Soil viral–host interactions regulate microplastic-dependent carbon storage

Proceedings of the National Academy of Sciences, Год журнала: 2024, Номер 121(45)

Опубликована: Окт. 28, 2024

Microplastic is globally regarded as an important factor impacting biogeochemical cycles, yet our understanding of such influences limited by the uncertainties intricate microbial processes. By multiomics analysis, coupled with soil chemodiversity characterization and carbon use efficiency (CUE), we investigated how responses to microplastics impacted cycling in a long-term field experiment. We showed that biodegradable promoted organic accrual average 2.47%, while nondegradable inhibited it 17.4%, consequence virus–bacteria coadaptations disturbance. In relevant functional pathways, significantly ( P < 0.05) enhanced abundance transcriptional activity related complex carbohydrate metabolism, whereas functions involved amino acid metabolism glycolysis. Accordingly, viral lysis treatments introduce more compounds dissolved matters, thus benefiting oligotrophs high metabolic capabilities exploitation competition. contrast, enriched auxiliary genes through “piggyback-the-winner” strategy, conferring dominant copiotrophs, substrate utilization capabilities. These virus–host interactions were also demonstrated corresponding plastisphere, which would alter resource allocation via CUE, affecting storage consequently. Overall, results underscore importance viral–host microplastics-dependent ecosystem.

Язык: Английский

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Towards resilient food systems: Interactions with Indigenous knowledge

Trends in Food Science & Technology, Год журнала: 2025, Номер unknown, С. 104875 - 104875

Опубликована: Янв. 1, 2025

Язык: Английский

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Qualitatively elucidating the molecular characteristics of precursors for saturated halogenated disinfection byproducts in chlorinated urban eutrophic lake water by ultrahigh-resolution mass spectrometry

Journal of Hazardous Materials, Год журнала: 2025, Номер 489, С. 137709 - 137709

Опубликована: Фев. 22, 2025

Язык: Английский

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The Utilization of Dissolved Organic Matter Spectral and Molecular Properties in Freshwater Eutrophication Studies: A Mini Review

Water, Год журнала: 2025, Номер 17(2), С. 151 - 151

Опубликована: Янв. 8, 2025

Eutrophication is a major environmental issue affecting freshwater ecosystems worldwide. While its impact on the composition of dissolved organic matter (DOM) well recognized, relationships between DOM’s optical and molecular properties across eutrophication gradients remain underexplored. This review synthesizes recent research (derived from UV-Vis absorption fluorescence spectroscopy) characteristics (analyzed using Fourier-transform ion cyclotron resonance mass spectrometry, FT-ICR MS) in systems varying trophic states. Generalized additive model (GAM) analysis was used to assess correlations state index (TSI). The carbon (DOC), a254, SUVA254, SR, HIX, BIX, FI averaged 11.44 ± 11.97 mg/L, 23.23 16.95 m−1. 2.98 0.99 L·mg−1·m−1, 1.42 0.38, 2.38 1.31, 1.08 0.16, 2.11 0.44, respectively, mesotrophic middle-eutrophic sites. GAM results revealed significant linear correlation DOC properties, including FI, with TSI, suggesting that DOM accumulation intensifies eutrophication. such as O/C H/C ratios, double bond equivalents (DBEs), CHOS% content, exhibited nonlinear TSI. These trends imply shift sources terrestrial macrophyte-derived inputs those dominated by algal- sediment-derived progresses. We concluded indices alone may not serve reliable indicator states; future studies should focus integrating both offer more comprehensive assessment Given limited number variables examined this study, work only offers preliminary investigation into relationship changes More systematic focusing molecular-level analyses states broader geographic scale are needed.

Язык: Английский

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Ecosystem ecology needs an ecology of molecules

Trends in Ecology & Evolution, Год журнала: 2025, Номер unknown

Опубликована: Фев. 1, 2025

Ecosystem ecology needs a framework that explicitly considers the roles of organic compounds. The molecules integrates compound identity, diversity, and interactions to understand ecosystem processes, such as nutrient carbon cycling. This approach leverages advances in analytical chemistry molecular biology unravel complex chemical interplay within ecosystems.

Язык: Английский

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Skyglow increases cyanobacteria abundance and organic matter cycling in lakes

Water Research, Год журнала: 2025, Номер 278, С. 123315 - 123315

Опубликована: Фев. 19, 2025

Язык: Английский

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Molecular activity mediates the composition and assembly of dissolved organic matter in lake sediments

Limnology and Oceanography, Год журнала: 2025, Номер unknown

Опубликована: Март 7, 2025

Abstract Lake sediments are hotspots for carbon transformation and burial, where the turnover of dissolved organic matter (DOM), influenced by molecular activity, regulates global cycling. However, composition sediment DOM how its assembly mechanisms related to activity remain poorly understood. Here, 63 freshwater were collected from tropical cold temperate climatic zones in China. We explored underlying driven climate, physicochemical factors, microbes along gradient indicated number potential biochemical transformations which a molecule is involved. Sediment was dominated lipid‐ (35%) lignin‐like compounds (33%), latter enriched as increased. Besides, assemblage with higher had greater compositional similarity across different tended assemble deterministically. Specifically, average molecules increased 0.4 14, these structured shift stochastic deterministic processes, accounting ≥ 75% thereafter. Overall, assemblages primarily including total electrical conductivity. As increased, however, increasingly affected climate bacterial communities, consistent enhanced complexity bacterial–molecular networks. Collectively, our study highlights that regulated biotic abiotic factors further constrained intrinsic activity.

Язык: Английский

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Carbon Isotopic Signatures of Aquifer Organic Molecules along Anthropogenic Recharge Gradients

Environmental Science & Technology, Год журнала: 2025, Номер unknown

Опубликована: Апрель 7, 2025

The property of groundwater dissolved organic matter (DOM) subjected to anthropogenic recharge (AGR) might be affected by the water quality disparity between surface and natural groundwater. However, diverse molecular scenarios DOM under uneven recharging levels remain largely unexplored. We combined characteristics, carbon isotopic signatures molecules, end-member mixing analysis explore sensitivity potential tracking capabilities AGR along with gradients. Our findings suggested that enriched diverse, saturated, labile, sulfur-rich amplifying abundance intensity, which intensified Additionally, S-containing molecules their indicators like CHOS% (with threshold values 7.82%) exhibited high predictive power for recognition. major (diversity, saturated degree, stability) indicated 13C-containing were similar whole pool. Notably, specific (C12H10O5S C15H16O12), although not detected in all samples, exhibit robust stability or favorable solubility, rendering them candidates as AGR-sensitive molecules. R13C/12C ratio C19H24O5 emerged most tracer, exhibiting a strong correlation smallest deviation from theoretical line, signifying its optimal suitability precise source apportionment. This study offers novel insights into impacts contributes fostering harmonious balance human activities resource sustainability.

Язык: Английский

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Applying fluorescence spectroscopy with absolute principal component coefficients and two-dimensional correlation to characterize copper complexation with fluvial DOM from Danjinlicaohe River in China

Process Safety and Environmental Protection, Год журнала: 2025, Номер unknown, С. 107134 - 107134

Опубликована: Апрель 1, 2025

Язык: Английский

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Microbial Control on Dissolved Organic Matter Composition along the South-to-North Water Diversion Middle Route Project

ACS ES&T Water, Год журнала: 2025, Номер unknown

Опубликована: Апрель 26, 2025

Язык: Английский

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