Bacterial diversity in soils subjected to long-term chemical fertilization can be more stably maintained with the addition of livestock manure than wheat straw

Soil Biology and Biochemistry, Journal Year: 2015, Volume and Issue: 88, P. 9 - 18

Published: May 27, 2015

Language: Английский

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Mineral vs. Organic Amendments: Microbial Community Structure, Activity and Abundance of Agriculturally Relevant Microbes Are Driven by Long-Term Fertilization Strategies

Frontiers in Microbiology, Journal Year: 2016, Volume and Issue: 7

Published: Sept. 14, 2016

Soil management is fundamental to all agricultural systems and fertilization practices have contributed substantially the impressive increases in food production. Despite pivotal role of soil microorganisms agro-ecosystems, we still a limited understanding complex response microbiota organic mineral very long-term. Here report effects different regimes (mineral, combined fertilization), carried out for more than century, on structure activity microbiome. Organic matter content, nutrient concentrations microbial biomass carbon were significantly increased by mineral, even strongly fertilization. Pyrosequencing revealed significant differences between structures bacterial fungal communities associated each regime. diversity, stimulated groups (Firmicutes, Proteobacteria Zygomycota) that are known prefer nutrient-rich environments, involved degradation compounds. In contrast, soils not receiving manure harbored distinct enriched oligotrophic organisms adapted nutrient-limited as Acidobacteria. The regime also affected relative abundances plant beneficial detrimental taxa, which may influence productivity stability agroecosystem. As expected, exoenzymes carbon, nitrogen phosphorous mineralization enhanced both types However, contrast comparable studies, highest chitinase phosphatase activities observed solely fertilized soil. Interestingly, these two enzymes showed particular high biomass-specific strong negative relation with pH. many parameters change slowly, particularity unchanged treatments since 1902 allows profound assessment linkages abiotic well biotic parameters. Our study pH TOC majors, while pools minors, drivers community. Due long-term studied, our findings likely represent permanent stable, rather transient, responses

Language: Английский

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Interactions of microplastics and cadmium on plant growth and arbuscular mycorrhizal fungal communities in an agricultural soil

Chemosphere, Journal Year: 2020, Volume and Issue: 254, P. 126791 - 126791

Published: April 15, 2020

Language: Английский

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Living at the Extremes: Extremophiles and the Limits of Life in a Planetary Context

Frontiers in Microbiology, Journal Year: 2019, Volume and Issue: 10

Published: April 15, 2019

Prokaryotic life has dominated most of the evolutionary history our planet, evolving to occupy virtually all available environmental niches. Extremophiles, especially those thriving under multiple extremes, represent a key area research for disciplines, spanning from study adaptations harsh conditions, biogeochemical cycling elements. Extremophile also implications origin studies and search on other planetary celestial bodies. In this article, we will review current state knowledge biospace in which operates Earth discuss it context, highlighting gaps areas opportunity.

Language: Английский

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Soil multifunctionality is affected by the soil environment and by microbial community composition and diversity

Soil Biology and Biochemistry, Journal Year: 2019, Volume and Issue: 136, P. 107521 - 107521

Published: June 26, 2019

Microorganisms are critical in mediating carbon (C) and nitrogen (N) cycling processes soils. Yet, it has long been debated whether the underlying biogeochemical cycles affected by composition diversity of soil microbial community or not. The communities can be influenced various environmental factors, which turn known to impact processes. objectives this study were test effects multiple edaphic drivers individually represented as multivariate environment interacting with diversity, concomitantly on functions (i.e. enzyme activities, C N processes). We employed high-throughput sequencing (Illumina MiSeq) analyze bacterial/archaeal fungal targeting 16S rRNA gene ITS1 region soils collected from three land uses (cropland, grassland forest) deriving two bedrock forms (silicate limestone). Based data set we explored single combined variables structure well activities several found that both shaped same most representation exerting stronger than communities, demonstrated (partial) Mantel tests. also similar controls bacterial/archaeal/fungal richness diversity. Soil only directly but not composition. In contrast, significantly related richness/diversity environment. This indicates direct control indirect structuring communities. further highlights importance diversity) important

Language: Английский

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Influence of 34-years of fertilization on bacterial communities in an intensively cultivated black soil in northeast China

Soil Biology and Biochemistry, Journal Year: 2015, Volume and Issue: 90, P. 42 - 51

Published: Aug. 7, 2015

Language: Английский

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Thirty four years of nitrogen fertilization decreases fungal diversity and alters fungal community composition in black soil in northeast China

Soil Biology and Biochemistry, Journal Year: 2016, Volume and Issue: 95, P. 135 - 143

Published: Jan. 5, 2016

Language: Английский

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pH as a Primary Control in Environmental Microbiology: 1. Thermodynamic Perspective

Frontiers in Environmental Science, Journal Year: 2018, Volume and Issue: 6

Published: May 1, 2018

pH influences the occurrence and distribution of microorganisms. Microbes typically live over a range 3 to 4 units are described as acidophiles, neutrophiles, alkaliphiles, depending on optimal for growth. Their growth rates vary with along bell- or triangle-shaped curve, which reflects limits cell structure integrity interference metabolism. We propose that can also affect thermodynamics kinetics microbial respiration, then help shape composition function communities. Here we use geochemical reaction modeling examine how environmental controls energy yields common redox reactions in anoxic environments, including syntrophic oxidation, iron reduction, sulfate methanogenesis. The results reveal changes both directly indirectly. direct change applies consume produce protons whereas indirect effect, all reactions, comes from regulation chemical speciation by pH. show respond strongly variation, may modulate interactions give rise metabolisms. These underscore importance control metabolisms provide insight into potential impacts variation activity In companion paper, continue explore responds variations, these responses outcome interactions, membership consortia.

Language: Английский

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The Roles of Plant Growth Promoting Microbes in Enhancing Plant Tolerance to Acidity and Alkalinity Stresses

Frontiers in Sustainable Food Systems, Journal Year: 2020, Volume and Issue: 4

Published: July 10, 2020

Plant growth often occurs under a range of stressful conditions, including soil acidity and alkalinity. Hydrogen ion concentration, which determines pH the soil, regulates entire chemistry plant nutrient colloidal solutions. Beyond certain levels multiple stresses such as hydrogen toxicity, imbalance, toxicities deficiencies are induced in plants. Breeding for stress coupled with suitable agronomic practices has been way to deal this situation agriculture. However, promoting microbes (PGPM) have shown potential sustainable enhancers help environmental stresses. Considering long-term evolutionary relationships between plants microbes, it is probable that much remains unknown about benefits could be harnessed from PGPM. This article reviews current understanding alkalinity effects on various approaches or address these review further provides detailed account regarding role PGPM management, when breeding combined. Approaches already evaluated limitations because soils gradual progressive conditions. Greater exploitation regard, would interesting explore they more fashion. Future crop production will require tolerance, but also implementation microbial technologies provide enhanced tolerance stress.

Language: Английский

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Microplastics Increase Soil pH and Decrease Microbial Activities as a Function of Microplastic Shape, Polymer Type, and Exposure Time

Frontiers in Environmental Science, Journal Year: 2021, Volume and Issue: 9

Published: June 23, 2021

Microplastic pollution is a topic of increasing concern, especially since this issue was first addressed in soils. Results have so far been variable terms effects, suggesting that there substantial context-dependency microplastic effects soil. To better define conditions may affect microplastic-related impacts, we here examined as function shape and polymer type, tested if on soil properties microbial activities change with incubation time. In our laboratory study, evaluated twelve different secondary microplastics representing four shapes: fibers, films, foams fragments; eight types: polyamide (PA), polycarbonate (PC), polyethylene (PE), polyester (PES), terephthalate (PET), polypropylene (PP), polystyrene (PS), polyurethane (PU). We mixed the sandy (0.4% w/w) incubated at 25°C for 31 days. Then, collected samples 3rd, 11th, 31st day, measured pH, respiration enzyme (soil enzymatic activities). Our results showed could depending were altered Soil pH increased fragments overall decreased days then increased. PE affected by time, declining over Overall, acid phosphatase activity not or type. β-D-glucosidase foams, cellobiosidase films while N-acetyl-β-glucosaminidase fibers fragments. Enzymatic fluctuated during except N-acetyl-β-glucosaminidase, which trend negatively correlated relationship less strong when added to study adds evidence research should embrace complexity diversity microplastics, highlighting role type influencing effects; additionally, show time also parameter consider, are dynamic even short term.

Language: Английский

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