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Microorganisms publishes Special Issues to create collections of papers on specific topics, with the aim of building a community of authors and readers to discuss the latest research and develop new ideas and research directions. Special Issues are led by Guest Editors, who are experts on the topic and all Special Issue submissions follow MDPI's standard editorial process. The journal’s Editor-in-Chief and/or designated Editorial Board Member will oversee Guest Editor appointments and Special Issue proposals, checking their content for relevance and ensuring the suitability of the material for the journal. The papers published in a Special Issue will be collected and displayed on a dedicated page of the journal’s website. Further information on MDPI's Special Issue policies and Guest Editor responsibilities can be found here. For any inquiries related to a Special Issue, please contact the Editorial Office.

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Advances in the Development of Agricultural Bio-Inputs Based on Microorganisms

edited by

Yuridia Mercado-Flores

submission deadline 31 Jul 2026 | 2 articles | Viewed by 1520 | Submission Open

Keywords: agricultural bioinputs; agricultural microorganisms; microbial biotechnology; applied agricultural microbiology; beneficial microorganisms; bio-based agricultural solutions

(This special issue belongs to the Section Microbial Biotechnology)

State-of-the-Art Environmental Microbiology in China 2026

edited by

Zhiyong Li

submission deadline 31 Jul 2026 | 2 articles | Viewed by 1434 | Submission Open

Keywords: structure and function of microbial communities; microbial community genetics, transcriptomics, proteomics and metabolomics; microbial interaction; microbial communication; microbial ecology; microbial population biology; biogeochemical processes (C, N, P, S cycles); microbial life in extreme environments; evolutionary processes of microbial communities; biofilm formation and the surfaces of microbes; metabolic flux analysis and stable isotope probing (DNA, RNA and protein); microbiome biology of environmental habitats (e.g., soil, rhizosphere or aquifer); microbial treatment: microbial biodegradation, microbial bioremediation, microbial and waste recycling, microbial pesticide, microbial fertilizer, etc.; microbial pollution: pathogenic microorganisms in the environment (water/soil/air/food), microbial metabolism and environmental pollution (e.g., microbial toxin), etc.; microbiological monitoring: testing method and monitoring technique development

(This special issue belongs to the Section Environmental Microbiology)

The Role of Microbiota in Cancer Development and Therapy

edited by

Shengxi Chen

submission deadline 31 Jul 2026 | 1 articles | Viewed by 1421 | Submission Open

Keywords: microbiota; microbiome; cancer; tumorigenesis; dysbiosis; inflammation; immune modulation; gut microbiota; tumor microenvironment; cancer therapy; microbial metabolites; probiotics; cancer prevention

(This special issue belongs to the Section Medical Microbiology)

Breaking Barriers: The Breakdown of Epithelial Defenses by Pathogens

edited by

Karen Bohmwald

submission deadline 31 Jul 2026 | 1 articles | Viewed by 1309 | Submission Open

Keywords: epithelial barrier; blood–brain barrier; barrier breakdown; pathogen invasion; tight junctions; endothelial cells; mucosal immunity; host–pathogen interaction; epithelial remodeling; neuroinvasion; respiratory tract

(This special issue belongs to the Section Medical Microbiology)

Probiotic and Postbiotic Properties of Lactobacillus, 2nd Edition

edited by

Sang-Ho Baik

submission deadline 31 Jul 2026 | 2 articles | Viewed by 1204 | Submission Open

Keywords: Lactobacillus; probiotics; postbiotics; novel probiotic properties; next-generation probiotics

(This special issue belongs to the Section Food Microbiology)

Innovation in Infectious Diseases: Diagnosis, Treatment and Global Challenges

edited by Francesco Cristini, Cristina Seguiti and Paolo Colombini

submission deadline 31 Jul 2026 | 1 articles | Viewed by 1191 | Submission Open

Keywords: antimicrobial stewardship; multidrug-resistant bacteria; fungal infections; tropical and migration medicine; diagnostics

(This special issue belongs to the Section Medical Microbiology)

HIV: Infection and Treatment

edited by

Layla Pagnucco

submission deadline 31 Jul 2026 | 1 articles | Viewed by 1165 | Submission Open

Keywords: HIV; infection; antiretroviral therapy; long acting; future; innovation

(This special issue belongs to the Section Virology)

Microorganisms in Plastics and Bioplastics: Biodegradation, Biosynthesis, and Environmental Impacts

edited by

Alane Beatriz Vermelho

and

Veronica Da Silva Cardoso

submission deadline 31 Jul 2026 | 2 articles | Viewed by 1120 | Submission Open

Keywords: plastic pollution; bioplastics; biodegradation; biosynthesis; synthetic polymers; sustainable development

(This special issue belongs to the Section Environmental Microbiology)

Stress-to-Signal in the Rhizosphere: Plant–Microbiome Communication Under Abiotic Stress

edited by

Juan Ignacio Vílchez

submission deadline 31 Jul 2026 | 1 articles | Viewed by 1100 | Submission Open

Keywords: rhizosphere; drought; salinity; abiotic stress; plant–microbiome interactions; root exudates; microbial signaling; quorum sensing; metagenomics; inoculants

(This special issue belongs to the Section Plant Microbe Interactions)

Biofilm: Formation, Control, and Applications, Second Edition

edited by Huan Gu

submission deadline 31 Jul 2026 | 2 articles | Viewed by 1072 | Submission Open

Keywords: biofilm formation; material properties; cell-to-cell interactions; prevention; removal; control

(This special issue belongs to the Section Biofilm)

Microbial Biotechnology in Biofuels and Bioproducts

edited by Silvia González-Rojo

submission deadline 31 Jul 2026 | 1 articles | Viewed by 947 | Submission Open

Keywords: microbial biotechnology; agro industrial residues; biorefineries; biofuels; biogas; bioplastics; polyhydroxyalkanoates (PHAs); bio-based products; waste valorization; circular bioeconomy

(This special issue belongs to the Section Microbial Biotechnology)

Non-Tuberculous Mycobacteria: Emerging Diseases and Health Impacts, 2nd Edition

edited by

Roger Pickup

and

Gaurav Agrawal

submission deadline 31 Jul 2026 | 1 articles | Viewed by 848 | Submission Open

Keywords: Nontuberculous mycobacteria (NTM); Mycobacterium avium (M. avium); Mycobacterium abscessus (M. abscessus); Mycobacterium ulcerans; Mycobacterium chelonae; Mycobacterium chimaera

(This special issue belongs to the Section Medical Microbiology)

Antimicrobial Ability of Natural Products

edited by

Cristiana Ștefania Novac

and

Sanda Andrei

submission deadline 31 Jul 2026 | 1 articles | Viewed by 795 | Submission Open

Keywords: antimicrobial activity; natural compounds; plant extracts; antibacterial; antifungal; alternatives

(This special issue belongs to the Section Antimicrobial Agents and Resistance)

Epidemiology of Foodborne and Waterborne Diseases

edited by

Apostolos Vantarakis

submission deadline 31 Jul 2026 | 1 articles | Viewed by 654 | Submission Open

Keywords: foodborne diseases; waterborne diseases; epidemiology; outbreak investigation; surveillance; pathogens; risk factors analysis; water safety; food safety; one health; public health; risk assessment

(This special issue belongs to the Section Public Health Microbiology)

Host–Microbiome Interactions: Genomic Analysis of Microbial Community Dynamics in AMR and Immunity

edited by George Popescu,

Mariana Carmen Chifiriuc

and

Veronica Lazar

submission deadline 31 Jul 2026 | Viewed by 549 | Submission Open

Keywords: metagenomics; metatranscriptomics; machine learning; microbial community dynamics; host–pathogen interaction; microbial gene interaction patterns; microbial networks

(This special issue belongs to the Section Molecular Microbiology and Immunology)

Genomic Insights into Microbial Pathogens

edited by

Mihaela Oprea

and Sorin Dinu

submission deadline 31 Jul 2026 | 1 articles | Viewed by 543 | Submission Open

Keywords: human and zoonotic pathogens; transmission; pathogenicity; virulence; antimicrobial resistance; antiviral resistance; phylogeny; whole genome sequencing; typing, molecular epidemiology; metagenomics; host–pathogen interaction

(This special issue belongs to the Section Molecular Microbiology and Immunology)

Emerging Vector-Borne Viruses: Transmission and Epidemiology

edited by Anna Papa

submission deadline 31 Jul 2026 | 1 articles | Viewed by 516 | Submission Open

Keywords: arthropod-borne viruses; emergence; drivers; transmission; vector competence; virus–vector–host interactions; epidemiology; dynamics; environmental factors

(This special issue belongs to the Section Virology)

State-of-the-Art Gut Microbiota in Italy (2025, 2026)

edited by

Maddalena Rossi

and Francesco Candeliere

submission deadline 31 Jul 2026 | Viewed by 442 | Submission Open

Keywords: metagenomics; genomics; gut microbiota; probiotics; microbial ecology; microbial biotechnology

(This special issue belongs to the Section Gut Microbiota)

Bacterial Resistance and Adaptation in the Post-Antibiotic Ban Era

edited by

Abdelaziz Ed-Dra

and

Min Yue

submission deadline 31 Jul 2026 | Viewed by 417 | Submission Open

Keywords: impact of antibiotic bans; antibiotic use; antimicrobial resistance; antibiotic restrictions

(This special issue belongs to the Section Antimicrobial Agents and Resistance)

Implementing Global Research on Sexually Transmitted Infections: A WHO Call to Action

edited by

Luca Roncati

submission deadline 31 Jul 2026 | Viewed by 392 | Submission Open

Keywords: sexually transmitted infections (STIs); Human Papilloma Virus (HPV); cervical cancer; Herpes Simplex Virus (HSV); Hepatitis B Virus (HBV); Hepatitis C Virus (HCV); hepatocellular carcinoma; liver cirrhosis; Human Immunodeficiency Virus (HIV); acquired immunodeficiency syndrome (AIDS); Chlamydia trachomatis; lymphogranuloma venereum; Klebsiella granulomatis; granuloma venereum; Neisseria gonorrhoeae; gonorrhea; Treponema pallidum; syphilis; Haemophilus ducreyi; chancroid; Mycoplasma genitalium; Trichomonas vaginalis

(This special issue belongs to the Section Public Health Microbiology)

Paramecium as Modern Model System, 2nd Edition

edited by

Masahiro Fujishima

submission deadline 31 Jul 2026 | Viewed by 356 | Submission Open

Keywords: mating type; lifespan; parasitism and endosymbiosis; nuclear differentiation; evolution of species and syngen; genome rearrangement; signal transduction; intracellular trafficking; ciliary movement; contractile vacuole; sexual reproduction; surface antigen; environmental adaptation; water purification; use as food

(This special issue belongs to the Section Molecular Microbiology and Immunology)

Combatting Zoonotic Bacterial Infections

edited by

Valentina Virginia Ebani

submission deadline 31 Jul 2026 | Viewed by 317 | Submission Open

Keywords: zoonosis; bacteria; antimicrobial resistance; therapy; prophylaxis; companion animals; livestock; wildlife; exotic animals; animal food products

(This special issue belongs to the Section Veterinary Microbiology)

Human Pathogen Infection and Pathogenesis Mechanisms

edited by

Panagiotis Karanis

submission deadline 31 Jul 2026 | Viewed by 295 | Submission Open

Keywords: viruses; bacteria; fungi; parasites; pathogenicity; control

(This special issue belongs to the Section Medical Microbiology)

Integrating Molecular Biology and Immunodiagnostics for the Control of Zoonotic Diseases

edited by Ronnie Antunes de Assis

submission deadline 31 Jul 2026 | Viewed by 258 | Submission Open

Keywords: zoonosis; diagnosis; control; molecular biology techniques; immunodiagnostic

(This special issue belongs to the Section Molecular Microbiology and Immunology)

Communication Systems in Pathogenic Bacteria and Host Impact

edited by

Domenico Franco

Laura Maria De Plano

and Salvatore Papasergi

submission deadline 31 Jul 2026 | Viewed by 252 | Submission Open

Keywords: bacterial communication; quorum sensing; host–pathogen interaction; virulence regulation; biofilm formation; inter-kingdom signaling; antivirulence strategies

(This special issue belongs to the Section Molecular Microbiology and Immunology)

Microbial Transformations of Arsenic

edited by Qian Wang

submission deadline 31 Jul 2026 | Viewed by 235 | Submission Open

Keywords: arsenic; arsenite; arsenate; methylated arsenic; MMA; DMA; TMA; oxidation; reduction; methylation; demethylation; human gut microbiome; carcinogenesis; environmental and public health; contamination remediation

(This special issue belongs to the Section Environmental Microbiology)

Epidemiology of Zoonotic Pathogens, 2nd Edition

edited by

Mirela Imre

and

Marius Stelian Ilie

submission deadline 31 Jul 2026 | Viewed by 228 | Submission Open

Keywords: zoonotic; pathogen; infection

(This special issue belongs to the Section Veterinary Microbiology)

Advanced Research on Antimicrobial Activity of Natural Products: 2nd Edition

edited by

Anca Zanfirescu

and Corina Andrei

submission deadline 31 Jul 2026 | Viewed by 220 | Submission Open

Keywords: antimicrobial resistance; antimicrobial activity; pathogens; infectious disorders; natural products; anti-infective agents

(This special issue belongs to the Section Antimicrobial Agents and Resistance)

State-of-the-Art Public Health Microbiology in Italy (2026,2027)

edited by

Eleonora Cella

submission deadline 31 Jul 2026 | Viewed by 219 | Submission Open

Keywords: infectious disease; epidemiology; antimicrobial resistance monitoring; molecular epidemiology; pathogen surveillance; genomic epidemiology; bioinformatics

(This special issue belongs to the Section Public Health Microbiology)

Microbiota and Mucosal Immunity

edited by Aline Ignacio, Marcela Davoli-Ferreira and Cristhiane Favero de Aguiar

submission deadline 31 Jul 2026 | Viewed by 188 | Submission Open

Keywords: microbiota; mucosal immunity; innate immunity; adaptive immunity; host–microbiota interactions; barrier tissues; immune regulation

(This special issue belongs to the Section Molecular Microbiology and Immunology)

Virotherapy Based on Oncolytic Adenovirus

edited by

Jorge G. Gomez-Gutierrez

and Paul De Figueiredo

submission deadline 31 Jul 2026 | Viewed by 188 | Submission Open

Keywords: cancer; oncolytic; adenovirus; virotherapy; immunotherapy; combined therapy

(This special issue belongs to the Section Virology)

Chronic HIV Infection, Immune Pathogenesis and Therapy

edited by Guangming Li

submission deadline 31 Jul 2026 | Viewed by 171 | Submission Open

Keywords: HIV-1; HAART; reservoir; inflammation; host immunity; therapeutics

(This special issue belongs to the Section Molecular Microbiology and Immunology)

Beneficial Microorganisms for Sustainable Agriculture

edited by

Tim J. Dumonceaux

and

Christina Eynck

submission deadline 30 Aug 2026 | 10 articles | Viewed by 14206 | Submission Open

Keywords: abiotic stress; biotic stress; biocontrol; biofertilizer; plant–microbe interaction

(This special issue belongs to the Section Plant Microbe Interactions)

Microbial Communities and Their Functions in the Environment

edited by

Jianing Wang

submission deadline 30 Aug 2026 | 1 articles | Viewed by 797 | Submission Open

Keywords: microbial communities; community diversity; community composition; community assembly; environmental microbiology; microbial ecology; microbe–environment interactions

(This special issue belongs to the Section Environmental Microbiology)

Genomic Perspectives on the Ecology and Evolution of Bacterial Plant Pathogens and Symbionts

edited by

Ralf Koebnik

, Jonathan Jacobs and

Veronica Roman-Reyna

submission deadline 30 Aug 2026 | Viewed by 303 | Submission Open

Keywords: plant pathogen; plant symbiont; virulence: host adaptation; tissue tropism; niche occupation; emergence; competition; synergism; transmission

(This special issue belongs to the Section Plant Microbe Interactions)

Host–Microbe Interactions in Respiratory Disease

edited by

Alexander S. Mosig

submission deadline 30 Aug 2026 | Viewed by 262 | Submission Open

Keywords: respiratory microbiome; virome; mycobiome; host immunity; gut–lung axis; multi-omics; dysbiosis; biomarkers; therapeutics; personalized medicine

(This special issue belongs to the Section Medical Microbiology)

Methanotrophs at Work: Leveraging Native and Synthetic Biochemistry for Biotech-Nology, Biomining, and Remediation

edited by

Marina G. Kalyuzhnaya

submission deadline 30 Aug 2026 | Viewed by 237 | Submission Open

Keywords: methanotrophy; biosynthesis; microbial single carbon (c1)-metabolism; microbial communities; environmental microbiology; methane cycling

(This special issue belongs to the Section Microbial Biotechnology)

Probiotics, Prebiotics, and Synbiotics in Animal Nutrition and Health, and Food Safety

edited by María Esther Ortega-Cerrilla

submission deadline 31 Aug 2026 | 5 articles | Viewed by 30580 | Submission Open

Keywords: probiotics; prebiotics; synbiotics; animals; food safety

(This special issue belongs to the Section Food Microbiology)

Surveillance of Health-Relevant Pathogens Employing Wastewater

edited by Bernd Manfred Gawlik and Gernot Marx

submission deadline 31 Aug 2026 | 8 articles | Viewed by 13988 | Submission Open

Keywords: wastewater and environmental surveillance (WES); emerging pathogens; antimicrobial resistance; public health; pathogen monitoring; global health security

(This special issue belongs to the Section Environmental Microbiology)

Research in Hospital Infection Control (3rd Edition)

edited by

Brian Crook

and Claire C. Bailey

submission deadline 31 Aug 2026 | 2 articles | Viewed by 12313 | Submission Open

Keywords: hospital infection control; hospital-acquired infection; healthcare worker; personal protective equipment and hygiene; disease transmission; disinfection; COVID-19

(This special issue belongs to the Section Public Health Microbiology)

Artificial Intelligence as a Tool for Combating Antimicrobial Resistance

edited by

Sergi Maicas

and

Jaume Segura-Garcia

submission deadline 31 Aug 2026 | 4 articles | Viewed by 8495 | Submission Open

Keywords: AI; AMR; drug discovery; datasets; antibiotics

(This special issue belongs to the Section Microbial Biotechnology)

Focus on Pediatric Infectious Diseases

edited by

Katarzyna Mazur-Melewska

submission deadline 31 Aug 2026 | 3 articles | Viewed by 8203 | Submission Open

Keywords: pediatric; infectious diseases; viral infection; bacterial infection; parasites; therapy; epidemiology; immunization

(This special issue belongs to the Section Medical Microbiology)

Bacterial Infections and Antimicrobial Resistance in Animal Populations

edited by

Kwang Won Seo

submission deadline 31 Aug 2026 | 4 articles | Viewed by 8022 | Submission Open

Keywords: zoonotic foodborne bacteria; salmonellosis; antimicrobial resistance; virulence gene; multiple drug resistance; ESBL; beta-lactamases; PMQR; carbapenemases; MRSA

(This special issue belongs to the Section Veterinary Microbiology)

Rumen Microorganisms

edited by

Lizhuang Hao

and Jianbo Zhang

submission deadline 31 Aug 2026 | 7 articles | Viewed by 7529 | Submission Open

Keywords: rumen microbiota; rumen microbial ecology; rumen microbial interactions; rumen microbial metabolism, absorption, and function; bioinformatics and omics; feed conversion efficiency (FCE); methane emission

(This special issue belongs to the Section Veterinary Microbiology)

New Trends in Medical Bacteriology: Diagnosis, Treatment and Prevention—Second Edition

edited by

Norma Velazquez-Guadarrama

and

Ma. Guadalupe Aguilera-Arreola

submission deadline 31 Aug 2026 | 3 articles | Viewed by 6779 | Submission Open

Keywords: medical bacteria; diagnosis; treatment; prevention

(This special issue belongs to the Section Medical Microbiology)

Biological Control of Microbial Pathogens in Plants

edited by Leandro Simões Azeredo Gonçalves

submission deadline 31 Aug 2026 | 8 articles | Viewed by 5778 | Submission Open

Keywords: biological control; microbial pathogens; plant diseases; biopesticides; sustainable agriculture

(This special issue belongs to the Section Plant Microbe Interactions)

Challenges in Combating Antimicrobial Resistance in the Vulnerable Population

edited by Edmond Siu Keung Ma

submission deadline 31 Aug 2026 | 3 articles | Viewed by 4959 | Submission Open

Keywords: antimicrobial resistance; infectious disease; epidemiology; infection control; public health; vulnerable population

(This special issue belongs to the Section Antimicrobial Agents and Resistance)

Microbial Taxonomy and Environmental Metagenomics: Diversity, Dynamics, and Functional Genes

edited by

Cassius V. Stevani

and Renato Sanches Freire

submission deadline 31 Aug 2026 | 6 articles | Viewed by 4945 | Submission Open

Keywords: environmental microbiology; metagenomics; microbial diversity

(This special issue belongs to the Section Environmental Microbiology)

Surveillance of Pathogens in the Environment

edited by

Francesca Pennino

submission deadline 31 Aug 2026 | 3 articles | Viewed by 4903 | Submission Open

Keywords: pathogens; environment; surveillance; epidemiology; health; water; wastewater; surface; air; food

(This special issue belongs to the Section Environmental Microbiology)

Fungal Diversity and Bioactive Potential: From Taxonomy to Therapeutic Applications

edited by

Milena Rašeta

and

Jovana Mišković

submission deadline 31 Aug 2026 | 3 articles | Viewed by 4716 | Submission Open

Keywords: mycology; application of mycology in medicine; biochemical analysis of fungi; fungal diversity; fungal bioactive potential

(This special issue belongs to the Section Environmental Microbiology)

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