Abundant fungi adapt to broader environmental gradients than rare fungi in agricultural fields

Global Change Biology, Journal Year: 2020, Volume and Issue: 26(8), P. 4506 - 4520

Published: April 23, 2020

Abstract Soil communities are intricately linked to ecosystem functioning, and a predictive understanding of how assemble in response environmental change is great ecological importance. Little known about the assembly processes governing abundant rare fungal across agro‐ecosystems, particularly with regard their adaptation. By considering taxa, we tested thresholds phylogenetic signals for preferences complex gradients reflect adaptation, explored factors influencing based on large‐scale soil survey agricultural fields eastern China. We found that taxa exhibited remarkably broader stronger compared taxa. Neutral played key role shaping subcommunity subcommunity. Null model analysis revealed was less clustered phylogenetically governed primarily by dispersal limitation, while homogeneous selection major process available sulfur factor mediating balance between stochastic deterministic both subcommunities, as indicated an increase stochasticity higher concentration. Based macroecological spatial scale datasets, our study potential adaptation identified distinct community fields. These results contribute mechanisms underlying generation maintenance diversity global change.

Language: Английский

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Soil pH and temperature regulate assembly processes of abundant and rare bacterial communities in agricultural ecosystems

Environmental Microbiology, Journal Year: 2019, Volume and Issue: 22(3), P. 1052 - 1065

Published: Oct. 10, 2019

Summary The factors determining stochastic and deterministic processes that drive microbial community structure, specifically the balance of abundant rare bacterial taxa, remain underexplored. Here we examined biogeographic patterns taxa explored environmental influencing their assembly in agricultural fields across eastern China. More phylogenetic turnover correlating with spatial distance was observed than sub‐communities. Homogeneous selection main process for both sub‐communities; however, sub‐community more tightly clustered phylogenetically sensitive to dispersal limitations sub‐community. Rare rice maize were governed by processes, which showed higher operational taxonomic unit richness. We propose a conceptual paradigm wherein soil pH mean annual temperature mediate sub‐communities respectively. A leads For sub‐community, dominance stochasticity low‐temperature regions indicates weaker niche‐based exclusion arrival evolutionary lineages. These findings suggest are dependent on distinct variables agro‐ecosystems.

Language: Английский

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Linking soil fungi to bacterial community assembly in arid ecosystems

iMeta, Journal Year: 2022, Volume and Issue: 1(1)

Published: Feb. 24, 2022

Abstract Revealing the roles of biotic factors in driving community assembly, which is crucial for understanding biodiversity and ecosystem functions, a fundamental but infrequently investigated subject microbial ecology. Here, combining cross‐biome observational study with an experimental microcosm study, we provided evidence to reveal major (i.e., soil fungi cross‐kingdom species associations) determining bacterial biogeography assembly complex terrestrial ecosystems arid regions northwest China. The results showed that fungal richness mediates balance processes communities, stochastic decreased increasing richness. Our further suggest predicted increase aridity conditions due climate change will reduce α‐diversity, particularly desert soils subsurface layer, induce more negative associations. Together, our represents significant advance linking mechanisms underlying biogeographic patterns under land‐use scenarios.

Language: Английский

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Environmental adaptation is stronger for abundant rather than rare microorganisms in wetland soils from the Qinghai‐Tibet Plateau

Molecular Ecology, Journal Year: 2021, Volume and Issue: 30(10), P. 2390 - 2403

Published: March 14, 2021

Disentangling the biogeographic patterns of rare and abundant microbes is essential in order to understand generation maintenance microbial diversity with respect functions they provide. However, little known about ecological assembly processes environmental adaptation across large spatial-scale wetlands. Using Illumina sequencing multiple statistical analyses, we characterized taxonomic phylogenetic bacteria fungi Qinghai-Tibet Plateau wetland soils. Abundant taxa exhibited broader thresholds stronger signals for traits than ones. By contrast, showed higher sensitivity changes closer clustering The null model analysis revealed that dispersal limitation belonging stochastic process dominated community assemblies bacteria, fungi, while variable selection deterministic governed bacteria. Neutral variation partitioning further confirmed were less environmentally constrained. Soil ammonia nitrogen was crucial factor mediating balance between stochasticity determinism both microbes. may have better potential are dispersed by Our findings extend knowledge ongoing change could facilitate prediction biodiversity loss caused probably climate human activity

Language: Английский

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Biodegradable microplastics enhance soil microbial network complexity and ecological stochasticity

Journal of Hazardous Materials, Journal Year: 2022, Volume and Issue: 439, P. 129610 - 129610

Published: July 14, 2022

Language: Английский

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Assembly of abundant and rare bacterial and fungal sub-communities in different soil aggregate sizes in an apple orchard treated with cover crop and fertilizer

Soil Biology and Biochemistry, Journal Year: 2021, Volume and Issue: 156, P. 108222 - 108222

Published: March 20, 2021

Language: Английский

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High Salinity Inhibits Soil Bacterial Community Mediating Nitrogen Cycling

Applied and Environmental Microbiology, Journal Year: 2021, Volume and Issue: 87(21)

Published: Aug. 18, 2021

Revealing the response of soil bacterial community to external environmental disturbances is an important but poorly understood topic in microbial ecology. In this study, we evaluated effect high salinity on composition and key biogeochemical processes salinized agricultural soils (0.22 19.98 dS m −1 ).

Language: Английский

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Community assembly of organisms regulates soil microbial functional potential through dual mechanisms

Global Change Biology, Journal Year: 2024, Volume and Issue: 30(2)

Published: Feb. 1, 2024

Unraveling the influence of community assembly processes on soil ecosystem functioning presents a major challenge in field theoretical ecology, as it has received limited attention. Here, we used series long-term experiments spanning over 25 years to explore bacterial, fungal, protist, and nematode communities using high-throughput sequencing. We characterized microbial functional potential by abundance genes associated with carbon, nitrogen, phosphorus, sulfur cycling GeoChip-based gene profiling, determined how organism groups regulate through diversity network stability. Our results indicated that balanced fertilization (NPK) treatment improved stochastic protist compared phosphorus-deficient (NK) treatment. However, there was nonsignificant increase normalized stochasticity ratio response across sites. findings emphasized environmental factors influenced biotic community, which regulated dual mechanisms. One mechanism high phosphorus levels low nutrient stoichiometry may determinism under NPK treatment, ultimately enhancing reinforcing stability community. The other process bacterial NK thereby improving β-diversity Taken together, these provide valuable insights into mechanisms underlying functioning.

Language: Английский

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Microbes drive metabolism, community diversity, and interactions in response to microplastic-induced nutrient imbalance

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 877, P. 162885 - 162885

Published: March 17, 2023

Language: Английский

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Increasing pesticide diversity impairs soil microbial functions

Proceedings of the National Academy of Sciences, Journal Year: 2025, Volume and Issue: 122(2)

Published: Jan. 9, 2025

Pesticide application is essential for stabilizing agricultural production. However, the effects of increasing pesticide diversity on soil microbial functions remain unclear, particularly under varying nitrogen (N) fertilizer management practices. In this study, we investigated stochasticity microbes and multitrophic networks through amplicon sequencing, assessed community related to carbon (C), N, phosphorus (P), sulfur (S) cycling, characterized dominant bacterial life history strategies via metagenomics along a gradient two N addition levels. Our findings show that higher enriches abundance specialists opportunists capable degrading or resisting pesticides, reducing proportion generalists in absence addition. These shifts can complicate networks. Under increased diversity, selective pressure may drive bacteria streamline their average genome size conserve energy while enhancing C, P, S metabolic capacities, thus accelerating nutrient loss. comparison, was found reduce niche differentiation at mitigating impacts network complexity functional traits associated with ultimately alleviating results reveal contrasting different input scenarios emphasize strategic mitigate ecological use systems.

Language: Английский

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