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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Crop rotational diversity enhances soil microbiome network complexity and multifunctionality

Geoderma, Journal Year: 2023, Volume and Issue: 436, P. 116562 - 116562

Published: June 11, 2023

Although it is widely accepted that crop rotations can alleviate the adverse effects of agricultural intensification on ecosystem functioning, influence rotational diversification soil microbial diversity, network complexity, and their associations with multifunctionality remains unclear. Here, we used a 16-year field experiment to assess effect six cropping regimes, respective diversity index (CDI, i.e., number species in rotation multiplied by per year) management intensity (MI, anthropogenic inputs including fertilizer use, pesticide use fuel consumption across 2-year cycle), community (bacteria, fungi protists) multifunctionality. We 20 functions related properties, basal respiration, enzymatic activities nitrogen cycling potential characterize Diversified was shown enhance Also, increased CDI, but were negatively correlated or had hump-shaped relationship MI. With increase microbiome nodes, edges degree increased, betweenness average path length decreased. An MI found have topological properties network. Soil complexity stronger than composition. This study illustrates more diverse under intermediate promoted multifunctionality, highlights crucial role maintaining functions.

Language: Английский

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The microbial rare biosphere: current concepts, methods and ecological principles

FEMS Microbiology Ecology, Journal Year: 2020, Volume and Issue: 97(1)

Published: Nov. 6, 2020

ABSTRACT Our ability to describe the highly diverse pool of low abundance populations present in natural microbial communities is increasing at an unprecedented pace. Yet we currently lack integrative view key taxa, functions and metabolic activity which make-up this communal pool, usually referred as ‘rare biosphere’, across domains life. In context, review examines rare biosphere its broader sense, providing historical perspective on representative studies enabled bridge concept from macroecology ecology. It then addresses our current knowledge prokaryotic biosphere, covers emerging insights into ecology, taxonomy evolution microeukaryotic, viral host-associated communities. We also recent methodological advances provide a synthetic overview how fits different conceptual models used explain community assembly mechanisms, composition function.

Language: Английский

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Assembly processes of abundant and rare microbial communities in orchard soil under a cover crop at different periods

Geoderma, Journal Year: 2021, Volume and Issue: 406, P. 115543 - 115543

Published: Oct. 21, 2021

Language: Английский

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Distinct Responses of Rare and Abundant Microbial Taxa to In Situ Chemical Stabilization of Cadmium-Contaminated Soil

mSystems, Journal Year: 2021, Volume and Issue: 6(5)

Published: Oct. 12, 2021

Soil microorganisms, which intricately link to ecosystem functions, are pivotal for the ecological restoration of heavy metal-contaminated soil. Despite importance rare and abundant microbial taxa in maintaining soil function, taxonomic functional changes communities during situ chemical stabilization cadmium (Cd)-contaminated their contributions functions remain elusive. Here, a 3-year field experiment was conducted assess effects five amendments (CaCO3 as well biochar rice straw, individually or combination with CaCO3) on communities. The bacterial community exhibited narrower niche breadth pH Cd speciation than more sensitive environmental altered by different amendments. However, had comparable impacts fungal assemblies were dominated variable selection stochastic processes (dispersal limitation undominated processes), respectively, while both governed dispersal limitation. Changes pH, speciation, organic matter (SOM) may play essential roles assembly taxa. Furthermore, restored multifunctionality closely related recovery specific keystone species, especially (Gemmatimonadaceae Haliangiaceae) (Ascomycota). Together, our results highlight distinct responses linkage multifunctionality. IMPORTANCE Understanding species is crucial remediation metal-polluted Our study assessed efficiencies commonly used emphasized relative We found great discrepancies composition, assembly, breadth, between Cd-contaminated Application triggered key highly highlighted underpinning process.

Language: Английский

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Distinct strategies of the habitat generalists and specialists in sediment of Tibetan lakes

Environmental Microbiology, Journal Year: 2022, Volume and Issue: 24(9), P. 4153 - 4166

Published: May 20, 2022

Summary Microbial metacommunities normally comprise generalists and specialists. Uncovering the mechanisms underlying diversity patterns of these two sub‐communities is crucial for aquatic biodiversity maintenance. However, little known about ecological assembly processes co‐occurrence habitat specialists across large spatial scales in plateau lake sediments, particularly regarding their environmental adaptations. Here, we investigated sediment Tibetan lakes role stability metacommunity network. Our results showed that exhibited broader thresholds closer phylogenetic clustering than specialist counterparts. In contrast, stronger signals preferences compared with generalists. Stochastic dominated generalist (63.2%) (81.3%) community assembly. Sediment pH was major factor mediating balance between stochastic deterministic addition, as revealed by network analysis, played a greater maintaining The insights gained from this study can be helpful to understand maintenance microbial lakes.

Language: Английский

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Impact analysis of hydraulic loading rate on constructed wetland: Insight into the response of bulk substrate and root-associated microbiota

Water Research, Journal Year: 2022, Volume and Issue: 216, P. 118337 - 118337

Published: March 21, 2022

Language: Английский

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The process of nitrogen-adaptation root endophytic bacterial rather than phosphorus-adaptation fungal subcommunities construction unveiled the tomato yield improvement under long-term fertilization

Frontiers in Microbiology, Journal Year: 2025, Volume and Issue: 15

Published: Jan. 17, 2025

Interactions between endophytes (endophytic bacteria and fungi) plants are crucial in maintaining crop fitness agricultural systems, particularly relation to abundant rare subcommunities involved community construction. However, the influence of long-term fertilization on heterogeneous rhizosphere nitrogen phosphorus environments how these conditions affect key root their assembly mechanisms remain unclear. We studied 26th year a field experiment conducted greenhouse with varying levels (CKP0, CKP1, CNP0, CNP1, ONP0, ONP1) assess composition tomato impact yield. employed 16S rRNA fungal ITS region amplicon sequencing investigate endophytic subcommunities, network correlations, core subcommunity structures, species that enhance The results indicated organic manure fertilizers significantly increased soil content, availability (labile P, moderately labile non-labile P). These also affected (based Bray-Curtis distance) processes (βNTI) microbial subcommunities. both bacterial was primarily governed by dispersal limitation, structures being regulated content available (AN) P (MLP). Rare complemented ecological niches co-occurrence network, supporting functions enhancing stability. Nitrogen-adapting provided stronger predictive correlation for yield than phosphorus-adapting Additionally, three genera such as Arthrobacter, Microbacterium, Sphingobium were identified potentially improving improvement. findings revealed distinct fertilization, our understanding better management practices controlling improve intensive ecosystems.

Language: Английский

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Bridging Rare and Abundant Bacteria with Ecosystem Multifunctionality in Salinized Agricultural Soils: from Community Diversity to Environmental Adaptation

mSystems, Journal Year: 2021, Volume and Issue: 6(2)

Published: March 27, 2021

Soil salinization is a worldwide environmental problem and threatens plant productivity microbial diversity. Understanding the generation maintenance of diversity essential to estimate soil tillage potential via investigating ecosystem multifunctionality.

Language: Английский

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Distinct Functions and Assembly Mechanisms of Soil Abundant and Rare Bacterial Taxa Under Increasing Pyrene Stresses

Frontiers in Microbiology, Journal Year: 2021, Volume and Issue: 12

Published: July 2, 2021

Elucidating the relative importance of species interactions and assembly mechanisms in regulating bacterial community structure functions, especially abundant rare subcommunities, is crucial for understanding influence environmental disturbance shaping ecological functions. However, little known about how polycyclic aromatic hydrocarbon (PAH) stress alters stability functions taxa. Here, we performed soil microcosms with gradient pyrene stresses as a model ecosystem to explore roles determining structures subcommunities. The dose–effect significantly altered compositions With increasing stresses, diversity increased while it decreased rare. Importantly, taxa exhibited much broader niche width adaptivity than rare, contributing more biodegradation, whereas played key role improving subcommunity resistance stress, potentially promoting persistence stability. Furthermore, co-occurrence network analysis revealed that inclined occupy core central position adaptation stresses. Stochastic processes rather subcommunity. Overall, these findings extend our response pollution laying leading theoretical basis are targets biostimulation remediation.

Language: Английский

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