Characterizing the regional distribution, interaction with microorganisms, and sources of dissolved organic matter for summer rainfall: Insights from spectroscopy, community structure, and back-trajectory analyses

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 926, P. 172086 - 172086

Published: March 29, 2024

Language: Английский

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Long-term straw return promotes accumulation of stable soil dissolved organic matter by driving molecular-level activity and diversity

Agriculture Ecosystems & Environment, Journal Year: 2024, Volume and Issue: 374, P. 109155 - 109155

Published: July 8, 2024

Language: Английский

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Co-inoculation of fungi and desert cyanobacteria facilitates biological soil crust formation and soil fertility

Frontiers in Microbiology, Journal Year: 2024, Volume and Issue: 15

Published: April 8, 2024

The inoculation of cyanobacteria for enriching soil nutrients and forming biological crusts (BSCs) is considered an effective means to restore degraded soil. However, there are limited studies on the application co-inoculation fungi remediation. In this study, a high exopolysaccharide-secreting Zh2 was isolated from lichen BSCs in Hobq Desert, co-inoculated with cyanobacterial strain identified as Phormidium tenue different proportions form sand during 35 days incubation period. Results revealed significant differences crust biomass properties among cyanobacterial/fungal ratios. Microbial biomass, nutrient content enzyme activities were higher than those inoculated alone. contributed fulvic-like accumulation, significantly increased humic-like humification. Redundancy analysis showed that positively correlated urease phosphatase, fulvic-like. Meanwhile, contents total carbon, nitrogen humic-like, catalase sucrase. Cyanobacteria play distinct roles improving fertility accumulating dissolved organic matter. This study provides new insights into effects inoculations formation development cyanobacterial-fungus complex crusts, offering novel method accelerating induced surface sand.

Language: Английский

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Effects of intercropping on composition and molecular diversity of soil dissolved organic matter in apple orchards: Different roles of bacteria and fungi

Agriculture Ecosystems & Environment, Journal Year: 2025, Volume and Issue: 382, P. 109509 - 109509

Published: Jan. 26, 2025

Language: Английский

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Lignin and Peptide Promote the Abundance and Activity of Arsenic Methylation Microbes in Paddy Soils

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: 59(5), P. 2541 - 2553

Published: Jan. 31, 2025

Rice physiological straighthead disease is induced by microbially mediated arsenic methylation and usually regionally distributed in paddy soils. However, the biogeochemical mechanism underlying geographic distribution of microbial communities harboring methylating genes (arsM) remains unclear. Herein, we revealed significant (p = 0.001) differences arsM different regions Chinese soils at continental scale. Moreover, a positive correlation between diversity chemodiversity soil dissolved organic matter (DOM) was revealed. Among DOM components, lignin- peptide-like are most important components impacting abundance communities. Metatranscriptomic analyses 18 selected samples that expression gene increased with increasing lignin peptide contents. Compared control, addition significantly < 0.05) methylated As concentration incubated Communities belonging to phyla Chloroflexota, Verrucomicrobiota, Deltaproteobacteria, Thermodesulfobacteriota, Ignavibacteriota mostly dominated relatively high This study highlights provides mechanistic information for contamination control sustainable rice production.

Language: Английский

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Historical inputs and biogeochemical transformations of dissolved organic matter since 1850 CE in a small plateau-lake, Southwest China

Palaeogeography Palaeoclimatology Palaeoecology, Journal Year: 2025, Volume and Issue: unknown, P. 112798 - 112798

Published: Feb. 1, 2025

Language: Английский

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Aridification Inhibits the Release of Dissolved Organic Carbon from Alpine Soils in Southwest China

Soil Systems, Journal Year: 2025, Volume and Issue: 9(1), P. 24 - 24

Published: March 6, 2025

The alpine peatlands in western Sichuan Province are currently experiencing aridification. To understand the effects of aridification on characteristics organic carbon release from soils, soil northwest Plateau was investigated. Soil columns were incubated under different moisture conditions situ and laboratory, ultraviolet-visible absorption spectroscopy three-dimensional fluorescence used to assess dissolved (DOC) levels. results revealed that (1) cumulative DOC decreased with decreasing content. laboratory (0–5 cm reached 1.93 ± 0.43 g/kg) greater than 1.40 0.13 g/kg); (2) 0–5 exhibited greatest response changes water content, layer (1.40 5–15 (1.25 0.03 (3) UV-visible spectra 3D spectral indicated increases content chromophoric matter (CDOM) components strong hydrophobicity, especially tyrosine (surface increased 39.59~63.31%), DOC. This increase hydrophobic CDOM enhances aromaticity degree humification Our drought inhibits DOC, which is unfavorable for sequestration potentially resulting loss pools further degradation ecosystem functions.

Language: Английский

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Unravelling Riverine Dissolved Organic Matter Sources Using Molecular Fingerprints and FEAST Model in A Multi-tributary Mountain River Basin

Water Research, Journal Year: 2025, Volume and Issue: 280, P. 123478 - 123478

Published: March 11, 2025

Language: Английский

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Medium molecular weight carbon fractions of DOM: Driving soil microbial community differentiation and soil organic carbon sequestration

Agriculture Ecosystems & Environment, Journal Year: 2025, Volume and Issue: 389, P. 109688 - 109688

Published: April 18, 2025

Language: Английский

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Fertilization Weakens the Ecological Succession of Dissolved Organic Matter in Paddy Rice Rhizosphere Soil at the Molecular Level

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(48), P. 19782 - 19792

Published: Nov. 15, 2023

Dissolved organic matter (DOM) is involved in numerous biogeochemical processes, and understanding the ecological succession of DOM crucial for predicting its response to farming (e.g., fertilization) practices. Although plentiful studies have examined how fertilization practice affects content soil DOM, it remains unknown long-term drives over temporal scales. Here, we investigated paddy rice rhizosphere soils subjected different treatments (CK: no fertilization; NPK: inorganic OM: along with plant growth. Our results demonstrated that significantly promoted molecular chemodiversity but weakened correlation between composition development. Time-decay analysis indicated had a shorter halving time under CK treatment (94.7 days), compared NPK (337.4 days) OM (223.8 treatments, reflecting lower turnover rate fertilization. Moreover, development affected assembly process only CK, not treatments. Taken together, our fertilization, especially greatly weakens rhizosphere, which has profound implication complex plant-DOM interactions.

Language: Английский

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