlight importance integrating biological processes models turnover, agroecosystem functioning face intensifying anthropogenic land‐use climate

Language: Английский

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Enhanced rock weathering increased soil phosphorus availability and altered root phosphorus‐acquisition strategies

Global Change Biology, Journal Year: 2024, Volume and Issue: 30(5)

Published: May 1, 2024

Abstract Enhanced rock weathering (ERW) has been proposed as a measure to enhance the carbon (C)‐sequestration potential and fertility of soils. The effects this practice on soil phosphorus (P) pools general mechanisms affecting microbial P cycling, well plant uptake are not understood. Here, impact ERW availability cycling functional groups root P‐acquisition traits were explored through 2‐year wollastonite field addition experiment in tropical rubber plantation. results show that significantly increased carbon‐use efficiency total concentrations indirectly by enhancing organic mobilization mineralization rhizosheath carboxylates phosphatase, respectively. Also, stimulated activities P‐solubilizing ( gcd , ppa ppx ) mineralizing enzymes phoADN phnAPHLFXIM ), thus contributing inorganic solubilization mineralization. Accompanying increase availability, strategy fine roots changed from do‐it‐yourself acquisition dependence mycorrhizal collaboration release exudates. In addition, direct (such diameter, specific length, colonization rate) may also be related changes pattern belowground investments plants. Our study provides new insight increases carbon‐sequestration forests profoundly affects resource‐use strategies.

Language: Английский

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Temperature and microbial metabolic limitations govern microbial carbon use efficiency in the Tibetan alpine grassland

Applied Soil Ecology, Journal Year: 2025, Volume and Issue: 206, P. 105880 - 105880

Published: Jan. 13, 2025

Language: Английский

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Placing cropping systems under suboptimal phosphorus conditions promotes plant nutrient acquisition and microbial carbon supply without compromising biomass

Soil Biology and Biochemistry, Journal Year: 2025, Volume and Issue: unknown, P. 109753 - 109753

Published: Feb. 1, 2025

Language: Английский

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Deciphering microbial drivers of soil organic matter mineralization in surface and subsurface soil during long-term vegetation succession

Agriculture Ecosystems & Environment, Journal Year: 2024, Volume and Issue: 374, P. 109186 - 109186

Published: July 21, 2024

Language: Английский

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