Acquisition of microbial communities and enhanced availability of soil nutrients by the isopod Porcellio scaber (Latr.) (Isopoda: Oniscidea)

2000 ◽  
Vol 31 (2) ◽  
pp. 102-107 ◽  
Author(s):  
G. Kautz ◽  
W. Topp
Keyword(s):  
Microbial Communities ◽  
Soil Nutrients ◽  
Porcellio Scaber

Impacts of the alien trees Ailanthus altissima (Mill.) Swingle and Robinia pseudoacacia L. on soil nutrients and microbial communities

2016 ◽  
Vol 96 ◽  
pp. 65-73 ◽  
Author(s):  
S. Medina-Villar ◽  
S. Rodríguez-Echeverría ◽  
P. Lorenzo ◽  
A. Alonso ◽  
E. Pérez-Corona ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Soil Nutrients ◽  
Robinia Pseudoacacia ◽  
Ailanthus Altissima ◽  
Robinia Pseudoacacia L

scholarly journals Structure and driving factors of the soil microbial community associated with Alhagi sparsifolia in an arid desert

PLoS ONE ◽  
2021 ◽  
Vol 16 (7) ◽  
pp. e0254065
Author(s):  
Wenjing Li ◽  
Lamei Jiang ◽  
Yang Zhang ◽  
Dexiong Teng ◽  
Hengfang Wang ◽  
...  
Keyword(s):  
Microbial Community ◽  
Microbial Communities ◽  
Soil Nutrients ◽  
Soil Microbial Community ◽  
Nitrate Nitrogen ◽  
Ammonium Nitrogen ◽  
Driving Factors ◽  
Fungal Communities ◽  
Alhagi Sparsifolia ◽  
Soil Microbial

Environmental properties are important factors in structuring soil microbial communities. The primary driving factors vary in different ecosystems. In the present work, we analyzed the microbial communities of rhizosphere and bulk soils associated with the halophyte Alhagi sparsifolia across three salt/water gradients in the desert area around Ebinur Lake Basin, China, using high-throughput sequencing technology. We found that there were significant differences in soil water content (SWC), soil salinity (SAL), total nitrogen (TN), and total phosphorus (TP) contents between the three water/salt gradients. In the L (low water and salt) plot, Actinobacteria was the most abundant bacterial phylum while Ascomycota was the dominant fungal phylum. The relative abundance of Actinobacteria was negatively correlated with soil pH, soil organic carbon (SOC), TP, and available phosphorus (AP). The abundance of Bacteroidetes was significantly positively correlated with soil SOC, SWC, SAL, pH, TN, and TP (P < 0.05). The abundance of fungal phylum Chytridiomycota was significantly positively correlated with pH (P < 0.01), SWC, AP, and sulfate ion (P < 0.05). SOC and nitrate nitrogen were the main factors impacting the bacterial community, while ammonium nitrogen (NH4+) and TP were the main driving forces for the fungal community. Soil nutrients were the main contributors to the dissimilarities in the bacterial and fungal communities, explaining 48.06% and 44.45% of the variation. SWC, SAL, and pH explained only a small percentage of the microbial community dissimilarity. In conclusion, soil microbial community structure was affected by SWC, SAL, pH, and soil nutrients, with soil nutrients as the main driving factors. Nitrogen has a differential effect on the different microbial communities: bacterial communities of Alhagi sparsifolia were mainly affected by nitrate nitrogen, while fungal communities were mainly driven by ammonium nitrogen.

scholarly journals The Impacts of Different Green Manure on Soil Microbial Communities and Crop Health

2016 ◽  
Author(s):  
Hongwu Yang ◽  
Jiaojiao Niu ◽  
Jiemeng Tao ◽  
Yabing Gu ◽  
Chao Zhang ◽  
...  
Keyword(s):  
Soil Properties ◽  
Microbial Communities ◽  
Soil Nutrients ◽  
Green Manure ◽  
Soil Microbial Communities ◽  
Disease Rate ◽  
Rrna Gene ◽  
Soil Microbial ◽  
Tobacco Disease ◽  
Crop Health

Green manure could improve soil nutrients and crop production, playing a significant role in sustainable agriculture. However, the impacts of green manure on crop health and the roles soil microbial communities play in the process haven&rsquo;t been clarified clearly yet. In this study, we investigated soil microbial community composition and structure in four tobacco farmlands, which were treated with different green manure (control, ryegrass, pea and rape), using 16S rRNA gene amplicons sequencing. Results showed that green manure had significant impacts on soil properties, microbial communities and tobacco health. First, soil total C, N and Ca content increased significantly in groups treated with green manure than control. Second, soil community diversity was significantly higher in groups treated with green manure. Third, green manure especially ryegrass, decreased tobacco disease (bacterial wilt) rate dramatically, and the process might be mediated by soil microbial communities. On the one hand, several microbial populations were found to be potentially disease inducible or suppressive. For example, the abundances of Dokdonella and Rhodanobacter were positively correlated to tobacco disease rate, while Acidobacteira_Gp4 and Gp6 had negative correlations with tobacco disease. On the other hand, soil microbial communities were shaped by soil properties (e.g., pH, C and N content). In conclusion, our research showed that green manure could increase soil nutrients directly, and further improve tobacco health mediated by soil microorganisms, which may shed light on revealing interactions among soil properties, microorganisms and plants.

scholarly journals Compositional Shift of Bacterial, Archaeal, and Fungal Communities Is Dependent on Trophic Lifestyles in Rice Paddy Soil

2021 ◽  
Vol 12 ◽  
Author(s):  
Hyun Kim ◽  
Jongbum Jeon ◽  
Kiseok Keith Lee ◽  
Yong-Hwan Lee
Keyword(s):  
Microbial Diversity ◽  
Microbial Communities ◽  
Soil Nutrients ◽  
Network Inference ◽  
Chemical Properties ◽  
Rice Paddy ◽  
Biological Properties ◽  
Fungal Communities ◽  
Compositional Changes ◽  
Nutrient Conditions

The soil environment determines plants’ health and performance during their life cycle. Therefore, ecological understanding on variations in soil environments, including physical, chemical, and biological properties, is crucial for managing agricultural fields. Here, we present a comprehensive and extensive blueprint of the bacterial, archaeal, and fungal communities in rice paddy soils with differing soil types and chemical properties. We discovered that natural variations of soil nutrients are important factors shaping microbial diversity. The responses of microbial diversity to soil nutrients were related to the distribution of microbial trophic lifestyles (oligotrophy and copiotrophy) in each community. The compositional changes of bacterial and archaeal communities in response to soil nutrients were mainly governed by oligotrophs, whereas copiotrophs were mainly involved in fungal compositional changes. Compositional shift of microbial communities by fertilization is linked to switching of microbial trophic lifestyles. Random forest models demonstrated that depletion of prokaryotic oligotrophs and enrichment of fungal copiotrophs are the dominant responses to fertilization in low-nutrient conditions, whereas enrichment of putative copiotrophs was important in high-nutrient conditions. Network inference also revealed that trophic lifestyle switching appertains to decreases in intra- and inter-kingdom microbial associations, diminished network connectivity, and switching of hub nodes from oligotrophs to copiotrophs. Our work provides ecological insight into how soil nutrient-driven variations in microbial communities affect soil health in modern agricultural systems.

The impact of Carpobrotus cfr. acinaciformis (L.) L. Bolus on soil nutrients, microbial communities structure and native plant communities in Mediterranean ecosystems

2016 ◽  
Vol 409 (1-2) ◽  
pp. 19-34 ◽  
Author(s):  
Emilio Badalamenti ◽  
Luciano Gristina ◽  
Vito Armando Laudicina ◽  
Agata Novara ◽  
Salvatore Pasta ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Soil Nutrients ◽  
Plant Communities ◽  
Mediterranean Ecosystems ◽  
Native Plant ◽  
The Impact

scholarly journals Microbial Structure and Diversity in Rhizosphere Soil under Different Forest Types in the Subtropical Zone of China

2021 ◽  
Author(s):  
Liuting Zhou ◽  
Jianjuan Li ◽  
Chen Zhang ◽  
Xinlai Guo ◽  
Wei Chu ◽  
...  
Keyword(s):  
Microbial Community ◽  
Microbial Diversity ◽  
Microbial Communities ◽  
Soil Nutrients ◽  
Soil Microbial Community ◽  
Rhizosphere Soil ◽  
Forest Types ◽  
Soil Microbial Diversity ◽  
Subtropical Zone ◽  
Soil Microbial

Abstract The aim of this study was to explore the soil microbial variability within different forest ecosystems (evergreen broad-leaf forest (EBF), coniferous forest (CF), subalpine dwarf forest (SDF) and alpine meadow (AM) at different altitudes in mid-subtropics of China. The phospholipid fatty acid (PLFA) method was used to analyze the microbial communities in rhizosphere soil under different forest types. The relationships were also analyzed between the microbial diversity and soil nutrients. A total of 27 PLFA biomarkers were detected and the PLFA concentrations decreased in the sequence of bacteria > fungus > actinomycete > protozoa in all forest types. The microbial communities in the soil under all forest types were distinct. The predominant microflora in all soils were 18:1ω9c, 16:1ω7c, cy19:0, a17:0 and 18:0. The indexes of Simpson, Shannon-Wiener and Brillouin of soil microbial community diversity in these four forest types all showed a trend of EBF > CF > SDF > AM. According to principal component analyses (PCA), the variable variances of principal components 1 and 2, which were related to the PLFA biomarkers of soil microorganisms, were 67.67% and 17.91%, respectively. Furthermore, the total PLFAs of different soil microbial groups showed a correlation with soil nutrients and enzyme activities in all forest types. The soil microbial diversity gradually decreased in the order of EBF > CF > SDF > AM in the Daiyun Mountains. Different vegetation types affect soil microbial community composition and diversity by changing the soil physicochemical properties and enzyme activity.

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