Soil microbial necromass carbon in forests: A global synthesis of patterns and controlling factors

Soil Ecology Letters, Journal Year: 2024, Volume and Issue: 6(4)

Published: March 23, 2024

Language: Английский

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Soil organic carbon accumulation mechanisms in soil amended with straw and biochar: entombing effect or biochemical protection?

Biochar, Journal Year: 2025, Volume and Issue: 7(1)

Published: Feb. 12, 2025

Abstract Converting crop residues into biochar and subsequently incorporating it soils is a promising strategy to improve carbon sequestration in agroecosystems. However, differences the potential mechanisms for soil organic (SOC) accumulation between its feedstock materials remain unclear. This study performed nine-year field experiment involving four treatments Mollisol: mineral fertilizers alone combined with maize straw or biochar, control without amendments. The main objectives of this were assess how incorporation influence SOC content, chemical composition, microbial necromass (MNC) community characteristics. Compared alone, significantly ( P < 0.05) increased while (40.5% increase) had more pronounced effects than (23.7% increase). Similarly, both MNC content boosted biomass, but impact did biochar. Additionally, markedly aromaticity by 26.6% 0.05), reduced 2.85% > 0.05). Fungi, rather bacteria, played crucial role increasing through their inputs under incorporation. Our results demonstrated that enhanced primarily entombing effect necromass, biochemical protection from recalcitrant aromatic carbon. present findings provide valuable insight practices lead maximize sequestration. Graphical

Language: Английский

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Use of amino sugars can overestimate necromass formation The role of death and lysis of microbial and plant cells in the formation of soil organic matter

Soil Biology and Biochemistry, Journal Year: 2025, Volume and Issue: unknown, P. 109750 - 109750

Published: Feb. 1, 2025

Language: Английский

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Potential Roles of Soil Viruses in Karst Forest Soil Carbon and Nitrogen Cycles

Forests, Journal Year: 2025, Volume and Issue: 16(5), P. 735 - 735

Published: April 25, 2025

Soil viruses, ubiquitous and abundant biological entities that are integral to microbial communities, exert pivotal impacts on ecosystem functionality, particularly within carbon (C) nitrogen (N) cycles, through intricate interactions with bacteria, archaea, fungi, other taxa. While their contributions soil dynamics increasingly elucidated, the specific roles of viruses in karst forest remain largely underexplored. Karst ecosystems (covering 15% global terrestrial surface) characterized by unique geological formations, thin patchy layers, high pH Ca2+, rapid hydrological dynamics, collectively fostering environmental conditions may shape viral ecology modulate C N cycling. This perspective synthesizes existing knowledge functions distinctive characteristics soil, proposing potential mechanisms which could influence cycling such fragile ecosystems. regulate cycles both directly indirectly via hosts, mainly including shaping community structure, mediating horizontal gene transfer metabolism, increasing availability alleviating nutrient limitations, promoting sequestration, mitigating climate change. work aims bridge biogeochemical providing insights into sustainable stewardship resilience. We delineate critical gaps propose future perspectives, advocating for targeted metagenomic long-term experimental studies diversity, virus–host-environment interactions, temporal dynamics. Specifically, we advocate following research priorities advance our understanding studies: (I) abundance, activity: characterizing activity forests using metagenomics complementary molecular approaches; (II) virus–host interactions: investigating between key taxa involved cycling; (III) impacts: quantifying lysis fluxes soil; (IV) modeling cycles: developing integrative models incorporate virus-mediated processes frameworks at different spatial scales. Such efforts essential validate hypothesized underlying mechanisms, offering a foundation nature-based solutions facilitate support ecological restoration vulnerable regions amid

Language: Английский

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Trade-off between soil organic carbon sequestration and plant nutrient uptake in arbuscular mycorrhizal symbiosis

Fungal Biology Reviews, Journal Year: 2024, Volume and Issue: 49, P. 100381 - 100381

Published: July 7, 2024

Arbuscular mycorrhizal fungi (AMF) play a pivotal role in soil organic carbon (C) dynamics. AMF can channel C obtained from plants into the as labile and recalcitrant materials with contrasting impacts on (SOC) reserves. Labile supply, while increasing microbial biomass, also elevate respiration, leading to enhanced matter turnover. Conversely, production of materials, including biomass glomalin-related protein (GRSP) promote SOC sequestration directly by acting long-term storage, strengthening aggregates, promoting formation mineral-bound carbon. The products often generate controversies regarding communities capture, especially under rising atmospheric CO2 concentrations. Emerging evidence suggests that distinct phylogeny exhibit varying mobilization symbiotic nutrient exchange abilities owing their divergent life histories. However, we argue resource use efficiency among species significantly influences phenotypic outcome AM symbiosis, well functional traits favoring substances proteins mineral-associated over may positively impact long-term. Whereas an guild plant growth through (i.e., sugars) exudation increase turnover lead loss. Although strong mutualist negatively stocks, they compensate for this trade-off depositing fresh, newly fixed photosynthesis. ways which is offset vary different community compositions, warranting further investigation.

Language: Английский

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Effects of soil moisture on soil viral reproductive strategies in an agricultural soil

European Journal of Soil Science, Journal Year: 2024, Volume and Issue: 75(4)

Published: July 1, 2024

Abstract Genomic evidence suggests that lysogenic viruses significantly influence the evolution of their host communities and soil microbial ecology functionality. However, response viral reproductive strategies (VRS) to environmental factors, in particular water stress, remains poorly understood. We investigated this by employing a laboratory microcosm incubation system with different moisture levels (30%, 60% 90% field capacity). Our study focused on biochemical properties, bacterial populations, fractions virus/bacteria ratio (VBR). The results showed affected counts, VBR ( p < 0.01), counts increasing decreasing moisture. fraction peaked at low moisture, suggesting shift strategy under hydration which may affect virus‐bacteria interactions nutrient dynamics, enhancing adaptability. Analyses using correlation, random forest structural equation modelling identified as dominant factor shaping VRS altering availability population. These findings provide new insight into regulation feedback change from life history viruses.

Language: Английский

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Advances, Challenges, and Perspectives in Glomalin-Related Soil Protein Research

Microorganisms, Journal Year: 2025, Volume and Issue: 13(4), P. 740 - 740

Published: March 25, 2025

Glomalin-related soil protein (GRSP), a glycoprotein primarily exuded by arbuscular mycorrhizal fungi (AMF), exerts key roles in ecological processes terrestrial ecosystems. Nevertheless, the intricate nature of GRSP, coupled with constraints its extraction and analytical methodologies, impedes comprehensive understanding compositional attributes functions. Moreover, scope current GRSP research has undergone significant expansion, necessitating synthesis this field. Here, we employed bibliometric analysis to systematically assess trends hotspots field based on 840 relevant articles indexed Web Science Core Collection database. Among them, parameters evaluated encompass publications’ quantity, highly cited articles, high-frequency keywords, historical direct citations. These analyses illuminated state-of-the-art research, delineated emergent trends, provided future perspectives. Current investigations into predominantly focus three major topics: (i) GRSP’s nature, origin, quantification methodologies; (ii) influencing factors including agricultural management practices, climate land use change; (iii) functions enhancing aggregate stability, C sequestration, contamination remediation. Our findings can serve as scholarly resource for advancing inquiries functionalities prospective applications sustainable restoration.

Language: Английский

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Continental-scale drivers of soil microbial extracellular polymeric substances

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: April 9, 2025

Extracellular polymeric substances (EPS) are a vital component of microbial residues which contribute to soil organic carbon (SOC). However, despite various conjectures and hypotheses regarding EPS controls, empirical research experimental evidence validate these theories have remained highly limited. In this study, we addressed knowledge gap by conducting extensive sampling across Europe, encompassing diverse climates bedrock land use types, systematically investigate contents large-scale controls. We found that significantly influenced the concentration, contribution EPS-carbon (C) SOC, as well production efficiency. The average concentration was 956 ± 55 µg g⁻¹ (n = 92 sites), with EPS-C contributing on 1.6 0.1% SOC. Soil concentrations were higher carbonate than silicate sedimentary geologies. terms use, grassland soils had compared cropland but did not differ from woodland soils. Further detailed investigations proximate physicochemical drivers content transect showed slightly different for polysaccharides proteins. For instance, affected while pattern inverse Microbial efficiency, expresses per biomass C, negatively correlated reflecting trade-off between C allocation growth extracellular production. efficiency increased under harsh environmental conditions (e.g., low moisture content, high drought index), unaffected pH extremes. On large scale, accumulation promoted its factors promoting sorption stabilization EPS, such clay exchangeable Ca Fe oxides. These findings underscore significant yet overlooked role critical soil-stable pool, it influences SOC should be further studied better understand cycling.

Language: Английский

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Deciphering the Energy Use Channels in Soil Organic Matter: Impacts of Long-term Manure Addition and Necromass Revealed by LC-FT-ICR-MS

Soil Biology and Biochemistry, Journal Year: 2025, Volume and Issue: unknown, P. 109857 - 109857

Published: May 1, 2025

Language: Английский

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Bedrock geochemistry regulates glomalin-related soil protein accrual in subtropical karst forest soils, Southwest China

Ecological Indicators, Journal Year: 2025, Volume and Issue: 176, P. 113680 - 113680

Published: June 2, 2025

Language: Английский

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