Metagenomics reveals the response of desert steppe microbial communities and carbon-nitrogen cycling functional genes to nitrogen deposition

Frontiers in Microbiology, Год журнала: 2024, Номер 15

Опубликована: Март 26, 2024

Introduction Nitrogen (N) deposition seriously affects the function of carbon (C) and N cycling in terrestrial ecosystems by altering soil microbial communities, especially desert steppe ecosystems. However, there is a need for comprehensive understanding how microorganisms involved each C cycle process respond to deposition. Methods In this study, shotgun metagenome sequencing was used investigate variations cycling-related genes northern China after 6 years following deposition: N0 (control); N30 (N addition 30 kg ha −1 year ): N50 50 ). Results significantly increased relative abundance Actinobacteria ( P < 0.05) while decreased abundances Proteobacteria Acidobacteria 0.05). This impacted community composition soils. The annual or up did not affect gene but changed cycle-related microorganism structure. affected (50 ), which pmoA-amoA related nitrification nirB associated with assimilation nitrite reductase. There may be niche overlap between same processes. Discussion study provides new insights into effects on communities functions better ecological consequences anthropogenic addition.

Язык: Английский

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Reducing nitrogen fertilizer applications mitigates N2O emissions and maintains sugarcane yields in South China

Agriculture Ecosystems & Environment, Год журнала: 2024, Номер 377, С. 109250 - 109250

Опубликована: Авг. 22, 2024

Язык: Английский

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Ammonia-oxidizing microorganisms overwhelm denitrifiers in determining the efficacy of DMPP in upland soils

Applied Soil Ecology, Год журнала: 2025, Номер 207, С. 105955 - 105955

Опубликована: Фев. 16, 2025

Язык: Английский

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Domesticated rice alters the rhizosphere microbiome, reducing nitrogen fixation and increasing nitrous oxide emissions

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Фев. 27, 2025

Crop domestication has revolutionized food production but increased agriculture's reliance on fertilizers and pesticides. We investigate differences in the rhizosphere microbiome functions of wild domesticated rice, focusing nitrogen (N) cycling genes. Shotgun metagenomics real-time PCR reveal a higher abundance N-fixing genes rice microbiomes. Validation through transplanting suspensions shows highest nitrogenase activity soils with suspensions, regardless planted type. Domesticated however, exhibits an number associated nitrous oxide (N2O) production. Measurements N2O emissions are significantly soil compared to rice. Comparative root metabolomics between further show that exudates positively correlate frequency microbial genes, as indicated by metagenomic qPCR, respectively. To confirm, we add metabolites black soil, qPCR maximize gene abundances activity. Collectively, these findings suggest negatively impacts bacteria enriches produce greenhouse gas N2O, highlighting environmental trade-offs crop domestication. Domestication crops boosted dependence This study harbors nitrogen-fixing rhizosphere, while more

Язык: Английский

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Bioenergy Production From Sugarcane Straw: Implications for Soil‐Related Ecosystem Services

GCB Bioenergy, Год журнала: 2025, Номер 17(5)

Опубликована: Апрель 8, 2025

ABSTRACT Sugarcane straw removal for bioenergy production—especially second‐generation ethanol—is shown to be a promising pathway decarbonization. However, indiscriminate can negatively affect soil‐related ecosystem services (SES), compromising the sustainability of associated production. Here, comprehensive literature review was conducted select and quantify changes in agronomic environmental indicators affected by low (≤ 1/3), moderate (> 1/3 ≤ 2/3), high 2/3) levels consequential impacts on eight SES. A quali‐quantitative approach developed generate an impact matrix that provides direction effects (negative, neutral, or positive) confidence levels. Overall, lowest SES occurs under with neutral effect C storage, nutrient cycling, weed control, greenhouse gas (GHG) mitigation, provision food bioenergy. Water regulation, erosion maintenance soil biodiversity were most removal. Moderate compromise sugarcane cultivation areas, except pest control GHG emission mitigation. Finally, it also discussed how negative could mitigated even reversed through adoption best management practices, such as cover crops, organic amendments, biological products (e.g., use phosphate‐solubilizing bacteria mycorrhizal fungi), reduced tillage, machinery traffic control. Ultimately, results this study useful guide decision‐making farmers, investors, stakeholders, policymakers toward sustainable production contributes low‐carbon economy climate change

Язык: Английский

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Exploring soil genes as proxies for short-term SOC and N dynamics: insights from a four-year on-farm experimentation

Italian Journal of Agronomy, Год журнала: 2025, Номер unknown, С. 100039 - 100039

Опубликована: Апрель 1, 2025

Язык: Английский

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Metagenomics and plant-microbe symbioses: Microbial community dynamics, functional roles in carbon sequestration, nitrogen transformation, sulfur and phosphorus mobilization for sustainable soil health

Biotechnology Advances, Год журнала: 2025, Номер 82, С. 108580 - 108580

Опубликована: Апрель 15, 2025

Язык: Английский

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Partial organic substitution for chemical fertilizer reduces N2O emissions but increases the risk of N loss through nitrification in Tibetan farmland

Scientific Reports, Год журнала: 2025, Номер 15(1)

Опубликована: Апрель 25, 2025

Язык: Английский

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Soil microbial communities as potential regulators of N2O sources in highly acidic soils

Soil Ecology Letters, Год журнала: 2023, Номер 5(4)

Опубликована: Июнь 2, 2023

Язык: Английский

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Effects of microplastics on N2O production and reduction potential in crop soils of northern China

Chemosphere, Год журнала: 2024, Номер 351, С. 141256 - 141256

Опубликована: Янв. 19, 2024

Язык: Английский

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