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Microorganisms
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Advances in Veterinary Microbiology—2nd Edition
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Advances in Veterinary Microbiology—2nd Edition

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

Deadline for manuscript submissions: 31 August 2026 | Viewed by 887

Special Issue Editor

Dr. Simone Peletto

E-Mail Website
Guest Editor
Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta, 10154 Torino, Italy
Interests: microbiota; metagenomics; viral WGS; phylogeny; molecular typing
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue is a continuation of our previous edition, “Advances in Veterinary Microbiology”.

The Special Issue aims to compile high-quality research and review articles across all fields of veterinary microbiology, seeking to highlight frontier research in food microbiology through selected works. We welcome Editorial Board Members of the Veterinary Microbiology Section of Microorganisms to contribute papers on the latest progress in their research field or invite relevant experts and colleagues to do so.

Topics include, but are not limited to, the following:

  • African swine fever virus;
  • Bluetongue virus;
  • Arboviruses;
  • Microbiota;
  • Metagenomics;
  • Brucellosis.

Dr. Simone Peletto
Guest Editor

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 250 words) can be sent to the Editorial Office for assessment.

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

  • African swine fever virus
  • bluetongue virus
  • arboviruses
  • microbiota
  • metagenomics
  • brucellosis

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Further information on MDPI's Special Issue policies can be found here.

Related Special Issue

Published Papers (2 papers)

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Research

20 pages, 2355 KB  
Article
LIPI-4 as a Critical Modulator of InlB-Mediated Pathogenicity in Listeria monocytogenes
by Yatao Qi, Wenjuan Zhao, Caixia Liu, Ruixuan Qian, Lu Liu, Zhongke Yin, Xun Ma and Jing Wang
Microorganisms 2026, 14(3), 645; https://doi.org/10.3390/microorganisms14030645 - 12 Mar 2026
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Abstract
Listeria monocytogenes (Lm) is a foodborne pathogen whose virulence depends on the coordinated action of multiple virulence factors. Although deletion of either LIPI-4 or inlB reduces the virulence of Listeria monocytogenes, it remains unknown whether these two factors are functionally or regulatory connected. [...] Read more.
Listeria monocytogenes (Lm) is a foodborne pathogen whose virulence depends on the coordinated action of multiple virulence factors. Although deletion of either LIPI-4 or inlB reduces the virulence of Listeria monocytogenes, it remains unknown whether these two factors are functionally or regulatory connected. Therefore, we constructed an inlB deletion mutant and its complemented strain in the Lm928 and ΔLIPI-4 backgrounds. We assessed bacterial growth, biofilm formation, motility, host cell interactions (adhesion, invasion, intracellular proliferation), plaque formation, mouse organ colonization. Growth curve analysis showed no significant differences among strains. qPCR revealed that LIPI-4 modulates inlB expression in a cell-type-specific manner: inlB was downregulated in ΔLIPI-4 under culture and HTR-8 infection, but upregulated during hCMEC/D3 infection—yet functional defects persisted in all cases. Biofilm assays showed that ΔLIPI-4 and the double mutant exhibited enhanced biofilm formation, with the double mutant exceeding ΔLIPI-4, demonstrating synergistic enhancement. Motility assays indicated that LIPI-4 dominates bacterial movement, with ΔLIPI-4 and the double mutant showing identical severe defects. Plaque formation analysis showed that LIPI-4 is essential for cell-to-cell spread, while inlB deletion unexpectedly enhanced plaque formation—an effect completely abolished in the absence of LIPI-4. Host cell assays across Caco-2, HTR-8, and hCMEC/D3 models revealed that LIPI-4 is the core determinant of adhesion, invasion, and intracellular proliferation, whereas inlB contributes in the context of LIPI-4 and its effects vary with the specific cellular process examined. In mice, LIPI-4 was essential for systemic colonization of the liver and spleen, with inlB acting as a co-factor, whereas inlB unexpectedly promoted higher bacterial burdens in the brain, suggesting that inlB modulates LIPI-4-mediated neuroinvasion. Overall, our results establish LIPI-4 as the central determinant of Lm virulence, with inlB acting as a context-dependent co-factor that modulates LIPI-4-mediated pathogenesis in a cell type- and tissue-specific manner. Full article
(This article belongs to the Special Issue Advances in Veterinary Microbiology—2nd Edition)
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14 pages, 2658 KB  
Article
Integrated Metagenomic and Metabolomic Profiling of Boar Semen During Ambient-Temperature Storage
by Haoshi Cheng, Jinyi Han, Kaiyuan Liu, Li Wang, Qiuyu Meng, Chuang Liu, Xuanjun Liu, Mingyu Wang, Feng Yang and Xinjian Li
Microorganisms 2026, 14(3), 560; https://doi.org/10.3390/microorganisms14030560 - 1 Mar 2026
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Abstract
The reproductive efficiency of breeding boars substantially influences swine industry productivity. Sperm viability during ambient-temperature storage is critically affected by environmental factors, including microbial activity. This study aimed to elucidate the dynamics and interactions between the seminal microbiome and metabolome during boar semen [...] Read more.
The reproductive efficiency of breeding boars substantially influences swine industry productivity. Sperm viability during ambient-temperature storage is critically affected by environmental factors, including microbial activity. This study aimed to elucidate the dynamics and interactions between the seminal microbiome and metabolome during boar semen storage at 17 °C. Using integrated 16S rRNA sequencing and untargeted metabolomics, we analyzed semen samples from six healthy boars (31–33 months old) collected at day 0 (control), 2, 4, and 6 of storage. Our results demonstrate that storage leads to a marked decline in microbial diversity, progressive enrichment of the opportunistic genus Proteus, depletion of key antioxidant and cofactor metabolites such as vitamin B6, and extensive metabolic reprogramming—including alterations in short-chain fatty acid, purine, and lipid oxidation pathways. Multi-omics correlation analysis further revealed strong associations between microbial succession and metabolic shifts, highlighting their combined role in driving sperm functional decline. These findings provide a mechanistic basis for improving semen preservation strategies through microbiome and metabolite-targeted interventions. Full article
(This article belongs to the Special Issue Advances in Veterinary Microbiology—2nd Edition)
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