scholarly journals Diversity and composition of soil bacterial community respond to A. palmeri invasion under heterogeneous habitats

2021 ◽  
Author(s):  
Mei Zhang ◽  
Jianhua Han ◽  
Xueying Li ◽  
Pufan Zheng ◽  
Zhenlu Qiu ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Alpha Diversity ◽  
Soil Bacterial Community ◽  
Soil Bacterial Diversity ◽  
Core Microbiome ◽  
Non Invasive ◽  
Heterogeneous Habitats ◽  
Soil Bacterial ◽  
The Impact ◽  
Nmds Analysis

Abstract The impact of A. palmeri invasion on soil bacterial community under different habitats is unclear. In this work, the influence of A. palmeri invasion on soil bacterial diversity and community structure were investigated using full-length 16S rRNA sequencing technology under four typical habitats of riverbank (A), roadside (B), wasteland (C) and farmland (D). A two-way ANOVA analysis showed that habitat, invasion and the interaction of them had little effect on alpha diversity, expect for habitat factor had a significant effect on Simpson indices (P<0.05). NMDS analysis demonstrated that soil bacterial community structures among different invasive habitats were clearly distinguished. In addition, the most abundant phyla in the non-invasive plots were Proteobacteria, Planctomycetes and Gemmatimonadetes. However, the third predominant phyla converted from Bacteroidetes to Gemmatimonadetes with the invasion of A. palmeri. LEfSe analysis revealed that the core microbiome, Burkholderiaceae and Betaproteobacteriales (riverbank habitat), Gemmatimonadetes and Gemmatimonadaceae (wasteland habitat), Sphingomonas_sediminicola (roadside habitat), Nitrosomonadaceae (farmland habitat), which played important roles in facilitating the establishment of A. palmeri to heterogeneous habitats.

scholarly journals Time-Dependent Effect of Graphene on the Microbial Activity of the Soil Under Single and Repeated Exposures

2021 ◽  
Author(s):  
Wenjuan Liu ◽  
Yufeng Guo ◽  
Guoli Chai ◽  
Wenbo Deng
Keyword(s):  
Bacterial Community ◽  
High Throughput Sequencing ◽  
Alpha Diversity ◽  
Soil Bacterial Community ◽  
Soil Bacterial Diversity ◽  
Single Exposure ◽  
Soil Bacterial ◽  
The Difference ◽  
And Function ◽  
The Impact

Abstract Graphene (GR) has huge industrial and biomedical potential, and its adverse effect on soil microorganisms has been evaluated in some ecotoxicological studies. These studies focus on a single exposure to GR, but repeated exposures are more likely to occur in soil. In this study, we compared the impact of single and repeated exposures (one, two and three exposures that resulted in the same final concentration) of GR on structure, abundance and function of soil bacterial community based on soil enzyme activity and high-throughput sequencing. The activities of urease and fluorescein diacetate esterase and alpha diversity demonstrate that repeated exposure to GR increase the diversity of soil bacterial diversity after 4 days of incubation following the last application of GR to soil. And the PCoA and sample level clustering tree showed single exposure to GR after 4 days alter the soil bacterial community to some extent, but the difference has been narrowed with the extension of time. During the entire incubation process, no matter what kind of exposure scenarios to GR, the majority of bacterial phylotypes remained unchanged except for Proteobacteria and Actinobacteria according to the relative abundance of phylotypes.

scholarly journals Time-dependent Effect of Graphene on the Microbial Activity of the Soil Under Single and Repeated Exposures

2022 ◽  
Author(s):  
wenjuan liu ◽  
yufeng guo ◽  
guoli chai ◽  
wenbo deng
Keyword(s):  
Bacterial Community ◽  
High Throughput Sequencing ◽  
Alpha Diversity ◽  
Soil Bacterial Community ◽  
Single Exposure ◽  
Time Dependent Effect ◽  
Soil Bacterial ◽  
And Function ◽  
Clustering Tree ◽  
The Impact

Abstract Graphene (GR) has huge industrial and biomedical potential, and its adverse effect on soil microorganisms has been evaluated in ecotoxicological studies. These studies focus on a single exposure to GR, but repeated exposures are more likely to occur. In this study, we compared the impact of single and repeated exposures of GR on structure, abundance and function of soil bacterial community based on soil enzyme activity and high-throughput sequencing. The activities of urease and fluorescein diacetate esterase and alpha diversity demonstrate that repeated exposure to GR increase the diversity of soil bacteria. The PCoA and sample level clustering tree showed single exposure to GR after 4 days alter the soil bacterial community to some extent. During the entire incubation process, no matter what kind of exposure scenarios to GR, the majority of bacterial phylotypes remained unchanged except for Proteobacteria and Actinobacteria according to the relative abundance of phylotypes.

scholarly journals Regulating soil bacterial diversity, community structure and enzyme activity using residues from golden apple snails

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Jiaxin Wang ◽  
Xuening Lu ◽  
Jiaen Zhang ◽  
Guangchang Wei ◽  
Yue Xiong
Keyword(s):  
Community Structure ◽  
Bacterial Community ◽  
Bacterial Diversity ◽  
Soil Nutrients ◽  
Pomacea Canaliculata ◽  
Soil Bacterial Diversity ◽  
Amended Soils ◽  
Soil Bacterial ◽  
The Impact ◽  
Amended Soil

Abstract It has been shown that the golden apple snail (GAS, Pomacea canaliculata), which is a serious agricultural pest in Southeast Asia, can provide a soil amendment for the reversal of soil acidification and degradation. However, the impact of GAS residue (i.e., crushed, whole GAS) on soil bacterial diversity and community structure remains largely unknown. Here, a greenhouse pot experiment was conducted and 16S rRNA gene sequencing was used to measure bacterial abundance and community structure in soils amended with GAS residue and lime. The results suggest that adding GAS residue resulted in a significant variation in soil pH and nutrients (all P < 0.05), and resulted in a slightly alkaline (pH = 7.28–7.75) and nutrient-enriched soil, with amendment of 2.5–100 g kg−1 GAS residue. Soil nutrients (i.e., NO3-N and TN) and TOC contents were increased (by 132–912%), and some soil exocellular enzyme activities were enhanced (by 2–98%) in GAS residue amended soil, with amendment of 1.0–100 g kg−1 GAS residue. Bacterial OTU richness was 19% greater at the 2.5 g kg−1 GAS residue treatment than the control, while it was 40% and 53% lower at 100 g kg−1 of GAS residue and 50 g kg−1 of lime amended soils, respectively. Firmicutes (15–35%) was the most abundant phylum while Bacterioidetes (1–6%) was the lowest abundant one in GAS residue amended soils. RDA results suggest that the contents of soil nutrients (i.e., NO3-N and TN) and soil TOC explained much more of the variations of bacterial community than pH in GAS residue amended soil. Overuse of GAS residue would induce an anaerobic soil environment and reduce bacterial OTU richness. Soil nutrients and TOC rather than pH might be the main factors that are responsible for the changes of bacterial OTU richness and bacterial community structure in GAS residue amended soil.

scholarly journals Analysis on Characteristics of Vegetation and Soil Bacterial Community under 20 Years’ Restoration of Different Tree Species: A Case Study of the Qinling Mountains

Forests ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 562
Author(s):  
Wanlong Sun ◽  
Xuehua Liu ◽  
Zhaoxue Tian ◽  
Xiaoming Shao
Keyword(s):  
Bacterial Community ◽  
Soil Properties ◽  
Community Composition ◽  
Tree Species ◽  
Bacterial Community Composition ◽  
Alpha Diversity ◽  
Soil Bacterial Community ◽  
Growth Speed ◽  
Qinling Mountains ◽  
Soil Bacterial

Afforestation with different tree species formed different vegetation patterns, and altered soil properties and the composition and diversity of the soil bacterial community. In order to analyze the difference characteristics of vegetation, soil and bacterial community after 20 years’ restoration of different tree species, we investigated changes in vegetation (tree, shrubs, and herbs), soil properties and the soil bacterial community composition in the topsoil (0–10 cm) following afforestation of P. asperata Mast. and L. kaempferi (Lamb.) Carr.on the southern slope of the Qinling mountains. The results showed that, within a 20-year recovery period, the restorative effect of L. kaempferi was better than that of P. asperata, for alpha diversity and biomass of vegetation, composition and diversity of soil bacterial community were all preferable under nearly same environmental conditions if just taking these indices into consideration. Additionally, biodiversity of L. kaempfer was much richer than that of P. asperata. Our observations suggest that soil physicochemical properties, soil bacterial community composition and diversity following afforestation were mainly affected by tree species. The results could explain our hypothesis to some extent that a planted forest with quick growth speed and sparse canopy has higher biomass productivity and alpha diversity of ecosystem.

scholarly journals Organic Amendments and Sampling Date Influences on Soil Bacterial Community Composition and Their PredictiveFunctional Profiles in an Olive Grove Ecosystem

Agriculture ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1178
Author(s):  
Laura L. de Sosa ◽  
Beatriz Moreno ◽  
Rafael Alcalá Alcalá Herrera ◽  
Marco Panettieri ◽  
Engracia Madejón ◽  
...  
Keyword(s):  
Microbial Community ◽  
Bacterial Community ◽  
Agricultural Soils ◽  
Soil Microbial Communities ◽  
Soil Bacterial Community ◽  
Olive Grove ◽  
Soil Microbial Diversity ◽  
Soil Microbial ◽  
Soil Bacterial ◽  
The Impact

A collapse of soil microbial diversity, mainly due to chemical inputs, has been reported to lead to the degradation of conventional agroecosystems. The use of compost from urban and agricultural waste management, in order to achieve a net gain in the storage of C, is an adequate management of agricultural soils, especially in rainfed conditions. However, the great variability of composts of different maturity and origins and of the soils to which they are added limits the ability to predict the impact of these amendments on the dynamics of soil microbial communities. This study was designed to gain insights on the effect of exogenous organic matter management on the soil bacterial community and its contribution to key functions relevant to agricultural soils. To achieve this, two different types of compost (alperujo or biosolids composts) at two doses were used as soil amendments twice for 3 years in a rainfed olive grove ecosystem. A metagenomic analysis was carried out to assess the abundance and composition of the soil bacterial communities and predicted functions. We only detected a minor and transitory effect on the bacterial abundance of the soil, the structure of the community and the potential functions, less related to the dose or the type of compost than to seasonal variations. Although the result suggests that the soil bacteria were highly resilient, promoting community stability and functional resilience after the addition of the two composts, more efforts are necessary to assess not only the resulting soil microbial community after organic fertilization but the intrinsic microbial community within the organic amendment that acts as an inoculum, and to what extent the changes in its dose could lead to the functionality of the soil.

The impact of iron oxide magnetic nanoparticles on the soil bacterial community

2011 ◽  
Vol 11 (8) ◽  
pp. 1408-1417 ◽  
Author(s):  
Shiying He ◽  
Youzhi Feng ◽  
Hongxuan Ren ◽  
Yu Zhang ◽  
Ning Gu ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Magnetic Nanoparticles ◽  
Bacterial Community ◽  
Soil Bacterial Community ◽  
Iron Oxide Magnetic Nanoparticles ◽  
Soil Bacterial ◽  
The Impact

scholarly journals Effects of novel bioorganic fertilizer application on soil enzymes and bacterial community in multi-site rice paddies in China

AMB Express ◽  
2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Zuren Li ◽  
Jincai Han ◽  
Haodong Bai ◽  
Di Peng ◽  
Lifeng Wang ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Field Experiments ◽  
Chemical Properties ◽  
Soil Bacterial Community ◽  
General Function ◽  
Rice Paddies ◽  
Phylogenetic Groups ◽  
Total N ◽  
Bioorganic Fertilizer ◽  
Soil Bacterial

AbstractApplication of a novel bioorganic fertilizer (BIO) has been effectively used to inhibit weeds in rice paddies. To identify changes in soil bacterial community and enzymes in response to BIO treatments, field experiments were carried out in five major rice-growing areas in China. The dominant phylogenetic groups recorded included Proteobacteria, Actinobacteria, Bacteroidetes, Firmicutes and Acidobacteria. Anaeromyxobacter, Bacteroides, Bifidobacterium, Escherichia- Shigella, Geobacter and Haliangium were significantly different between BIO-treatment and untreated control and aided in general function (R), amino acid transport, metabolism (E) and transcription (K) clusters. The soil chemical properties and enzyme activities were less affected by BIO at these study sites. RDA analysis showed that soil bacterial community had a significant positive correlations among northern latitude, eastern longitude, exchangeable K, total K, total P, soil pH, and total N, except for organic matter, hydrolytic N and extractable P. Overall, our work showed that application of BIO does not alter the main community structure and functional diversity of soil bacteria in rice paddies and should be encouraged for use as a sustainable weed management strategy.

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