Geographical, climatic, and soil factors control the altitudinal pattern of rhizosphere microbial diversity and its driving effect on root zone soil multifunctionality in mountain ecosystems

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 904, P. 166932 - 166932

Published: Sept. 9, 2023

Shifts in rhizosphere soil microorganisms of dominant plants' response to climate change profoundly impact mountain ecosystem multifunctionality; relatively little is known about the relationship between them and how they depend on long-term environmental drivers. Here, we conducted analyses microbial altitudinal pattern, community assembly, co-occurrence network 6 plants six typical vegetation zones ranging from 1350 2900 m (a.s.l.) Helan Mountains by absolute quantitative sequencing technology, finally related microbiomes root zone multifunctionality ('soil multifunctionality' hereafter), dependence was explored. It found that pattern bacterial fungal diversities differed significantly. Higher more potential interactions Stipa breviflora Carex coninux were at lowest highest altitudes. Bacterial α diversity, identity some taxa, had significant positive or negative effects multifunctionality. The effect sizes diversity greater than those effects. These results indicated balance microbes determines As number phylum level increases, there will be a net gain Our study reveals geographical climatic factors can directly modulate properties thereby affecting driving multifunctionality, points rather fungi being strongly associated with This work has important ecological implications for predicting multiple environment-plant-soil-microorganisms ecosystems respond future change.

Language: Английский

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New insights into carbon mineralization in tropical paddy soil under land use conversion: Coupled roles of soil microbial community, metabolism, and dissolved organic matter chemodiversity

Geoderma, Journal Year: 2023, Volume and Issue: 432, P. 116393 - 116393

Published: Feb. 22, 2023

Although the impact of land conversion on carbon mineralization in paddy soils has received increasing attention, coupled roles soil microdiversity and chemodiversity these processes are largely unknown. To address this issue, use from fields (PF) to vegetable (VF), rice-vegetable rotation (RV), abandoned (AL), were investigated study. The relationships between characteristics microbial community, metabolism physiology dissolved organic matter (DOM) analyzed. After conversion, enhanced AL RV, which 217.49% 183.02% that PF. In contrast, no significant change was observed VF, although anaerobic environment transformed into an aerobic one fungal richness/ diversity increased soil. This because directly regulated by DOM quantity labile carbon, indirectly community. Specifically, largest attributed strongest as had DOC contents, hydrophilic substances (e.g., carboxyl, carbohydrate, amino), abundant eutrophic taxa Actinobacteria Proteobacteria). VF mainly related more condensed aromatics oligotrophic microbes, fewer soil, resulting dominance recalcitrant carbon. also prevailed RV. However, RV showed moderate due having proper with high bioavailability. Collectively, results provide molecular insights a micro-chemodiversity perspective, highlights importance nutrient supply strategy.

Language: Английский

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Intercropping enhances maize growth and nutrient uptake by driving the link between rhizosphere metabolites and microbiomes

New Phytologist, Journal Year: 2024, Volume and Issue: 243(4), P. 1506 - 1521

Published: June 14, 2024

Intercropping leads to different plant roots directly influencing belowground processes and has gained interest for its promotion of increased crop yields resource utilization. However, the precise mechanisms through which interactions between rhizosphere metabolites microbiome contribute production remain ambiguous, thus impeding understanding yield-enhancing advantages intercropping. This study conducted field experiments (initiated in 2013) pot experiments, coupled with multi-omics analysis, investigate plant-metabolite-microbiome maize. Field-based data revealed significant differences metabolite profiles soils maize monoculture In particular, intercropping exhibited higher microbial diversity chemodiversity. The chemodiversity composition were significantly related diversity, community composition, network complexity soil microbiomes, this relationship further impacted nutrient uptake. Pot-based findings demonstrated that exogenous application a metabolic mixture comprising key components enriched by (soyasapogenol B, 6-hydroxynicotinic acid, lycorine, shikimic phosphocreatine) enhanced root activity, content, biomass natural soil, but not sterilized soil. Overall, emphasized significance metabolite-microbe enhancing systems. It can provide new insights into controls within intensive agroecosystems, aiming enhance ecosystem services.

Language: Английский

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High stability and metabolic capacity of bacterial community promote the rapid reduction of easily decomposing carbon in soil

Communications Biology, Journal Year: 2021, Volume and Issue: 4(1)

Published: Dec. 8, 2021

Abstract Irreversible climate change alters the decomposition and sequestration of soil carbon (C). However, stability C components in soils with different initial organic matter contents its relationship response major decomposers to warming are still unclear. In this study, we translocated Mollisols a gradient (OM) (2%–9%) from situ cold region five warmer climatic regions simulate change. Soil C-rich (OM >5%) was more vulnerable translocation than that C-poor ≤ 5%), loss functional groups like O -alkyl, -aryl carboxyl C. Variations microbial β diversity latitude, temperature precipitation indicated contained resistant bacterial communities sensitive fungal soils, which led strong metabolism high utilization ability community warming. Our results suggest higher sensitivity content is related metabolic capacity decomposers, important for predicting soil-climate feedback.

Language: Английский

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Long-term application of nitrogen and phosphorus fertilizers changes the process of community construction by affecting keystone species of crop rhizosphere microorganisms

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 897, P. 165239 - 165239

Published: June 30, 2023

Language: Английский

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Interactions between dissolved organic matter and the microbial community are modified by microplastics and heat waves

Journal of Hazardous Materials, Journal Year: 2023, Volume and Issue: 448, P. 130868 - 130868

Published: Jan. 25, 2023

Language: Английский

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Effect of biodegradable PBAT microplastics on the C and N accumulation of functional organic pools in tropical latosol

Environment International, Journal Year: 2023, Volume and Issue: 183, P. 108393 - 108393

Published: Dec. 17, 2023

Microplastics (MPs) pollution is becoming an emerging global stressor for soil ecosystems. However, studies on the impacts of biodegradable MPs C sequestration have been mainly based bulk quantity, without considering storage form C, its persistency and N demand. To address this issue, common poly (butylene adipate-co-terephthalate) (PBAT) was used as model, effects functional organic pools, including mineral-associated (MAOM), particulate (POM) dissolved matter (DOM), were investigated from novel coupled perspective stocks. After adding PBAT-MPs, contents POM-C, DOM-C, MAOM-C increased by 546.9%-697.8%, 54.2%-90.3%, 13.7%-18.9%, respectively. Accordingly, total 116.0%-191.1%. Structural equation modeling showed that pools regulated PBAT input microbial metabolism associated with enzymes. Specifically, debris could be disguised to promote POM formation, which main pathway accumulation. Inversely, DOM-C formation attributed product selective consumption in DOM-N. Random forest model confirmed N-activated (e.g., Nitrospirae) PBAT-degrading bacteria Gemmatinadetes) important taxa accumulation, key enzymes rhizopus oryzae lipas, invertase, ammonia monooxygenase. The accumulation related oligotrophic Chloroflexi Ascomycota) aggregate decreasing DOM-N 46.9%-84.3%, but did not significantly change other pools. Collectively, findings highlight urgency control nutrient imbalance risk labile loss recalcitrant enrichment avoid depressed turnover rate MPs-polluted soil.

Language: Английский

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Characterization of heat, salt, acid, alkaline, and antibiotic stress response in soil isolate Bacillus subtilis strain PSK.A2

International Microbiology, Journal Year: 2024, Volume and Issue: unknown

Published: June 19, 2024

Language: Английский

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Influence of aquaculture practices on microbiota composition and pathogen abundance in pond ecosystems in South China

Water Research X, Journal Year: 2025, Volume and Issue: 27, P. 100302 - 100302

Published: Jan. 10, 2025

Pond microbiota play a crucial role in maintaining water quality and the health of aquaculture species. This study aimed to explore relationship between pond sediment (especially potential pathogens) physicochemical parameters under different conditions. Samples were collected from 21 monitoring sites across eastern, western, northern Guangdong, Pearl River Delta November 2021, March 2022, July 2022. Microbial structures analyzed using high-throughput sequencing 16S rRNA gene. The results indicated that distribution was more uniform than microbiota. Additionally, sampling time significantly influenced uniformity Factors such as species, culture pattern, NH4 +-N, longitude, latitude, total nitrogen (TN), NO3 --N, NO2 phosphorus (TP) correlated with structure, TN, TP, organic carbon structure. Furthermore, an increase +-N concentration increased variety pathogenic bacteria. Higher levels also relative abundance Mycobacterium water, whereas pattern (freshwater, seawater, brackish, modern captive culture, freshwater factory container aquaculture, or seawater culture) species abundances Vibrio, Tenacibaculum, Pseudoalteromonas, Francisella. bacteria higher Our suggest patterns, concentrations should be considered when preventing growth waters.

Language: Английский

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Effects of Herbaceous Plant Encroachment on the Soil Carbon Pool in the Shrub Tundra of the Changbai Mountains

Forests, Journal Year: 2025, Volume and Issue: 16(2), P. 197 - 197

Published: Jan. 22, 2025

Under global warming, vegetation composition changes induced by plant encroachment have a significant impact on the carbon balance of tundra ecosystems. The herbaceous plants into indigenous shrub communities has changed aboveground and belowground litter input characteristics in Changbai Mountains. However, variations dynamics soil organic (SOC) pool concentrations SOC stability remains ambiguous. In this study, samples were collected for lab experiments. Our results showed that increase due to Deyeuxia purpurea increased concentration. Simultaneously, D. decreased C/N decreasing components both resistant decomposition (C/N lignin/N) mineralization ability available N concentrations, CO2 release rate, ultimately enhanced capacity increasing concentration molecular structures, such as carbohydrates, litter, thereby decomposable structures active soil, while simultaneously reducing recalcitrant carbon. Even more, reduced capability nitrogen concentration, which collectively oxidation state (COX) stability. general, warming led encroachment, inputs properties tundra, turn stability, enhancing emission capacity, atmospheric forming vicious cycle.

Language: Английский

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