Effects of the nitrification inhibitor 3,4-dimethylpyrazole phosphate (DMPP) on the activity and diversity of the soil microbial community under contrasting soil pH

2021 ◽  
Author(s):  
Eleftheria Bachtsevani ◽  
Christina V. Papazlatani ◽  
Constantina Rousidou ◽  
Eleni Lampronikou ◽  
Urania Menkissoglu-Spiroudi ◽  
...  
Keyword(s):  
Microbial Community ◽  
Soil Ph ◽  
Soil Microbial Community ◽  
Nitrification Inhibitor ◽  
Soil Microbial

Soil pH effects on the toxicity of zinc oxide nanoparticles to soil microbial community

2018 ◽  
Vol 25 (28) ◽  
pp. 28140-28152 ◽  
Author(s):  
Concepción García-Gómez ◽  
María Dolores Fernández ◽  
Sandra García ◽  
Ana Francisca Obrador ◽  
Marta Letón ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Microbial Community ◽  
Soil Ph ◽  
Soil Microbial Community ◽  
Zinc Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Ph Effects ◽  
Soil Microbial

scholarly journals Effects of modifiers on soil enzyme activity and microbial community diversity in cadmium-contaminated farmland soil

2021 ◽  
Author(s):  
Yongqi Zhu ◽  
Tian Tian ◽  
Jingang Wang ◽  
Jianghui Song ◽  
Xiaoyan Shi ◽  
...  
Keyword(s):  
Alkaline Phosphatase ◽  
Enzyme Activity ◽  
Microbial Community ◽  
Microbial Diversity ◽  
Soil Ph ◽  
Alkaline Phosphatase Activity ◽  
Soil Microbial Community ◽  
Community Diversity ◽  
Microbial Community Diversity ◽  
Soil Microbial

Abstract Cadmium (Cd) contamination, with great toxicity, seriously threatens soil environment. In this study, the effects of biochar and biofertilizer used as modifiers on the biochemical properties, enzyme activity, and microbial diversity in Cd-contaminated soils (1, 2, and 4 mg·kg− 1) were investigated. The results showed that the soil C/N ratio and electrical conductance could be increased by biochar and biofertilizer (P < 0.05). The soil pH in the biochar and biofertilizer treatments increased by 0.99 and 0.95, respectively, and the soil available Cd concentration decreased by 60.24% and 74.34% (P < 0.05), respectively, compared with those in the control group. The increase of soil alkaline phosphatase activity was observed in the biochar treatment (P < 0.05), and the increases of the activities of soil invertase, alkaline phosphatase, catalase, and urease were observed in the biofertilizer treatment (P < 0.05). The relative abundances of Acidobacteria, Gemmatimonadetes, and Proteobacteria were increased and the soil microbial community structure was improved in the biochar and biofertilizer treatments. Redundancy analysis (RDA) and structural equation model (SEM) showed that soil available Cd concentration had negative effects on soil pH, C/N ratio, urease and alkaline phosphatase activity, and relative abundances of Acidobacteria and Proteobacteria. The increase of soil urease activity was the main reason for the increase of soil microbial diversity. In summary, the applications of biochar and biofertilizer could decrease soil available Cd concentration, increase soil microbial community diversity, and reduce the damage of Cd stress.

Changes in the activity and abundance of the soil microbial community in response to the nitrification inhibitor 3,4-dimethylpyrazole phosphate (DMPP)

2016 ◽  
Vol 16 (12) ◽  
pp. 2687-2697 ◽  
Author(s):  
Alessandro Florio ◽  
Anita Maienza ◽  
Maria Teresa Dell’Abate ◽  
Silvia Rita Stazi ◽  
Anna Benedetti
Keyword(s):  
Microbial Community ◽  
Soil Microbial Community ◽  
Nitrification Inhibitor ◽  
Soil Microbial

scholarly journals Effects of Phthalate Esters on Ipomoea aquatica Forsk. Seedlings and the Soil Microbial Community Structure under Different Soil Conditions

2019 ◽  
Vol 16 (18) ◽  
pp. 3489 ◽  
Author(s):  
Tingting Ma ◽  
Linwei Liu ◽  
Wei Zhou ◽  
Like Chen ◽  
Peter Christie
Keyword(s):  
Soil Moisture ◽  
Microbial Community ◽  
Soil Ph ◽  
Soil Microbial Community ◽  
Toxic Effects ◽  
Carotenoid Content ◽  
Soil Conditions ◽  
Water Spinach ◽  
Soil Microbial Community Structure ◽  
Soil Microbial

Phthalate acid esters (PAEs) are the most frequently utilized synthetic chemical compounds worldwide. They are typical emergent contaminants and are currently attracting considerable concern due to their risks to plants, animals, and public health. Determining the vital environmental factors that affect the toxicity of target pollutants in soil is important for vegetable production and the maintenance and control of soil productivity. We investigated the influence of di-n-butyl phthalate (DBP) and bis(2-ethylhexyl) phthalate (DEHP) under different soil conditions on physiological changes in water spinach (Ipomoea aquatic Forsk.) seedlings and the rhizosphere soil microbial community. Supported by our former experiments in which we determined the representative concentrations that caused the most pronounced toxic effects, three experimental concentrations were studied including control soils without PAEs and spiked soils with either 20 mg DBP or DEHP kg−1 soil. The soil at all the three PAE concentrations was then adjusted to test two soil pH values, three levels of soil organic matter (SOM) content, and three levels of soil moisture content; thus, we completed 12 treatments or conditions simulating different soil environment conditions in greenhouses. After 30 days of cultivation, we analyzed the toxicity effects of two target PAEs on plant growth and physiological factors, and on soil microbial community characteristics. The toxicity of soil DBP and DEHP to the physiology of water spinach was found to be most affected by the soil pH value, then by SOM content, and least of all by soil moisture. The results of the 454 high-throughput sequencing analysis of the soil microbial community indicated that the toxicity of target PAEs to soil microorganisms was most affected by SOM content and then by soil moisture, and no clear relationship was found with soil pH. Under different soil conditions, declines in leaf biomass, chlorophyll a content, and carotenoid content—as well as increases in free amino acid (FAA) content, superoxide anion free radical activity, and hydroxyl radical activity—occurred in response to DBP or DEHP. Heavy use of chemical fertilizer, organic fertilizer, and high humidity led to the special environmental conditions of greenhouse soil, constituting the main conditions considered in this study. The results indicate that under the special highly intensive production systems of greenhouses, soil conditions may directly influence the effects of pollutant phytotoxicity and may thus endanger the yield, nutrient content, and food safety of vegetables. The combined studies of the impacts on plants and rhizosphere microorganisms give a more detailed picture of the toxic effects of the pollutants under different soil conditions.

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