Anthropic disturbances impact the soil microbial network structure and stability to a greater extent than natural disturbances in an arid ecosystem

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 907, P. 167969 - 167969

Published: Oct. 30, 2023

Growing pressure from climate change and agricultural land use is destabilizing soil microbial community interactions. Yet little known about resistance adaptation to disturbances over time. This hampers our ability determine the recovery latency of interactions after disturbances, with fundamental implications for ecosystem functioning conservation measures. Here we examined response bacterial fungal networks in rhizosphere Haloxylon salicornicum (Moq.) Bunge ex Boiss. course resulting a history different hydric constraints involving flooding-drought successions. An anthropic disturbance related past use, frequent successions flooding drought, was compared natural disturbance, i.e., an evaporation basin, yearly The resulted specific network topology characterized by lower modularity stability, reflecting legacy on microbiome. In contrast, stability close those environments despite alpha diversity, composition that other sites. These results highlighted temporality structure where long-term lead higher than occurring shorter timescale.

Language: Английский

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Deciphering microbiomes dozens of meters under our feet and their edaphoclimatic and spatial drivers

Global Change Biology, Journal Year: 2023, Volume and Issue: 30(1)

Published: Nov. 13, 2023

Abstract Microbes inhabiting deep soil layers are known to be different from their counterpart in topsoil yet remain under investigation terms of structure, function, and how diversity is shaped. The microbiome soils (>1 m) expected relatively stable highly independent climatic conditions. Much less known, however, on these microbial communities vary along climate gradients. Here, we used amplicon sequencing investigate bacteria, archaea, fungi fifteen 18‐m depth profiles at 20–50‐cm intervals across contrasting aridity conditions semi‐arid forest ecosystems China's Loess Plateau. Our results showed that bacterial fungal α archaeal community similarity declined dramatically remained soil. Nevertheless, still the functional potential N cycling, plant‐derived organic matter degradation, resource exchange, water coordination. had closer taxa–taxa bacteria–fungi associations more influence dispersal limitation than microbiome. Geographic distance was influential bacteria archaea topsoil. We further negatively correlated with deep‐soil richness, similarity, relative abundance plant saprotroph, associations, but increased aerobic ammonia oxidation, manganese arbuscular mycorrhizal soils. Root depth, complexity, volumetric moisture, clay play bridging roles indirect effects microbes work indicates that, even nutrient cycling susceptible changes availability, consequences for understanding sustainability dryland whole‐soil response aridification. Moreover, propose neglecting may underestimate role moisture future scenarios.

Language: Английский

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Harnessing root-soil-microbiota interactions for drought-resilient cereals

Microbiological Research, Journal Year: 2024, Volume and Issue: 283, P. 127698 - 127698

Published: March 21, 2024

Cereal plants form complex networks with their associated microbiome in the soil environment. A system including variations of numerous parameters properties and host traits shapes dynamics cereal microbiota under drought. These multifaceted interactions can greatly affect carbon nutrient cycling offer potential to increase plant growth fitness drought conditions. Despite growing recognition importance agroecosystem functioning, harnessing root remains a significant challenge due interacting synergistic effects between traits, properties, agricultural practices, drought-related features. better mechanistic understanding root-soil-microbiota associations could lead development novel strategies improve production In this review, we discuss for improving environment suggest roadmap benefits these drought-resilient cereals. methods include conservative trait-based approaches selection breeding genetic resources manipulation environments.

Language: Английский

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Halotolerant Bacillus sp. strain RA coordinates myo‐inositol metabolism to confer salt tolerance to tomato

Journal of Integrative Plant Biology, Journal Year: 2024, Volume and Issue: 66(9), P. 1871 - 1885

Published: July 5, 2024

Soil salinity is a worldwide problem threatening crop yields. Some plant growth-promoting rhizobacteria (PGPR) could survive in high salt environment and assist adaptation to stress. Nevertheless, the genomic metabolic features, as well regulatory mechanisms promoting tolerance plants by these bacteria remain largely unknown. In current work, novel halotolerant PGPR strain, namely, Bacillus sp. strain RA can enhance tomato Comparative analysis of with its closely related species indicated level evolutionary plasticity exhibited strain-specific genes constraints driven purifying selection, which facilitated salt-affected soils. The transcriptome further showed that tolerate stress balancing energy metabolism via reprogramming biosynthetic pathways. Plants exude plethora metabolites strongly influence fitness. accumulation myo-inositol leaves under was observed, leading promotion growth triggered RA. Importantly, serves selective force assembly phyllosphere microbiome recruitment plant-beneficial species. It promotes destabilizing properties bacterial co-occurrence networks, but not fungal networks. Furthermore, interdomain interactions between fungi were strengthened response This work highlights genetic soils ability impact microorganisms through adjustment metabolites, thereby imparting enduring resistance against tomato.

Language: Английский

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Arbuscular Mycorrhizal Fungi and Rhizobium Improve Nutrient Uptake and Microbial Diversity Relative to Dryland Site-Specific Soil Conditions

Microorganisms, Journal Year: 2024, Volume and Issue: 12(4), P. 667 - 667

Published: March 27, 2024

Arbuscular mycorrhizal fungi (AMF) and rhizobium play a significant role in plant symbiosis. However, their influence on the rhizosphere soil microbiome associated with nutrient acquisition health is not well defined drylands of Montana (MT), USA. This study investigated effect microbial inoculants as seed treatment pea yield, uptake, potential functions, communities using high-throughput sequencing 16S ITS rRNA genes. The experiment was conducted under two contrasting dryland conditions four treatments: control, single inoculation AMF or Rhizobium, dual inoculations Rhizobium (AMF+Rhizobium). Our findings revealed that efficacy site-specific. AMF+Rhizobium synergistically increased grain yield at Sidney field site (DFS) 2, while Froid site, DFS 1, improved resilience to acidic but contributed marginal non-nutrient limiting conditions. Across sites, plants’ dependency (12%) higher than (8%) (4%) alone. Variations community structure composition indicate site-specific response inoculants. Overall, factors significantly influenced dynamics, functional potential. It underscores need for tailored management strategies consider characteristics optimize benefits from inoculation.

Language: Английский

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Arbuscular mycorrhizal fungi attenuate negative impact of drought on soil functions

Global Change Biology, Journal Year: 2024, Volume and Issue: 30(7)

Published: July 1, 2024

Although positive effects of arbuscular mycorrhizal (AM) fungi on plant performance under drought have been well documented, how AM regulate soil functions and multifunctionality requires further investigation. In this study, we first performed a meta-analysis to test the potential role in maintaining drought. Then, conducted greenhouse experiment, using pair hyphal ingrowth cores spatially separate growth fungal hyphae roots, investigate its resistance against Our showed that promote multiple functions, including aggregation, microbial biomass activities enzymes related nutrient cycling. The experiment demonstrated attenuate negative impact these thus multifunctionality, therefore, increasing their Moreover, buffering effect persists across different frequencies water supply species. These findings highlight unique by mitigating study highlights importance as nature-based solution sustaining world where events are intensifying.

Language: Английский

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Differential responses of soil bacteria, fungi and protists to root exudates and temperature

Microbiological Research, Journal Year: 2024, Volume and Issue: 286, P. 127829 - 127829

Published: July 14, 2024

Language: Английский

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Plant-Soil Microbial Interaction: Differential Adaptations of Beneficial vs. Pathogenic Bacterial and Fungal Communities to Climate-Induced Drought and Desiccation Stresses

Published: July 16, 2024

Climate change and the increasing frequency severity of drought events pose significant challenges for sustainable agriculture worldwide. Soil microorganisms, both beneficial pathogenic, play a crucial role in mediating plant-environment interactions shaping overall functioning agroecosystems. This review synthesizes current knowledge on contrasting adaptive mechanisms utilized by different groups plant-soil microorganisms focusing pathogenic bacterial fungal communities response to desiccation stresses. The examines common survival strategies employed microbes specifically rhizobacteria arbuscular mycorrhizal fungi, such as production osmoprotectants, altered gene expression, biofilm formation. It also highlights distinct versus mutualistic microbes, with pathogens tending prioritize virulence factors suppress plant growth, while enhance growth stress tolerance. Genetic exchange horizontal transfer (HGT) is identified key mechanism, allowing non-pathogenic acquire traits like tolerance factors. Environmental stressors can promote increased genetic spread within soil microbiome. complex interplay between drought-adapted their plants discussed, emphasizing need deeper understanding microbiome dynamics under climate change. be agricultural practices mitigate impacts health productivity. provides insights into divergent desiccation, managing resilience agroecosystems

Language: Английский

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Growth rate as a link between microbial diversity and soil biogeochemistry

Nature Ecology & Evolution, Journal Year: 2024, Volume and Issue: 8(11), P. 2018 - 2026

Published: Sept. 18, 2024

Language: Английский

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Meta-omics revealed that nitrogen fertilization alters the endophytic fungi divergence in maize field ecosystem

Ecological Indicators, Journal Year: 2024, Volume and Issue: 160, P. 111852 - 111852

Published: March 1, 2024

Endophytic mycobiomes are an integral part of crops in agricultural systems. Fertilization is a conventional practice to improve and may alter the soil plant In agroecosystems, Nature Based Solutions (NBS) key strategies for suitability. Investigating under N flux can provide fundamental data constructive NBS strategies. this study, effects nitrogen (N) fertilizer treatments on fungal compositions soil-maize systems were systematically investigated field experiments at six rates (F0, F72, F126, F180, F234, F280 kg N/ha) northern China. Meta-omics amplicon sequencing internal transcribed spacer (ITS) region was employed study community dynamics, network correlation, metabolic functional assemblies, abundance patterns core fungi. This found that communities significantly higher 72 N/ha compared with control other treatments. Network topology increased maize fungi (R2 = 0.69) but decreased 0.51). Abundances carbon–nitrogen metabolizing genes (Ure, AMT, gdhA GDH) correlated assembled by stochastic processes. Additionally, relative Ascomycota (67.26 %) dominant soil, whereas Basidiomycota (61. 73 prevailed samples N/ha. Moreover, Sporidiobolus, Alternaria, Fusarium, Penicillium served as conserved genera positively NH4+-N mg/kg, NO2–-N mg/kg NO3–-N pH components. Furthermore, selective tested confirmed increase growth rate utilization maize. The highlights promising role associated endophytes Nature-Based Solution optimizing fertilization crop production maize-agroecosystem.

Language: Английский

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