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Microorganisms
Special Issues
Rhizosphere Microbial Community 3.0
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Rhizosphere Microbial Community 3.0

A special issue of Microorganisms (ISSN 2076-2607). This special issue belongs to the section "Plant Microbe Interactions".

Deadline for manuscript submissions: 31 July 2024 | Viewed by 1073

Special Issue Editor

Dr. Taegun Seo

E-Mail Website
Guest Editor
Department of Life Science, Dongguk University, Goyang 10326, Republic of Korea
Interests: symbiosis; plant growth promoting rhizobacteria (PGPR); rhizosphere; endophytes; plant-microbe interactions
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue is the continuation of our previous Special Issues, “Rhizosphere Microbial Community”, “Rhizosphere Microbial Community 2.0”.

The bacterial community found in the rhizosphere, known for its colonization around the roots due to the availability of nutrients, plays an important role in plant growth and adaptability both directly and indirectly. Various bacteria promote plant root growth to establish their ecological niche in the rhizosphere. Rhizobacteria are involved in plant-growth promotion and are often utilized to improve crop health and productivity. The rhizosphere microbe community has been the focus of extensive research during recent decades, due to its impact on plant sustainability.

More than 99% of soil bacterial species are assumed to be uncultured bacteria. The development of a next-generation sequencing (NGS) technique has allowed us to explore bacterial diversity, providing additional information about culturable and non-culturable plant-associated bacteria. In recent years, many studies have shown that bacterial populations associated with plants have allowed the identification of a large number of novel genera and species. Moreover, whole genome sequencing has enhanced our knowledge of the metabolism and relationship between bacteria and their host.

This Special Issue seeks contributions that explore the native bacterial community and diversity in the rhizosphere of plants, with the aim of sharing new findings on microorganisms’ interactions with plants in the rhizosphere environment. Moreover, it will consist of articles that cover the isolation and characterization of microbes, genomic analyses and agronomic applications. Submissions of research articles, review articles, or short communications related to the rhizosphere microbial community are all welcome, and will help us to make unexpected new discoveries in this area.

Dr. Taegun Seo
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at mdpi.longhoe.net by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Microorganisms is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • rhizosphere
  • endophytes
  • plant-microbe interactions

Related Special Issues

Published Papers (2 papers)

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Research

21 pages, 4561 KiB  
Article
The Effects of Exogenous Benzoic Acid on the Physicochemical Properties, Enzyme Activities and Microbial Community Structures of Perilla frutescens Inter-Root Soil
by Tongtong Xue, Yuxin Fang, Hui Li, Mengsha Li and Chongwei Li
Microorganisms 2024, 12(6), 1190; https://doi.org/10.3390/microorganisms12061190 - 13 Jun 2024
Viewed by 478
Abstract
This study analyzed the effects of benzoic acid (BA) on the physicochemical properties and microbial community structure of perilla rhizosphere soil. The analysis was based on high-throughput sequencing technology and physiological and biochemical detection. The results showed that with the increase in BA [...] Read more.
This study analyzed the effects of benzoic acid (BA) on the physicochemical properties and microbial community structure of perilla rhizosphere soil. The analysis was based on high-throughput sequencing technology and physiological and biochemical detection. The results showed that with the increase in BA concentration, soil pH significantly decreased, while the contents of total nitrogen (TN), alkaline nitrogen (AN), available phosphorus (AP), and available potassium (AK) significantly increased. The activities of soil conversion enzymes urease and phosphatase significantly increased, but the activities of catalase and peroxidase significantly decreased. This indicates that BA can increase soil enzyme activity and improve nutrient conversion; the addition of BA significantly altered the composition and diversity of soil bacterial and fungal communities. The relative abundance of beneficial bacteria such as Gemmatimonas, Pseudolabrys, and Bradyrhizobium decreased significantly, while the relative abundance of harmful fungi such as Pseudogymnoascus, Pseudoeurotium, and Talaromyces increased significantly. Correlation analysis shows that AP, AN, and TN are the main physicochemical factors affecting the structure of soil microbial communities. This study elucidates the effects of BA on the physicochemical properties and microbial community structure of perilla soil, and preliminarily reveals the mechanism of its allelopathic effect on the growth of perilla. Full article
(This article belongs to the Special Issue Rhizosphere Microbial Community 3.0)
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15 pages, 3304 KiB  
Article
Rhizospheric Bacteria of Cover Legumes from Acidic Soils Are Capable of Solubilizing Different Inorganic Phosphates
by Winston F. Ríos-Ruiz, Roy D. Casique-Huamanguli, Renzo A. Valdez-Nuñez, Jose C. Rojas-García, Anderson R. Calixto-García, Franz Ríos-Reátegui, Danny F. Pompa-Vásquez and Euler Padilla-Santa-Cruz
Microorganisms 2024, 12(6), 1101; https://doi.org/10.3390/microorganisms12061101 - 29 May 2024
Viewed by 361
Abstract
Due to its adsorption with aluminum and iron hydroxides, phosphorus viability is low in acidic soils; thus, the aim of this study was to isolate and identify bacteria from the rhizosphere of four legumes growing in acidic soils of the Cumbaza Sub-basin, San [...] Read more.
Due to its adsorption with aluminum and iron hydroxides, phosphorus viability is low in acidic soils; thus, the aim of this study was to isolate and identify bacteria from the rhizosphere of four legumes growing in acidic soils of the Cumbaza Sub-basin, San Martín, Peru, as well as to characterize their ability to solubilize aluminum phosphate and iron phosphate. The isolation process was conducted on TSA medium and the isolates were classified based on their origin and morphocolonial characteristics, with the bacillary shape being the most frequent, followed by cocci. To assess the solubilization of aluminum and iron phosphates, the liquid medium GELP was employed. Sixteen strains were selected, among which three stood out for their effectiveness in solubilizing AlPO4 (Sfcv-098-02, 22.65 mg L−1; Sfc-093-04, 26.50 mg L−1; and Sfcv-041-01-2, 55.98 mg L−1) and one for its ability to solubilize FePO4 (Sfcr-043-02, 32.61 mg L−1). These four strains were molecularly characterized, being identified as Enterobacter sp., Pseudomonas sp., and Staphylococcus sp. Additionally, a decrease in pH was observed in the reactions, with values ranging from 5.23 to 3.29, which enhanced the phosphate of solubilization. This suggests that the selected bacteria could be used to improve phosphorus availability in agricultural soils. Full article
(This article belongs to the Special Issue Rhizosphere Microbial Community 3.0)
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