Soil microbial communities drive the resistance of ecosystem multifunctionality to global change in drylands across the globe

Ecology Letters, Journal Year: 2017, Volume and Issue: 20(10), P. 1295 - 1305

Published: Sept. 17, 2017

The relationship between soil microbial communities and the resistance of multiple ecosystem functions linked to C, N P cycling (multifunctionality resistance) global change has never been assessed globally in natural ecosystems. We collected soils from 59 dryland ecosystems worldwide investigate importance as predictor multifunctionality climate nitrogen fertilisation. Multifunctionality had a lower wetting-drying cycles than warming or deposition. was regulated by changes composition (relative abundance phylotypes) but not richness, total fungi bacteria fungal: bacterial ratio. Our results suggest that positive effects particular taxa on could potentially be controlled altering pH. Together, our work demonstrates strong links community six continents, provides insights into for buffering drylands worldwide.

Language: Английский

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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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Rhizosphere microorganisms can influence the timing of plant flowering

Microbiome, Journal Year: 2018, Volume and Issue: 6(1)

Published: Dec. 1, 2018

Plant phenology has crucial biological, physical, and chemical effects on the biosphere. Phenological drivers have largely been studied, but role of plant microbiota, particularly rhizosphere not considered. We discovered that microbial communities could modulate timing flowering Arabidopsis thaliana. Rhizosphere microorganisms increased prolonged N bioavailability by nitrification delayed converting tryptophan to phytohormone indole acetic acid (IAA), thus downregulating genes trigger flowering, stimulating further growth. The addition IAA hydroponic cultures confirmed this metabolic network. document a novel network in which soil microbiota influenced time, shedding light key functioning. This opens up multiple opportunities for application, from helping mitigate some climate change environmental stress plants (e.g. abnormal temperature variation, drought, salinity) manipulating characteristics using inocula increase crop potential.

Language: Английский

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Defining and quantifying the core microbiome: Challenges and prospects

Proceedings of the National Academy of Sciences, Journal Year: 2021, Volume and Issue: 118(51)

Published: Dec. 3, 2021

The term "core microbiome" has become widely used in microbial ecology over the last decade. Broadly, core microbiome refers to any set of taxa, or genomic and functional attributes associated with those that are characteristic a host environment interest. Most commonly, microbiomes measured as taxa shared among two more samples from particular environment. Despite popularity this its growing use, there is little consensus about how should be quantified practice. Here, we present brief history concept use representative sample literature review different metrics commonly for quantifying core. Empirical analyses have wide range microbiome, including arbitrary occurrence abundance cutoff values, focal taxonomic level ranging phyla amplicon sequence variants. However, many these susceptible sampling other biases. Developing standardized accounts such biases necessary testing specific hypotheses ecological roles microbiomes.

Language: Английский

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More Than the Sum of Its Parts: Microbiome Biodiversity as a Driver of Plant Growth and Soil Health

Annual Review of Ecology Evolution and Systematics, Journal Year: 2019, Volume and Issue: 50(1), P. 145 - 168

Published: July 24, 2019

Microorganisms drive several processes needed for robust plant growth and health. Harnessing microbial functions is thus key to productive sustainable food production. Molecular methods have led a greater understanding of the soil microbiome composition. However, translating species or gene composition into functionality remains challenge. Community ecology concepts such as biodiversity–ecosystem functioning framework may help predict assembly function plant-associated microbiomes. Higher diversity can increase number resilience plant-beneficial that be coexpressed unlock expression traits are hard obtain from any in isolation. We combine well-established community with molecular microbiology workable enable us enhance promote global change context.

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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Synthetic microbiota reveal priority effects and keystone strains in the Arabidopsis phyllosphere

Nature Ecology & Evolution, Journal Year: 2019, Volume and Issue: 3(10), P. 1445 - 1454

Published: Sept. 26, 2019

Language: Английский

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Community Assembly Processes of the Microbial Rare Biosphere

Trends in Microbiology, Journal Year: 2018, Volume and Issue: 26(9), P. 738 - 747

Published: March 14, 2018

Language: Английский

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Applying the core microbiome to understand host–microbe systems

Journal of Animal Ecology, Journal Year: 2020, Volume and Issue: 89(7), P. 1549 - 1558

Published: April 5, 2020

Abstract The host‐associated core microbiome was originally coined to refer common groups of microbes or genes that were likely be particularly important for host biological function. However, the term has evolved encompass variable definitions across studies, often identifying key with respect their spatial distribution, temporal stability ecological influence, as well contribution function and fitness. A major barrier reaching a consensus over how define its relevance biological, evolutionary theory is lack precise terminology associated definitions, persistent association Common, microbiomes can together generate insights into processes act independently function, while functional host‐adapted cores distinguish between facultative near‐obligate symbionts differ in effects on This commentary summarizes five broad have been applied literature, highlighting strengths limitations advancing our understanding host–microbe systems, noting where they are overlap, discussing potential No one definition capture range population. Applied together, reveal different layers microbial organization from which we begin understand govern interactions.

Language: Английский

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Rare taxa of alkaline phosphomonoesterase-harboring microorganisms mediate soil phosphorus mineralization

Soil Biology and Biochemistry, Journal Year: 2019, Volume and Issue: 131, P. 62 - 70

Published: Jan. 1, 2019

Language: Английский

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