scholarly journals Microbial Communities and Physicochemical Properties of Myeolchi Jeotgal (Anchovy Jeotgal) Prepared with Different Types of Salts

2017 ◽  
Vol 27 (10) ◽  
pp. 1744-1752
Author(s):  
Jae Min Shim ◽  
Kang Wook Lee ◽  
Zhuang Yao ◽  
Jeong A Kim ◽  
Hyun-Jin Kim ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Microbial Communities ◽  
Different Types

scholarly journals Assessing the Microbial Communities in Four Different Daqusby Using PCR-DGGE, PLFA, and Biolog Analyses

2020 ◽  
Vol 69 (1) ◽  
pp. 27-37
Author(s):  
YUXI LING ◽  
WENYING LI ◽  
TONG TONG ◽  
ZUMING LI ◽  
QIAN LI ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Denaturing Gradient Gel Electrophoresis ◽  
Phospholipid Fatty Acid ◽  
Bacterial Species ◽  
Carbon Sources ◽  
Bacterial Biomass ◽  
Biolog Ecoplates ◽  
Different Types ◽  
Gradient Gel Electrophoresis ◽  
Plfa Analysis

Daqu made from raw wheat, barley or pea is used as an inoculum for the fermentation of Chinese Baijiu. In this study, the microbial communities of four different types of Daqus (sauce-flavor Wuling Daqu, sauce and strong-flavor Baisha Daqu, strong-flavor Deshan Daqu, and light-flavor Niulanshan Daqu) were analyzed by polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE), phospholipid fatty acid (PLFA) analysis, and Biolog EcoPlates analysis (Biolog). Clear differences were seen between the microbial communities of the four Daqus. PCR-DGGE showed differences in the number and brightness of bands between the Daqus, indicating the presence of unique bacterial species in Deshan Daqu, Wuling Daqu, and Niulanshan Daqu. Lactobacillus sanfranciscensis, Bacillus thermoamylovorans, and some unclassified bacteria were unique to Wuling Daqu, Deshan Daqu, and Niulanshan Daqu, respectively. Moreover, some bacterial species were observed in all four Daqus. A total of 26 PLFAs between C12 to C20 were detected from the four Daqus by PLFA analysis. Wuling Daqu had the highest total and fungal biomasses, Baisha Daqu had the highest bacterial biomass, and Niulanshan Daqu had the highest ratio of fungal biomass to bacterial biomass. The Biolog results indicated differences in the carbon source use and mode of the four Daqus, and also demonstrated that each Daqu had varying abilities to utilize different types of carbon sources. The cluster analysis of the three methods showed that the microbial communities of the four Daqus were different. This study also demonstrates the applicability of the three analytical methods in the evaluating of the microbial communities of Daqus.

scholarly journals Agricultural Pollution Risks Influence Microbial Ecology in Honghu Lake

2018 ◽  
Author(s):  
Maozhen Han ◽  
Melissa Dsouza ◽  
Chunyu Zhou ◽  
Hongjun Li ◽  
Junqian Zhang ◽  
...  
Keyword(s):  
Community Structure ◽  
Microbial Community ◽  
Physicochemical Properties ◽  
Microbial Communities ◽  
Microbial Ecology ◽  
Agricultural Pollution ◽  
Agricultural Activities ◽  
Sediment Samples ◽  
Water And Sediment ◽  
Honghu Lake

AbstractBackgroundAgricultural activities, such as stock-farming, planting industry, and fish aquaculture, can influence the physicochemistry and biology of freshwater lakes. However, the extent to which these agricultural activities, especially those that result in eutrophication and antibiotic pollution, effect water and sediment-associated microbial ecology, remains unclear.MethodsWe performed a geospatial analysis of water and sediment associated microbial community structure, as well as physicochemical parameters and antibiotic pollution, across 18 sites in Honghu lake, which range from impacted to less-impacted by agricultural pollution. Furthermore, the co-occurrence network of water and sediment were built and compared accorded to the agricultural activities.ResultsPhysicochemical properties including TN, TP, NO3--N, and NO2--N were correlated with microbial compositional differences in water samples. Likewise, in sediment samples, Sed-OM and Sed-TN correlated with microbial diversity. Oxytetracycline and tetracycline concentration described the majority of the variance in taxonomic and predicted functional diversity between impacted and less-impacted sites in water and sediment samples, respectively. Finally, the structure of microbial co-associations was influenced by the eutrophication and antibiotic pollution.ConclusionThese analyses of the composition and structure of water and sediment microbial communities in anthropologically-impacted lakes are imperative for effective environmental pollution monitoring. Likewise, the exploration of the associations between environmental variables (e.g. physicochemical properties, and antibiotics) and community structure is important in the assessment of lake water quality and its ability to sustain agriculture. These results show agricultural practices can negatively influence not only the physicochemical properties, but also the biodiversity of microbial communities associated with the Honghu lake ecosystem. And these results provide compelling evidence that the microbial community can be used as a sentinel of eutrophication and antibiotics pollution risk associated with agricultural activity; and that proper monitoring of this environment is vital to maintain a sustainable environment in Honghu lake.

scholarly journals Effects of maize rotation on the physicochemical properties and microbial communities of American ginseng cultivated soil

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Xiao-Lin Jiao ◽  
Xue-Song Zhang ◽  
Xiao-Hong Lu ◽  
Ruijun Qin ◽  
Yan-Meng Bi ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Microbial Communities ◽  
American Ginseng ◽  
Cultivated Soil

Composition of the microbial communities in the mineral soil under different types of natural forest

2005 ◽  
Vol 37 (4) ◽  
pp. 661-671 ◽  
Author(s):  
E HACKL ◽  
M PFEFFER ◽  
C DONAT ◽  
G BACHMANN ◽  
S ZECHMEISTERBOLTENSTERN
Keyword(s):  
Microbial Communities ◽  
Mineral Soil ◽  
Natural Forest ◽  
Different Types

scholarly journals Dairy Effluent-Saturated Biochar Alters Microbial Communities and Enhances Bermudagrass Growth and Soil Fertility

Agronomy ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1794
Author(s):  
Sarbjeet Niraula ◽  
Yong-Keun Choi ◽  
Kristen Payne ◽  
James P. Muir ◽  
Eunsung Kan ◽  
...  
Keyword(s):  
Plant Growth ◽  
Physicochemical Properties ◽  
Soil Fertility ◽  
Microbial Communities ◽  
Sandy Loam ◽  
Soil Physicochemical Properties ◽  
Dairy Effluent ◽  
Loading Rates ◽  
Soil Bacterial ◽  
Amended Soil

Recently, biochar has been proposed for various agronomic applications including improved plant growth and soil fertility. In this study, the effects of dairy effluent-saturated (SBC) and unsaturated wood-derived biochar (UBC) on Bermudagrass (Cynodon spp.) growth, soil fertility and microbial communities were investigated in a greenhouse pot study. SBC and UBC were mixed with sandy loam soil at various loading rates (0, 1, 2, 4, and 8%) to grow Bermudagrass for 10 weeks. Soil physicochemical properties and plant growth measurements were taken, followed by 16S rRNA (V3-V4) amplicon sequencing of soil bacterial communities. Amendment of SBC to soil altered the soil physicochemical properties and increased the concentrations of N and P in the soil at 2 to 8% loading rates compared to UBC treated soil. The addition of SBC to soil also increased the overall plant biomass compared to UBC with more effects on aboveground biomass. Differential abundance analysis of taxa showed enrichment of Proteobacteria in UBC-amended soil, whereas Firmicutes and Nitrospirae were abundant in SBC-amended soil. Interestingly, enrichment of photosynthetic and N-fixing bacteria was observed in both SBC and UBC-amended soils after 10 weeks of treatments. However, oxidative phosphorylation and biotin metabolisms were found to be more abundant in SBC-amended soil compared to UBC-amended soil. Overall, our study suggested that amendment of SBC to soil resulted in enhanced soil nutrients, microbial capacity and Bermudagrass growth than that of UBC. Therefore, application of SBC to soil in field trials would be merited to identify sustainable and effective practices for enhancing plant growth, soil fertility and soil bacterial community.

scholarly journals Diversity patterns of soil microbial communities in the Sophora flavescens rhizosphere in response to continuous monocropping

2020 ◽  
Author(s):  
Haiying Lei ◽  
Ake Liu ◽  
Qinwen Hou ◽  
Qingsong Zhao ◽  
Jia Guo ◽  
...  
Keyword(s):  
Microbial Community ◽  
Physicochemical Properties ◽  
Microbial Communities ◽  
Crop Production ◽  
Rhizosphere Soil ◽  
Soil Microbial Communities ◽  
Available Phosphorus ◽  
Sophora Flavescens ◽  
Diversity Patterns ◽  
Soil Microbial

Abstract Background: Continuous monocropping can affect the physicochemical and biological characteristics of cultivated soil. Sophora flavescens is a valuable herbal medicine and sensitive to continuous monocropping. Currently, diversity patterns of soil microbial communities in soil continuous monocropping with S. flavescens have not been extensively elucidated.Results: In this study, comparative 16S rDNA and internal transcribed spacer (ITS) MiSeq sequencing analyses were used to examine the taxonomic community structure and microbial diversity in nonrhizosphere soil (CK) and rhizosphere soils (SCC, TCC, and FCC) sampled from fields that had undergone two, three, and five years of continuous monocropping, respectively. Among the microbial communities, a decreased abundance of Acidobacteria and increased abundances of Proteobacteria and Bacteroidetes were found with the increase in monocropping years of S. flavescens. As the continuous monocropping time increased, the diversity of the bacterial community decreased, but that of fungi increased. Redundancy analysis also showed that among the properties of the rhizosphere soil, the available phosphorus, organic matter, total nitrogen, and sucrase had the greatest impacts on the diversity of the rhizosphere microbial community. Moreover, a biomarker for S. flavescens soil was also identified using the most differentially abundant bacteria and fungi in soil samples.Conclusions: Our study indicates that long-term monocropping exerted great impacts on microbial community distributions and soil physicochemical properties. The relationship between microbial community and physicochemical properties of rhizosphere soil would help clarify the side effects of continuous S. flavescens monocropping. Our study may aid in uncovering the theoretical basis underlying obstacles to continuous monocropping and provide better guidance for crop production.

Sign in / Sign up

Export Citation Format

Share Document