Monitoring of soil microbial inoculants and their impact on maize (Zea mays L.) rhizosphere using T-RFLP molecular fingerprint method

Kari, András; Nagymáté, Zsuzsanna; Romsics, Csaba; Vajna, Balázs; Kutasi, József; Puspán, Ildikó; Kárpáti, Éva; Kovács, Rita; Màrialigeti, Károly

doi:10.1016/j.apsoil.2019.03.010

Cited by 21 publications

(8 citation statements)

References 54 publications

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“…This is because of high nutrient availability to support the growth of bacteria by root exudates, thereby amounting to a higher microbial population and diversity of the community in the root region that is not the same as those found in the bulk soils. The report was in line with the study of Kari et al (2019) , which revealed the total count of bacteria cells is 10 8 10 12 CFU in 1g of rhizosphere soils. However, the count is more than the bacterial cells in the bulk soil because of exudates produced by the root and rhizodeposition surrounding the roots in the rhizosphere soil.…”

Section: The Rhizospheresupporting

confidence: 88%

The application of plant growth-promoting rhizobacteria in Solanum lycopersicum production in the agricultural system: a review

Adedayo

Babalola

Prigent‐Combaret

et al. 2022

PeerJ

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Food safety is a significant challenge worldwide, from plantation to cultivation, especially for perishable products such as tomatoes. New eco-friendly strategies are needed, and beneficial microorganisms might be a sustainable solution. This study demonstrates bacteria activity in the tomato plant rhizosphere. Further, it investigates the rhizobacteria’s structure, function, and diversity in soil. Rhizobacteria that promote the growth and development of tomato plants are referred to as plant growth-promoting bacteria (PGPR). They form a series of associations with plants and other organisms in the soil through a mutualistic relationship where both parties benefit from living together. It implies the antagonistic activities of the rhizobacteria to deter pathogens from invading tomato plants through their roots. Some PGPR are regarded as biological control agents that hinder the development of spoilage organisms and can act as an alternative for agricultural chemicals that may be detrimental to the health of humans, animals, and some of the beneficial microbes in the rhizosphere soil. These bacteria also help tomato plants acquire essential nutrients like potassium (K), magnesium (Mg), phosphorus (P), and nitrogen (N). Some rhizobacteria may offer a solution to low tomato production and help tackle food insecurity and farming problems. In this review, an overview of soil-inhabiting rhizobacteria focused on improving the sustainable production of Solanum lycopersicum.

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Section: The Rhizospheresupporting

confidence: 88%

The application of plant growth-promoting rhizobacteria in Solanum lycopersicum production in the agricultural system: a review

Adedayo

Babalola

Prigent‐Combaret

et al. 2022

PeerJ

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“…bacterial small subunit 16S rRNA, fungal ITS), generating a DNA 'fingerprint' of unique fragments, with the size and abundance of each fragment in a soil sample. Although sequencing provides more detailed phylogenetic information, T-RFLP as an automated fingerprinting method is a simpler and less expensive system that allows the comparison of a high amount of soil samples (van Dorst et al 2014), with sufficient replication to address soil microbial patterns of diversity and structure (Fierer and Jackson 2006;Dumbrell et al 2010;Székely and Langenheder 2014;Lange et al 2015;Kari et al 2019). Also, T-RFLP generates results consistent with that found in high throughput sequencing (Vega-Avila et al 2014;Powell et al 2015;Durrer et al 2017;Karczewski et al 2017;De Vrieze et al 2018).…”

Section: Soil Total Dna Extraction and 16s Rrna T-rflpmentioning

confidence: 87%

Biogeographic responses and niche occupancy of microbial communities following long-term land-use change

Goss‐Souza

Tsai

Rodrigues

et al. 2022

Antonie van Leeuwenhoek

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Understanding the effects of forest-to-agriculture conversion on microbial diversity has been a major goal in soil ecological studies. However, linking community assembly to the ruling ecological processes at local and regional scales remains challenging. Here, we evaluated bacterial community assembly patterns and the ecological processes governing niche specialization in a gradient of geography, seasonality, and land-use change, totalizing 324 soil samples, 43 habitat characteristics (abiotic factors), and 16 metabolic and co-occurrence patterns (biotic factors), in the Brazilian Atlantic Rainforest, a subtropical biome recognized as one the world's largest and most threatened hotspots of biodiversity. We observed no significant shifts in alpha diversity due to land-use change.Meanwhile, pairwise beta diversities and distance decays were lower in pastures than those observed for forest and no-till soils. Pasture communities showed a predominantly neutral model, regarding stochastic processes, with moderate dispersion, leading to biotic homogenization. Most no-till and forest microbial communities followed a niche-based model, with low rates of dispersal and weak homogenizing selection, indicating niche specialization or variable selection. Historical and evolutionary contingencies, as represented by soil type, season, and dispersal process were the main drivers of microbial assembly and processes at the local scale, markedly correlated with the occurrence of endemic microbes. Our results indicate that the patterns of assembly and their governing processes are dependent on the niche occupancy of the taxa evaluated (generalists or specialists). They are also more correlated with historical/evolutionary contingencies and the interactions among taxa (i.e. co-occurrence patterns) than the land-use change itself.

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“…Root exudation includes the secretion of enzymes, oxygen and water, ion, mucilage and diverse carbon-containing metabolites. The plant root system produces various metabolites, while the root tips secrete most of the root exudates, which are low molecular weight organic substances (such as amino acids, amides, organic acids, sugars, enzymes, phenolic acids and coumarin), high-molecular-weight compounds (such as proteins and mucilages) and other substances, including sterols that attract bacteria to the rhizosphere [26,27]. However, the components of the exudates vary in the amount released, molecular weight, and biochemical functions.…”

Section: The Rhizosphere Soil As a Treasure Trove For Bacterial Community Concentrationmentioning

confidence: 99%

Elucidating the Rhizosphere Associated Bacteria for Environmental Sustainability

Nwachukwu

Babalola

2021

Agriculture

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The abundance of nutrient accumulation in rhizosphere soils has placed the rhizosphere as an “epicenter” of bacterial concentrations. Nonetheless, over the years, little attention has been given to bacterial inoculants and soil-like substrates. The reason is that many farmers and experiments have focused on chemical fertilizers as an approach to improve plant growth and yield. Therefore, we focused on assessing the application of rhizosphere soil and its associated bacteria for biotechnological applications. This review has been structured into major subunits: rhizosphere soil as a treasure trove for bacterial community concentration, biodegradation of lignocellulose for biofuel production, rhizosphere soil and its bacteria as soil amendments, and the role of rhizosphere soil and its bacteria for bioremediation and biofiltration. Hence, the efficient use of rhizosphere soil and its bacteria in an environmentally friendly way can contribute to healthy and sustainable environments.

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Monitoring of soil microbial inoculants and their impact on maize (Zea mays L.) rhizosphere using T-RFLP molecular fingerprint method

Cited by 21 publications

References 54 publications

The application of plant growth-promoting rhizobacteria in Solanum lycopersicum production in the agricultural system: a review

The application of plant growth-promoting rhizobacteria in Solanum lycopersicum production in the agricultural system: a review

Biogeographic responses and niche occupancy of microbial communities following long-term land-use change

Elucidating the Rhizosphere Associated Bacteria for Environmental Sustainability

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