scholarly journals Biochar Induces Changes to Basic Soil Properties and Bacterial Communities of Different Soils to Varying Degrees at 25 mm Rainfall: More Effective on Acidic Soils

2019 ◽  
Vol 10 ◽  
Author(s):  
Mengyang Zhang ◽  
Muhammad Riaz ◽  
Lin Zhang ◽  
Zeinab El-desouki ◽  
Cuncang Jiang
Keyword(s):  
Soil Properties ◽  
Bacterial Communities ◽  
Acidic Soils ◽  
Different Soils

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.

Method for rapid DNA extraction from bacterial communities of different soils

Microbiology ◽  
2006 ◽  
Vol 75 (1) ◽  
pp. 105-111 ◽  
Author(s):  
E. V. Zaporozhenko ◽  
N. V. Slobodova ◽  
E. S. Boulygina ◽  
I. K. Kravchenko ◽  
B. B. Kuznetsov
Keyword(s):  
Dna Extraction ◽  
Bacterial Communities ◽  
Different Soils

Sorption of fenamiphos to different soils: The influence of soil properties

2008 ◽  
Vol 43 (7) ◽  
pp. 605-610 ◽  
Author(s):  
Tanya P. Cáceres ◽  
Mallavarapu Megharaj ◽  
Ravi Naidu
Keyword(s):  
Soil Properties ◽  
Different Soils

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).

scholarly journals The adsorption of cyanobacterial hepatoxins as a function of soil properties

2005 ◽  
Vol 3 (4) ◽  
pp. 339-347 ◽  
Author(s):  
Megge J. Miller ◽  
John Hutson ◽  
Howard J. Fallowfield
Keyword(s):  
Soil Properties ◽  
Low Cost ◽  
Sorption Isotherms ◽  
Developing Nations ◽  
Natural Process ◽  
Bank Filtration ◽  
Batch Studies ◽  
Toxin Removal ◽  
Positive Correlations ◽  
Different Soils

Cyanobacterial hepatotoxins present a risk to public health when present in drinking water supplies. Existing removal strategies, although efficient, are not economically viable or practical for remote Australian communities and developing nations. Bank filtration is a natural process and a potential low cost, toxin removal strategy. Batch studies were conducted in 12 texturally diverse soils to examine the soil properties influencing the adsorption of the cyanobacterial hepatotoxins, microcystin-LR and nodularin. Sorption isotherms were measured. Freundlich and linear isotherms were observed for both toxins with adsorption coefficients not exceeding 2.75 l kg−1 for nodularin and 3.8 l kg−1 for microcystin. Significant positive correlations were identified between hepatotoxin sorption and clay and silt contents of the soils. Desorption of toxins was also measured in three different soils. Pure nodularin and microcystin-LR readily desorbed from all soils.

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