Dynamic changes in soil chemical properties and microbial community structure in response to different nitrogen fertilizers in an acidified celery soil

AbstractThe sex-specific physical and biochemical responses in dioecious plants to abiotic stresses could result in gender imbalance, and how to ease the current situation by microorganisms is still unclear. Using native soil where poplars were grown, growth parameters, soil physicochemical properties in the rhizosphere soil of different sexes of Populus cathayana exposed to salt stress and exogenous arbuscular mycorrhizal (AM) inoculation were tested. Besides, the sex-specific microbial community structures in the rhizosphere soil of different sexes of Populus cathayana were compared under salt stress. To identify the sex-specific microbial community characteristics related to salinity and AM symbiosis, a combined qPCR and DGGE method was used to monitor microbial community diversity. Seedlings suffered severe pressure by salt stress, reflected in limited growth, biomass, and nutrient element accumulation, especially on females. Exogenous AM inoculation treatment alleviated these negative effects, especially under salt treatment of 75 mM. Compared with salt effect, exogenous AM inoculation treatment showed a greater effect on soil physical–chemical properties of both sexes. Based on DGGE results, salt stress negatively affected fungal richness but positively affected fungal Simpson diversity index, while exogenous AM inoculation treatment showed the opposite effect. Structural equation modeling (SEM) was performed to show the causal relationships between salt and exogenous AM inoculation treatments with biomass accumulation and microbial community: salt and exogenous AM inoculation treatment showed complicated effects on elementary concentrations, soil properties, which resulted in different relationship with biomass accumulation and microbial community. Salt stress had a negative effect on soil properties and microbial community structure in the rhizosphere soil of P. cathayana, whereas exogenous AM inoculation showed positive impacts on most of the soil physical–chemical properties and microbial community status.

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Dynamic changes in environment condition and microbial community structure in trench and flat seabed sediments of Tokyo Bay, Japan

Water Science & Technology ◽

10.2166/wst.2005.0298 ◽

2005 ◽

Vol 52 (9) ◽

pp. 107-114 ◽

Cited By ~ 1

Author(s):

U. Hasanudin ◽

M. Fujita ◽

Y. Koibuchi ◽

K. Fujie

Keyword(s):

Community Structure ◽

Microbial Community ◽

Microbial Community Structure ◽

Sulfur Cycle ◽

Chemical Environment ◽

Tokyo Bay ◽

Dynamic Changes ◽

Overlying Water ◽

Anoxic Conditions ◽

Seabed Sediments

Dynamic changes in the chemical environment in the bottom of overlying water and microbial community structure in trench and flat seabed sediments were evaluated during summer and autumn in Tokyo Bay, Japan, to elucidate the response of microbial community changes as a consequence of dredging activity. Quinone profile analysis was performed to evaluate the changes in microbial community structure in the sediments. Bottom shape and location of each station affected the chemical environment of the overlying water. The trench bottom shape had longer anoxic conditions than the flat bottom shape. Nitrogen and phosphorus concentrations affected the microbial density in the sediment. During anoxic conditions, the ubiquinone/menaquinone ratio (UQ/MK) was less than unity and increased with rising dissolved oxygen (DO) concentrations. The dominant quinone species in the trench and flat seabed sediments were MK with 6 and 7 isoprene units (MK-6 and MK-7) and UQ with 8 and 9 isoprene units (UQ-8 and UQ-9). MK-6 and UQ-8 containing bacteria might have a great influence on the sulfur cycle of the aquatic ecosystem. While, MK-7 and UQ-9 containing bacteria correlated with the deposition of phototropic bacteria cells onto the seabed sediment. The trench bottom shape contained higher concentrations of MK-6, MK-7, UQ-8 and UQ-9, especially during summer.

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Dynamic changes in microbial community structure and function in phenol-degrading microcosms inoculated with cells from a contaminated aquifer

FEMS Microbiology Ecology ◽

10.1111/j.1574-6941.2009.00802.x ◽

2010 ◽

Vol 71 (2) ◽

pp. 247-259 ◽

Cited By ~ 13

Author(s):

David R. Elliott ◽

Julie D. Scholes ◽

Steven F. Thornton ◽

Athanasios Rizoulis ◽

Steven A. Banwart ◽

...

Keyword(s):

Community Structure ◽

Microbial Community ◽

Microbial Community Structure ◽

Structure And Function ◽

Dynamic Changes ◽

Contaminated Aquifer ◽

And Function

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Food Waste Composting and Microbial Community Structure Profiling

Processes ◽

10.3390/pr8060723 ◽

2020 ◽

Vol 8 (6) ◽

pp. 723 ◽

Cited By ~ 2

Author(s):

Kishneth Palaniveloo ◽

Muhammad Azri Amran ◽

Nur Azeyanti Norhashim ◽

Nuradilla Mohamad-Fauzi ◽

Fang Peng-Hui ◽

...

Keyword(s):

Community Structure ◽

Microbial Community ◽

Food Waste ◽

Microbial Community Structure ◽

Agricultural Land ◽

Denaturing Gradient Gel Electrophoresis ◽

Negative Impact ◽

Water System ◽

Chemical Properties ◽

Single Strand Conformation Polymorphism

Over the last decade, food waste has been one of the major issues globally as it brings a negative impact on the environment and health. Rotting discharges methane, causing greenhouse effect and adverse health effects due to pathogenic microorganisms or toxic leachates that reach agricultural land and water system. As a solution, composting is implemented to manage and reduce food waste in line with global sustainable development goals (SDGs). This review compiles input on the types of organic composting, its characteristics, physico-chemical properties involved, role of microbes and tools available in determining the microbial community structure. Composting types: vermi-composting, windrow composting, aerated static pile composting and in-vessel composting are discussed. The diversity of microorganisms in each of the three stages in composting is highlighted and the techniques used to determine the microbial community structure during composting such as biochemical identification, polymerase chain reaction denaturing gradient gel electrophoresis (PCR-DGGE), terminal restriction fragment length polymorphism (T-RFLP) and single strand-conformation polymorphism (SSCP), microarray analysis and next-generation sequencing (NGS) are discussed. Overall, a good compost, not only reduces waste issues, but also contributes substantially to the economic and social sectors of a nation.

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Response of chemical properties, microbial community structure and functional genes abundance to seasonal variations and human disturbance in Nanfei River sediments

Ecotoxicology and Environmental Safety ◽

10.1016/j.ecoenv.2019.109601 ◽

2019 ◽

Vol 183 ◽

pp. 109601 ◽

Cited By ~ 2

Author(s):

Mingzhu Zhang ◽

Zhaojun Wu ◽

Qingye Sun ◽

Yunxiao Ding ◽

Ziwei Ding ◽

...

Keyword(s):

Community Structure ◽

Microbial Community ◽

Microbial Community Structure ◽

Seasonal Variations ◽

Human Disturbance ◽

River Sediments ◽

Chemical Properties ◽

Functional Genes

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A dataset of plant and microbial community structure after long-term grazing and mowing in a semiarid steppe

Scientific Data ◽

10.1038/s41597-020-00738-1 ◽

2020 ◽

Vol 7 (1) ◽

Author(s):

Wenhuai Li ◽

Jasna Hodzic ◽

Jishuai Su ◽

Shuxia Zheng ◽

Yongfei Bai

Keyword(s):

Community Structure ◽

Microbial Community ◽

Plant Species ◽

Microbial Community Structure ◽

Microbial Community Composition ◽

Species Abundance ◽

Chemical Properties ◽

Saprotrophic Fungi ◽

Management Regimes

AbstractGrazing and mowing are two dominant management regimes used in grasslands. Although many studies have focused on the effects of grazing intensity on plant community structure, far fewer test how grazing impacts the soil microbial community. Furthermore, the effects of long-term grazing and mowing on plant and microbial community structure are poorly understood. To elucidate how these management regimes affect plant and microbial communities, we collected data from 280 quadrats in a semiarid steppe after 12-year of grazing and mowing treatments. We measured plant species abundance, height, coverage, plant species diversity, microbial biomass, and microbial community composition (G+ and G− bacteria; arbuscular mycorrhizal and saprotrophic fungi; G+/G− and Fungi/Bacteria). In addition, we determined the soil’s physical and chemical properties, including soil hardness, moisture, pH, organic carbon, total nitrogen, and total phosphorus. This is a long-term and multifactorial dataset with plant, soil, and microbial attributes which can be used to answer questions regarding the mechanisms of sustainable grassland management in terms of plant and microbial community structure.

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