Fungal Communities Are More Sensitive to the Simulated Environmental Changes than Bacterial Communities in a Subtropical Forest: the Single and Interactive Effects of Nitrogen Addition and Precipitation Seasonality Change

Microbial Ecology, Journal Year: 2022, Volume and Issue: 86(1), P. 521 - 535

Published: Aug. 4, 2022

Language: Английский

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Nitrate determines the bacterial habitat specialization and impacts microbial functions in a subsurface karst cave

Frontiers in Microbiology, Journal Year: 2023, Volume and Issue: 14

Published: Feb. 9, 2023

Karst caves are usually considered as natural laboratories to study pristine microbiomes in subsurface biosphere. However, effects of the increasingly detected nitrate underground karst ecosystem due acid rain impact on microbiota and their functions have remained largely unknown. In this study, samples weathered rocks sediments were collected from Chang Cave, Hubei province subjected high-throughput sequencing 16S rRNA genes. The results showed that significantly impacted bacterial compositions, interactions, different habitats. Bacterial communities clustered according habitats with distinguished indicator groups identified for each individual habitat. Nitrate shaped overall across two a contribution 27.2%, whereas pH TOC, respectively, structured sediments. Alpha beta diversities increased concentration both habitats, directly affecting alpha diversity sediments, but indirectly by lowering pH. more at genus level than because genera correlated rocks. Diverse keystone taxa involved nitrogen cycling co-occurrence networks such reducers, ammonium-oxidizers, N 2 -fixers. Tax4Fun2 analysis further confirmed dominance genes cycling. Genes methane metabolism carbon fixation also dominant. dissimilatory assimilatory reduction substantiated functions. Our first time revealed terms functions, providing an important reference deciphering disturbance human activities

Language: Английский

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Adaptation mechanisms of the soil microbial community under stoichiometric imbalances and nutrient-limiting conditions in a subtropical nitrogen-saturated forest

Plant and Soil, Journal Year: 2023, Volume and Issue: 489(1-2), P. 239 - 258

Published: April 11, 2023

Language: Английский

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Adaptation of Soil Fungal Community Structure and Assembly to Long- Versus Short-Term Nitrogen Addition in a Tropical Forest

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

Published: Aug. 25, 2021

Soil fungi play critical roles in ecosystem processes and are sensitive to global changes. Elevated atmospheric nitrogen (N) deposition has been well documented impact on fungal diversity community composition, but how the assembly responds duration effects of experimental N addition remains poorly understood. Here, we aimed investigate soil variations under short- (2 years) versus long-term (13 exogenous (∼100 kg ha –1 yr ) a N-rich tropical forest China. We observed that short-term significantly increased taxonomic phylogenetic α-diversity shifted composition with significant increases relative abundance Ascomycota decreases Basidiomycota . Short-term also saprotrophic decreased ectomycorrhizal fungi. However, unremarkable these indices were found addition. The α-diversity, major phyla, genera, functional guilds mainly correlated pH NO 3 – –N concentration, correlations much stronger than results null, neutral models normalized stochasticity ratio ( NST index consistently revealed stochastic played predominant forest, contribution was by These findings highlighted responses duration-dependent, i.e., structure would be become adaptive enrichment.

Language: Английский

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Forage Grasses Steer Soil Nitrogen Processes, Microbial Populations, and Microbiome Composition in A Long-term Tropical Agriculture System

Agriculture Ecosystems & Environment, Journal Year: 2021, Volume and Issue: 323, P. 107688 - 107688

Published: Sept. 29, 2021

Language: Английский

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