Plant–microbiome interactions: from community assembly to plant health

Nature Reviews Microbiology, Journal Year: 2020, Volume and Issue: 18(11), P. 607 - 621

Published: Aug. 12, 2020

Language: Английский

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Increasing aridity reduces soil microbial diversity and abundance in global drylands

Proceedings of the National Academy of Sciences, Journal Year: 2015, Volume and Issue: 112(51), P. 15684 - 15689

Published: Dec. 8, 2015

Soil bacteria and fungi play key roles in the functioning of terrestrial ecosystems, yet our understanding their responses to climate change lags significantly behind that other organisms. This gap is particularly true for drylands, which occupy ∼41% Earth´s surface, because no global, systematic assessments joint diversity soil have been conducted these environments date. Here we present results from a study across 80 dryland sites all continents, except Antarctica, assess how changes aridity affect composition, abundance, fungi. The abundance was reduced as increased. These were largely driven by negative impacts on organic carbon content, positively affected both Aridity promoted shifts composition bacteria, with increases relative Chloroflexi α-Proteobacteria decreases Acidobacteria Verrucomicrobia. Contrary what has reported previous continental global-scale studies, pH not major driver bacterial diversity, fungal communities dominated Ascomycota. Our fill critical microbial ecosystems. They suggest aridity, such those predicted climate-change models, may reduce response will likely impact provision ecosystem services global drylands.

Language: Английский

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Network analysis reveals functional redundancy and keystone taxa amongst bacterial and fungal communities during organic matter decomposition in an arable soil

Soil Biology and Biochemistry, Journal Year: 2016, Volume and Issue: 97, P. 188 - 198

Published: April 3, 2016

Language: Английский

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Microbial regulation of terrestrial nitrous oxide formation: understanding the biological pathways for prediction of emission rates

FEMS Microbiology Reviews, Journal Year: 2015, Volume and Issue: 39(5), P. 729 - 749

Published: April 30, 2015

The continuous increase of the greenhouse gas nitrous oxide (N2O) in atmosphere due to increasing anthropogenic nitrogen input agriculture has become a global concern. In recent years, identification microbial assemblages responsible for soil N2O production substantially advanced with development molecular technologies and discoveries novel functional guilds new types metabolism. However, few practical tools are available effectively reduce situ flux. Combating negative impacts fluxes poses considerable challenges will be ineffective without successfully incorporating microbially regulated processes into ecosystem modeling mitigation strategies. Here, we synthesize latest knowledge (i) key pathways regulating consumption terrestrial ecosystems critical environmental factors influencing their occurrence, (ii) relative contributions major biological emissions by analyzing natural isotopic signatures using stable isotope enrichment inhibition techniques. We argue that it is urgently necessary incorporate traits biogeochemical order estimation reliability emissions. further propose methodology oriented framework from gene scales more robust prediction future

Language: Английский

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Forest Soil Bacteria: Diversity, Involvement in Ecosystem Processes, and Response to Global Change

Microbiology and Molecular Biology Reviews, Journal Year: 2017, Volume and Issue: 81(2)

Published: April 12, 2017

The ecology of forest soils is an important field research due to the role forests as carbon sinks. Consequently, a significant amount information has been accumulated concerning their ecology, especially for temperate and boreal forests. Although most studies have focused on fungi, soil bacteria also play roles in this environment. In soils, inhabit multiple habitats with specific properties, including bulk soil, rhizosphere, litter, deadwood habitats, where communities are shaped by nutrient availability biotic interactions. Bacteria contribute range essential processes involved cycling carbon, nitrogen, phosphorus. They take part decomposition dead plant biomass highly fungal mycelia. rhizospheres trees, interact roots mycorrhizal fungi commensalists or mycorrhiza helpers. mediate critical steps nitrogen cycle, N fixation. Bacterial respond effects global change, such climate warming, increased levels dioxide, anthropogenic deposition. This response, however, often reflects specificities each studied ecosystem, it still impossible fully incorporate into predictive models. understanding bacterial advanced dramatically recent years, but incomplete. exact extent contribution ecosystem will be recognized only future, when activities all community members simultaneously.

Language: Английский

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Microbial regulation of the soil carbon cycle: evidence from gene–enzyme relationships

The ISME Journal, Journal Year: 2016, Volume and Issue: 10(11), P. 2593 - 2604

Published: May 10, 2016

Language: Английский

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Structure and Functioning of Dryland Ecosystems in a Changing World

Annual Review of Ecology Evolution and Systematics, Journal Year: 2016, Volume and Issue: 47(1), P. 215 - 237

Published: Aug. 30, 2016

Understanding how drylands respond to ongoing environmental change is extremely important for global sustainability. In this review, we discuss biotic attributes, climate, grazing pressure, land cover change, and nitrogen deposition affect the functioning of at multiple spatial scales. Our synthesis highlights importance attributes (e.g., species richness) in maintaining fundamental ecosystem processes such as primary productivity, illustrates pressure are impacting worldwide, traits woody drivers their expansion former grasslands. We also emphasize role richness abundance controlling responses climate change. This knowledge essential guide conservation restoration efforts drylands, can be actively managed local scale increase resilience

Language: Английский

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The structure and function of the global citrus rhizosphere microbiome

Nature Communications, Journal Year: 2018, Volume and Issue: 9(1)

Published: Nov. 14, 2018

Citrus is a globally important, perennial fruit crop whose rhizosphere microbiome thought to play an important role in promoting citrus growth and health. Here, we report comprehensive analysis of the structural functional composition microbiome. We use both amplicon deep shotgun metagenomic sequencing bulk soil samples collected across distinct biogeographical regions from six continents. Predominant taxa include Proteobacteria, Actinobacteria, Acidobacteria Bacteroidetes. The core comprises Pseudomonas, Agrobacterium, Cupriavidus, Bradyrhizobium, Rhizobium, Mesorhizobium, Burkholderia, Cellvibrio, Sphingomonas, Variovorax Paraburkholderia, some which are potential plant beneficial microbes. also identify over-represented microbial traits mediating plant-microbe microbe-microbe interactions, nutrition acquisition promotion rhizosphere. results provide valuable information guide isolation culturing and, potentially, harness power improve production

Language: Английский

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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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It is elemental: soil nutrient stoichiometry drives bacterial diversity

Environmental Microbiology, Journal Year: 2016, Volume and Issue: 19(3), P. 1176 - 1188

Published: Dec. 10, 2016

It is well established that resource quantity and elemental stoichiometry play major roles in shaping below aboveground plant biodiversity, but their importance for microbial diversity soil remains unclear. Here, we used statistical modeling on a regional database covering 179 locations six ecosystem types across Scotland to evaluate the of total carbon (C), nitrogen (N) phosphorus (P) availabilities ratios, together with land use, climate biotic abiotic factors, determining scale patterns bacterial diversity. We found composition were primarily driven by variation (total C:N:P ratios), itself linked different uses, secondarily other important biodiversity drivers such as climate, spatial heterogeneity, pH, root influence (plant-soil microbe interactions) biomass (soil microbe-microbe interactions). In aggregate, these findings provide evidence nutrient strong predictor at scale.

Language: Английский

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