Effects of chicken farming on soil properties and root-associated bacterial communities in a bamboo (Phyllostachys praecox) ecosystem

2021 ◽  
Vol 157 ◽  
pp. 103725
Author(s):  
Xiaoping Zhang ◽  
Xu Gai ◽  
Chuanbao Yang ◽  
Jiafu Ying ◽  
Weifen Li ◽  
...  
Keyword(s):  
Soil Properties ◽  
Bacterial Communities ◽  
Phyllostachys Praecox

scholarly journals Climatic Zone and Soil Properties Determine the Biodiversity of the Soil Bacterial Communities Associated to Native Plants from Desert Areas of North-Central Algeria

2021 ◽  
Vol 9 (7) ◽  
pp. 1359
Author(s):  
Elisa Bona ◽  
Nadia Massa ◽  
Omrane Toumatia ◽  
Giorgia Novello ◽  
Patrizia Cesaro ◽  
...  
Keyword(s):  
Soil Properties ◽  
Bacterial Communities ◽  
Arid Environment ◽  
Climatic Zone ◽  
Indigenous Plants ◽  
North Central ◽  
The North ◽  
Desert Areas ◽  
Plant Microbiota ◽  
Semi Arid

Algeria is the largest country in Africa characterized by semi-arid and arid sites, located in the North, and hypersaline zones in the center and South of the country. Several autochthonous plants are well known as medicinal plants, having in common tolerance to aridity, drought and salinity. In their natural environment, they live with a great amount of microbial species that altogether are indicated as plant microbiota, while the plants are now viewed as a “holobiont”. In this work, the microbiota of the soil associated to the roots of fourteen economically relevant autochthonous plants from Algeria have been characterized by an innovative metagenomic approach with a dual purpose: (i) to deepen the knowledge of the arid and semi-arid environment and (ii) to characterize the composition of bacterial communities associated with indigenous plants with a strong economic/commercial interest, in order to make possible the improvement of their cultivation. The results presented in this work highlighted specific signatures which are mainly determined by climatic zone and soil properties more than by the plant species.

Wetland Soil Properties and Resident Bacterial Communities Are Influenced by Changes in Elevation

Wetlands ◽  
2018 ◽  
Vol 39 (1) ◽  
pp. 99-112 ◽  
Author(s):  
Philip O. Lee ◽  
Cory Shoemaker ◽  
Julie B. Olson
Keyword(s):  
Soil Properties ◽  
Bacterial Communities ◽  
Wetland Soil

scholarly journals Effect of straw biochar amendment on tobacco growth, soil properties, and rhizosphere bacterial communities

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jiayu Zheng ◽  
Jixu Zhang ◽  
Lin Gao ◽  
Rui Wang ◽  
Jiaming Gao ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Soil Properties ◽  
Bacterial Communities ◽  
Agronomic Traits ◽  
Diversity Indices ◽  
Community Diversity ◽  
High Dose ◽  
Rhizosphere Soils ◽  
Tobacco Growth ◽  
Biochar Amendment

AbstractBiochar is an effective soil conditioner. However, we have limited understanding of biochar effects on the tobacco growth and bacterial communities in rhizosphere. The aim of this study was to investigate the effects of different straw biochar amendment (0, 2, 10, and 50 g/kg dry soil) on tobacco growth, soil properties, and bacterial communities in rhizosphere by pot trials. Most of tobacco agronomic traits increased when the application rate varied from 0 to 10 g/kg, but were inhibited by 50 g/kg of biochar application. Soil pH, SOC, available nutrients and soil urease, invertase, and acid phosphatase activities were all increased with the biochar application, whereas catalase activity decreased or remained unchanged. The OTUs and bacterial community diversity indices differed with the biochar application doses in rhizosphere and non-rhizosphere soils. And significant differences in bacterial communities were found between the rhizosphere and non-rhizosphere soils despite the biochar addition. Firmicutes, Proteobacteria, Acidobacteria, Bacteroidetes, and Actinobacteria were the dominant phyla in all soil samples, but they had different abundances in different treatment influenced by the rhizosphere and biochar effect. The high dose of biochar (50 g/kg) decreased the similarity of soil bacterial community structure in rhizosphere compared with those in non-rhizosphere soil. These results provide a better understanding of the microecological benefits of straw biochar in tobacco ecosystem.

scholarly journals Variation in the nitrous oxide reductase gene (nosZ)-denitrifying bacterial community in different primary succession stages in the Hailuogou Glacier retreat area, China

2019 ◽  
Author(s):  
Yan Bai ◽  
Xiying Huang ◽  
Xiangrui Zhou ◽  
Quanju Xiang ◽  
Ke Zhao ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Bacterial Community ◽  
Soil Properties ◽  
Bacterial Communities ◽  
Redundancy Analysis ◽  
Primary Succession ◽  
Available Phosphorus ◽  
Nitrous Oxide Reductase ◽  
Reductase Gene ◽  
Successional Stages

Background: The Hailuogou Glacier in the Gongga Mountain region (SW China), on the southeastern edge of the Tibetan Plateau, is well known for its low-elevation modern glaciers. Since the end of the Little Ice Age (LIA), the Hailuogou Glacier has retreated continuously due to global warming, primary vegetation succession and soil chronosequence have developed in this retreat area. The retreated area of Hailuogou Glacier has not been strongly disturbed by human activities, thus it is an ideal models for exploring the biological colonization of nitrogen in the primary successional stages of ecosystem. The nosZ gene encodes the catalytic center of nitrous oxide reductase and is an ideal molecular marker in studying the variation in the denitrifying bacterial community. Methods: Soil properties as well as abundance and composition of the denitrifying bacterial community were determined via chemical analysis, quantitative polymerase chain reaction (qPCR), and terminal restriction fragment length polymorphism (T-RFLP), respectively. The relationships between the nosZ denitrifying bacterial community and soil properties were determined using redundancy analysis (RDA). Soil properties, potential denitrify activity (PDA), and the nitrous oxide reductase gene (nosZ)-denitrifying bacterial communities significantly differed among successional stages. Results: Soil properties, potential denitrify activity (PDA), and the nitrous oxide reductase gene (nosZ)-denitrifying bacterial communities significantly differed among successional stages. Soil pH in the topsoil decreased from 8.42 to 7.19 in the course of primary succession, while soil organic carbon (SOC) and total nitrogen (TN) gradually increased with primary succession. Available phosphorus (AP) and available potassium (AK), as well as potential denitrify activity (PDA), increased gradually and peaked at the 40-year-old site. The abundance of the nosZ denitrifying bacterial community followed a similar trend. The variation in the denitrifying community composition was complex; Mesorhizobium dominated the soil in the early successional stages (0-20 years) and in the mature phase (60 years), with a relative abundance greater than 55%. Brachybacterium was increased in the 40-year-old site, with a relative abundance of 62.74%, while Azospirillum dominated the early successional stages (0-20 years). Redundancy analysis (RDA) showed that the nosZ denitrifying bacterial community correlated with soil available phosphorus and available potassium levels (P < 0.01).

Soil properties and habitats determine the response of bacterial communities to agricultural wastewater irrigation

Pedosphere ◽  
2020 ◽  
Vol 30 (1) ◽  
pp. 146-158 ◽  
Author(s):  
Sascha M.B. KRAUSE ◽  
Anja B. DOHRMANN ◽  
Osnat GILLOR ◽  
Bent T. CHRISTENSEN ◽  
Ines MERBACH ◽  
...  
Keyword(s):  
Soil Properties ◽  
Bacterial Communities ◽  
Wastewater Irrigation ◽  
Agricultural Wastewater

scholarly journals Bacterial Communities in the Rhizosphere and Phyllosphere of Halophytes and Drought-Tolerant Plants in Mediterranean Ecosystems

2020 ◽  
Vol 8 (11) ◽  
pp. 1708
Author(s):  
Savvas Genitsaris ◽  
Natassa Stefanidou ◽  
Kleopatra Leontidou ◽  
Theodora Matsi ◽  
Katerina Karamanoli ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Soil Properties ◽  
Bacterial Communities ◽  
Mediterranean Ecosystems ◽  
Community Diversity ◽  
Sampling Location ◽  
Rrna Gene ◽  
Sodic Soils ◽  
Drought Tolerant ◽  
Tolerant Plants

The aim of the study was to investigate the bacterial community diversity and structure by means of 16S rRNA gene high-throughput amplicon sequencing, in the rhizosphere and phyllosphere of halophytes and drought-tolerant plants in Mediterranean ecosystems with different soil properties. The locations of the sampled plants included alkaline, saline-sodic soils, acidic soils, and the volcanic soils of Santorini Island, differing in soil fertility. Our results showed high bacterial richness overall with Proteobacteria and Actinobacteria dominating in terms of OTUs number and indicated that variable bacterial communities differed depending on the plant’s compartment (rhizosphere and phyllosphere), the soil properties and location of sampling. Furthermore, a shared pool of generalist bacterial taxa was detected independently of sampling location, plant species, or plant compartment. We conclude that the rhizosphere and phyllosphere of native plants in stressed Mediterranean ecosystems consist of common bacterial assemblages contributing to the survival of the plant, while at the same time the discrete soil properties and environmental pressures of each habitat drive the development of a complementary bacterial community with a distinct structure for each plant and location. We suggest that this trade-off between generalist and specialist bacterial community is tailored to benefit the symbiosis with the plant.

scholarly journals Gentamicin Adsorption onto Soil Particles Prevents Overall Short-Term Effects on the Soil Microbiome and Resistome

Antibiotics ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 191
Author(s):  
Concepcion Sanchez-Cid ◽  
Alexandre Guironnet ◽  
Laure Wiest ◽  
Emmanuelle Vulliet ◽  
Timothy M. Vogel
Keyword(s):  
Antibiotic Resistance ◽  
Soil Properties ◽  
Bacterial Communities ◽  
Bacterial Biomass ◽  
Soil Microbiome ◽  
Metagenomic Sequencing ◽  
Short Term ◽  
Soil Particles ◽  
16Srrna Gene ◽  
Short Term Effects

Antibiotics used in agriculture may reach the environment and stimulate the development and dissemination of antibiotic resistance in the soil microbiome. However, the scope of this phenomenon and the link to soil properties needs to be elucidated. This study compared the short-term effects of a range of gentamicin concentrations on the microbiome and resistome of bacterial enrichments and microcosms of an agricultural soil using a metagenomic approach. Gentamicin impact on bacterial biomass was roughly estimated by the number of 16SrRNA gene copies. In addition, the soil microbiome and resistome response to gentamicin pollution was evaluated by 16SrRNA gene and metagenomic sequencing, respectively. Finally, gentamicin bioavailability in soil was determined. While gentamicin pollution at the scale of µg/g strongly influenced the bacterial communities in soil enrichments, concentrations up to 1 mg/g were strongly adsorbed onto soil particles and did not cause significant changes in the microbiome and resistome of soil microcosms. This study demonstrates the differences between the response of bacterial communities to antibiotic pollution in enriched media and in their environmental matrix, and exposes the limitations of culture-based studies in antibiotic-resistance surveillance. Furthermore, establishing links between the effects of antibiotic pollution and soil properties is needed.

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