Cowpea nodules host a similar bacterial community regardless of soil properties

2022 ◽  
Vol 172 ◽  
pp. 104354
Author(s):  
Marineide Rodrigues Amorim ◽  
Lucas William Mendes ◽  
Jadson Emanuel Lopes Antunes ◽  
Louise Melo de Souza Oliveira ◽  
Vania Maria Maciel Melo ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Soil Properties

scholarly journals Bacillus amyloliquefaciens FH-1 significantly affects cucumber seedlings and the rhizosphere bacterial community but not soil

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jingjing Wang ◽  
Song Xu ◽  
Rong Yang ◽  
Wei Zhao ◽  
Dan Zhu ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Soil Properties ◽  
Bacillus Amyloliquefaciens ◽  
Soil Conditions ◽  
Plant Growth Promoting Bacteria ◽  
Linear Discriminant ◽  
Cucumber Seedlings ◽  
Ecological Roles ◽  
Plant Growth Promoting ◽  
Rhizosphere Bacterial Community

AbstractPlant growth-promoting bacteria (PGPB) inoculants have been applied worldwide. However, the ecological roles of PGPB under different soil conditions are still not well understood. The present study aimed to explore the ecological roles of Bacillus amyloliquefaciens FH-1 (FH) on cucumber seedlings, rhizosphere soil properties, and the bacterial community in pot experiments. The results showed that FH had significant effects on cucumber seedlings and the rhizosphere bacterial community but not on soil properties. The FH promoted cucumber seedlings growth, reduced the rhizosphere bacterial diversity, increased Proteobacteria, and decreased Acidobacteria. Linear discriminant analysis (LDA) effect size (LEfSe) revealed that FH enriched two taxa (GKS2_174 and Nannocystaceae) and inhibited 18 taxa (mainly Acidobacteria, Actinobacteria, BRC1, Chloroflexi, Plantctomycetes, and Verrucomicrobia). Co-occurrence network analysis demonstrated that FH increased bacteria-bacteria interactions and that Bacillus (genus of FH) had few interactions with the enriched and inhibited taxa. This might indicate that FH does not directly affect the enriched and inhibited taxa. Correlation analysis results displayed that cucumber seedlings’ weight and height/length (except root length) were significantly correlated with the 18 inhibited taxa and the enriched taxa Nannocystaceae. It was speculated that FH might promote cucumber seedling growth by indirectly enriching Nannocystaceae and inhibiting some taxa from Acidobacteria, Actinobacteria, BRC1, Chloroflexi, Plantctomycetes, and Verrucomicrobia.

scholarly journals Erratum: Furtak, K., et al. Analysis of Soil Properties, Bacterial Community Composition, and Metabolic Diversity in Fluvisols of a Floodplain Area. Sustainability 2019, 11, 3929

2019 ◽  
Vol 11 (21) ◽  
pp. 6020 ◽  
Author(s):  
Karolina Furtak ◽  
Jarosław Grządziel ◽  
Anna Gałązka ◽  
Jacek Niedźwiecki
Keyword(s):  
Bacterial Community ◽  
Soil Properties ◽  
Community Composition ◽  
Bacterial Community Composition ◽  
Metabolic Diversity ◽  
Floodplain Area ◽  
Published Paper

The authors would like to make the following correction about the published paper [...]

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 Distribution and Influence on the Microbial Ecological Relationship of Antibiotic Resistance Genes in Soil at a Watershed Scale

2021 ◽  
Vol 13 (17) ◽  
pp. 9748
Author(s):  
Yi-Long Hao ◽  
Gang Li ◽  
Zu-Fei Xiao ◽  
Ning Liu ◽  
Muhammad Azeem ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
Bacterial Community ◽  
Soil Properties ◽  
River Basin ◽  
Resistance Genes ◽  
Toxic Metals ◽  
Antibiotic Resistance Genes ◽  
Watershed Scale ◽  
Macro Scale ◽  
Ecological Relationship

Antibiotic resistance genes (ARGs) are ubiquitous in the environment, with previous studies mainly focusing on the terrestrial ecosystem, which is prone to higher antibiotic application. However, the characteristics, distribution pattern, and driving factors of soil ARGs at the macro scale are still unclear. In this study, the soil ARGs, antibiotics, mobile genetic elements (MGEs), soil properties, toxic metals, polycyclic aromatic hydrocarbons (PAHs), and bacterial community in the Taipu River Basin were analyzed to investigate the distribution and dissemination of ARGs at a watershed scale. The results revealed that ARGs were widespread in the soils along the Taipu River, and that ARG profiles varied greatly with different types of land use, but showed regional similarities. The characteristics were mainly determined by antibiotic input and the ARG transmission mediated by MGEs. The order of the contribution of environmental factors to ARG distribution was toxic metals > PAHs > soil properties. Toxic metal pollution was coupled with ARGs through MGE mediation, while PAHs and soil properties were most likely to affect the ARG distribution by shifting the bacterial community. The microbial–ecological relationship changed significantly with the enrichment of ARGs, and its impact may extend to the watershed scale. Transposon IS1247 can be used as an indicator of the ARGs impact on the microbial ecological relationship in the soils of the Taipu River Basin.

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 Correlation between Soil Bacterial Community Structure and Soil Properties in Cultivation Sites of 13-Year-Old Wild-Simulated Ginseng (Panax ginseng C.A. Meyer)

2021 ◽  
Vol 11 (3) ◽  
pp. 937
Author(s):  
Kiyoon Kim ◽  
Hyun Jun Kim ◽  
Dae Hui Jeong ◽  
Jeong Hoon Huh ◽  
Kwon Seok Jeon ◽  
...  
Keyword(s):  
Medicinal Plants ◽  
Bacterial Community ◽  
Soil Properties ◽  
Far East ◽  
Chemical Properties ◽  
Well Being ◽  
Exchange Capacity ◽  
Edaphic Factor ◽  
Growing Conditions ◽  
Major Factors

Soil properties are one of the major factors determining the growth of vegetation. These properties drive the selection of the dominant bacterial community profiles, which eventually determines the soil quality and fertility. The abundance of preferential bacterial community assists in better productivity of a particular type of vegetation. The increasing focus on the health and well-being of the human population has resulted in a shift in paradigm to concentrate on the cultivation of medicinal plants such as Wild-simulated ginseng (WSG). These plant species take a long time for their growth and are generally cultivated in the mountainous forest trenches of Far East countries like South Korea. This study was conducted to decipher the bacterial community profiles and their correlation with soil chemical properties, which would give a broader idea about the optimum growing conditions of such an important medicinal plant. The important edaphic factor determined in this study was the soil pH, which was recorded to be acidic in all the studied cultivation sites. In agreement with the edaphic factor, the relative abundance of Acidobacteria was found to be highest as this phylum prefers to grow in acidic soils. Moreover, the total organic matter, total nitrogen and cation exchange capacity were found to be significantly correlated with the bacterial community. Hence, these results will help to identify the suitable cultivation sites for WSG and increase the productivity of these medicinal plants.

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.

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