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Journals
Microorganisms
Special Issues
Plant and Human Probiotics: Consequences on the Autochthonous Microbiota
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Plant and Human Probiotics: Consequences on the Autochthonous Microbiota

A special issue of Microorganisms (ISSN 2076-2607). This special issue belongs to the section "Food Microbiology".

Deadline for manuscript submissions: 30 September 2024 | Viewed by 4378

Special Issue Editors

Dr. Elisa Gamalero

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Guest Editor
Department of Sciences and Technological Innovation, University of Piemonte Orientale, viale T. Michel, 11-15121 Alessandria, Italy
Interests: soil microbial ecology; rhizosphere; plant–microbe interactions; PGPB
Special Issues, Collections and Topics in MDPI journals
Dr. Elisa Bona

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Guest Editor
Dipartimento per lo Sviluppo Sostenibile e la Transizione Ecologica, Università del Piemonte Orientale, 13100 Vercelli, Italy
Interests: soil microbiome; gut microbiome; metaproteome; holobiont
Special Issues, Collections and Topics in MDPI journals
Dr. Giorgia Novello

E-Mail Website
Guest Editor
Department of Sciences and Technological Innovation, University of Piemonte Orientale, viale T. Michel, 11-15121 Alessandria, Italy
Interests: PGPB; plant microbiota; metagenome; metaproteome
Special Issues, Collections and Topics in MDPI journals
Dr. Francesco Vuolo

E-Mail Website1 Website2
Guest Editor
Research and Development, Sacco SRL, 22071 Cadorago, Italy
Interests: plant growth promoters; plant physiology; crop genetics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In 2001, the Food and Agriculture Organization of the United Nations (FAO) and the WHO defined probiotics as “live microorganisms, which, when administered in adequate amounts, confer a health benefit on the host”. This definition, which used the term “host”, overcame the previous definitions, enlarging the applicable range of these microorganisms to not only humans, but also to plants. While human probiotics are well known for their beneficial effects (such as cholesterol reduction, inhibition of carcinogenesis, maintenance of urogenital and gastrointestinal tract health, modulation of the immune system, as well as many other functions), plant probiotics are microorganisms that are able to improve plant nutrient acquisition, suppress soil-borne diseases, and increase the tolerance of plants to environmental stresses. Several studies have been published pertaining to the selection, identification, and characterization of human and plant probiotics, and to their impact on the host. However, once probiotics are introduced into the host, pre-existing balances among the resident members of the microbiota are interrupted, and new, intricate and complex interactions, involving the host, the environment and the probiotics, are created. Many open questions remain regarding how the microbial community is altered after the use of human and plant probiotics (intended both as single strain or artificial consortia) within the autochthonous microbiome. This Special Issue accepts original research, perspectives, minireviews, commentaries, and opinion papers that aim to fill in this gap of knowledge.

Dr. Elisa Gamalero
Dr. Elisa Bona
Dr. Giorgia Novello
Dr. Francesco Vuolo
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com 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

  • plant microbiome
  • plant-microbe interactions
  • human microbiome
  • gut microflora
  • resident microflora

Published Papers (2 papers)

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Research

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21 pages, 4137 KiB  
Article
Development and Evaluation of Bioconverted Milk with Anti-Microbial Effect against Periodontal Pathogens and α-Glucosidase Inhibitory Activity
by Yewon Lee, Yohan Yoon and Kyoung-Hee Choi
Microorganisms 2024, 12(7), 1290; https://doi.org/10.3390/microorganisms12071290 - 25 Jun 2024
Viewed by 876
Abstract
To decrease periodontal pathogens and increase the number of beneficial bacteria, probiotics and bioactive compounds made via microbial bioconversion are recently used. In addition, the interest regarding probiotics-mediated bioconversion with popular medicinal plants is increasing. Artemisia herba-alba, a type of wormwood, has [...] Read more.
To decrease periodontal pathogens and increase the number of beneficial bacteria, probiotics and bioactive compounds made via microbial bioconversion are recently used. In addition, the interest regarding probiotics-mediated bioconversion with popular medicinal plants is increasing. Artemisia herba-alba, a type of wormwood, has recently been attention as a medicinal plant due to its various bioactive compounds. Therefore, we developed bioconverted milk containing A. herba-alba that effectively inhibited periodontal pathogens and α-glucosidase. To select the appropriate lactic acid bacteria for the probiotic candidate strain, 74 strains of lactic acid bacteria were screened. Among them, Lactiplantibacillus plantarum SMFM2016-RK was chosen as the probiotic due to its beneficial characteristics such as high acid and bile tolerance, antioxidant activity, and α-glucosidase inhibition. Based on the minimal bactericidal concentration against three periodontal pathogens, the following appropriate concentrations of Artemisia herba-alba extract were added to milk: 5 mg/mL of A. herba-alba ethanol extract and 25 mg/mL of A. herba-alba hot-water extract. Four bioconverted milks (BM), BM1, BM2, BM3, and BM4, were produced by combining L. plantarum SMFM2016-RK alone, L. plantarum SMFM2016-RK and ethanol extract, L. plantarum SMFM2016-RK and hot-water extract, and L. plantarum SMFM2016-RK with both extracts. As a result of antimicrobial activity, BM3 inhibited the growth of Aggregatibacter actinomycetemcomitans and Porphyromonas gingivalis the most, and BM4 suppressed the growth of Fusobacterium nucleatum the most. In addition, bioconverted milk containing A. herba-alba (BM2, BM3, and BM4) inhibited α-glucosidase more effectively than BM1. The whole genome of L. plantarum SMFM2016-RK was obtained, and 3135 CDS, 67 tRNA, and 16 RNA were predicted. The genome annotation of L. plantarum SMFM2016-RK revealed 11 CDS related to proteolysis and amino acid metabolism and 2 CDS of phenolic acid-metabolizing enzymes. In conclusion, A. herba-alba-added milk bioconverted by L. plantarum SMFM2016-RK displayed both the growth inhibitory effect on periodontal pathogens and the α-glucosidase inhibitory activity; thus, it necessitates to evaluate the effects on the alleviation of periodontal diseases and glycemic control through future animal experiments. Full article
(This article belongs to the Special Issue Plant and Human Probiotics: Consequences on the Autochthonous Microbiota)
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Review

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26 pages, 1907 KiB  
Review
Impact of Plant-Beneficial Bacterial Inocula on the Resident Bacteriome: Current Knowledge and Future Perspectives
by Francesco Vuolo, Giorgia Novello, Elisa Bona, Susanna Gorrasi and Elisa Gamalero
Microorganisms 2022, 10(12), 2462; https://doi.org/10.3390/microorganisms10122462 - 13 Dec 2022
Cited by 14 | Viewed by 2599
Abstract
The inoculation of plant growth-promoting bacteria (PGPB) as biofertilizers is one of the most efficient and sustainable strategies of rhizosphere manipulation leading to increased plant biomass and yield and improved plant health, as well as the ameliorated nutritional value of fruits and edible [...] Read more.
The inoculation of plant growth-promoting bacteria (PGPB) as biofertilizers is one of the most efficient and sustainable strategies of rhizosphere manipulation leading to increased plant biomass and yield and improved plant health, as well as the ameliorated nutritional value of fruits and edible seeds. During the last decades, exciting, but heterogeneous, results have been obtained growing PGPB inoculated plants under controlled, stressful, and open field conditions. On the other hand, the possible impact of the PGPB deliberate release on the resident microbiota has been less explored and the little available information is contradictory. This review aims at filling this gap: after a brief description of the main mechanisms used by PGPB, we focus our attention on the process of PGPB selection and formulation and we provide some information on the EU regulation for microbial inocula. Then, the concept of PGPB inocula as a tool for rhizosphere engineering is introduced and the possible impact of bacterial inoculant on native bacterial communities is discussed, focusing on those bacterial species that are included in the EU regulation and on other promising bacterial species that are not yet included in the EU regulation. Full article
(This article belongs to the Special Issue Plant and Human Probiotics: Consequences on the Autochthonous Microbiota)
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