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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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Pathobiology, Infection Biology and Control of Protozoan Parasites—the ONE HEALTH Approach

edited by

Cláudia Marques

Maria João Gouveia

and Susana R. Sousa

submission deadline 15 May 2026 | 4 articles | Viewed by 8395 | Submission Open

Keywords: protozoan parasites; host– parasite interactions; pathobiology; disease control; ONE HEALTH

(This special issue belongs to the Section Veterinary Microbiology)

The Biology of Host–Candida Interactions

edited by

Luca Spaggiari

and

Eva Pericolini

submission deadline 15 May 2026 | Viewed by 284 | Submission Open

Keywords: Candida species; host– pathogen interactions; fungal pathogenesis; host immune response; fungal morphogenesis; biofilm formation; antifungal resistance; microbiota; candidiasis; translational research

(This special issue belongs to the Section Medical Microbiology)

Role of Soil Microorganisms in Agricultural Production and Environmental Biotechnologies

edited by

Gianluigi Cardinali

submission deadline 20 May 2026 | 2 articles | Viewed by 1727 | Submission Open

Keywords: soil; microbiology; bacteria; fungi; biotechnology; agriculture; PGP; BCA; stimulation; plant protection

(This special issue belongs to the Section Environmental Microbiology)

Borreliosis and Other Tick-Borne Diseases in the Northern and Southern Hemispheres, Second Edition

edited by

Giusto Trevisan

submission deadline 30 May 2026 | 2 articles | Viewed by 5806 | Submission Open

Keywords: Lyme disease; Borrelia; diagnosis; tick-borne infections; relapsing fever

(This special issue belongs to the Section Medical Microbiology)

Microbiome-Driven Agriculture: Transforming Sustainability and Resilience Through Functional Microbial Insights and Metagenomics

edited by

Nazrul Islam

submission deadline 31 May 2026 | 9 articles | Viewed by 29865 | Submission Open

Keywords: microbiome; agriculture; metagenomics

(This special issue belongs to the Section Environmental Microbiology)

Role of Dietary Nutrients in the Modulation of Gut Microbiota

edited by

Inês Brandão

and Joana Ferreira-Gomes

submission deadline 31 May 2026 | 3 articles | Viewed by 18115 | Submission Open

Keywords: gut microbiota; diet; immunomodulation; dietary intervention studies

(This special issue belongs to the Section Gut Microbiota)

Understanding the Interactions Between HIV and Other Infections and Their Impact on Immune Function

edited by

Justyna Dominika Kowalska

and Botond Lakatos

submission deadline 31 May 2026 | 4 articles | Viewed by 12840 | Submission Open

Keywords: antimicrobials; natural products; anti-biofilm strategies; anti-microbial resistance; drug delivery; formulations

(This special issue belongs to the Section Medical Microbiology)

Ticks, Tick Microbiome and Tick-Borne Diseases

edited by

Yun Sang Cho

submission deadline 31 May 2026 | 4 articles | Viewed by 12640 | Submission Open

Keywords: ticks; tick-borne diseases; microbiome; tick control; tick-borne pathogens

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

The Microbial Pathogenesis

edited by

Tingting Wang

and Canfeng Hua

submission deadline 31 May 2026 | 9 articles | Viewed by 12416 | Submission Open

Keywords: microbial pathogenesis; virulence factors; host– pathogen interactions; antibiotic resistance; immune evasion; bacterial genomics; fungal infections; viral pathogenesis; molecular microbiology; host immune response

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

Sustainable Waste Biotechnologies: Biodegradation, Biotransformation, and Bioconversion

edited by

Xin Zhao

and Lei Zhang

submission deadline 31 May 2026 | 8 articles | Viewed by 10297 | Submission Open

Keywords: waste biotechnologies; waste management; biodegradation; biotransformation; bioconversion

(This special issue belongs to the Section Environmental Microbiology)

Beneficial Microorganisms for Sustainable Agriculture

edited by

Tim J. Dumonceaux

and

Christina Eynck

submission deadline 31 May 2026 | 8 articles | Viewed by 10233 | Submission Open

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

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

The Microbiome of the Urinary Tract: A Balance Between Eubiosis and Dysbiosis

edited by Michael Chrisofos and

Ilias Giannakodimos

submission deadline 31 May 2026 | 4 articles | Viewed by 10094 | Submission Open

Keywords: microbiome; urinary tract infections; eubiosis and dysbiosis

(This special issue belongs to the Section Medical Microbiology)

Bacterial Pathogenesis and Host Immune Responses

edited by Zhihui Cheng

submission deadline 31 May 2026 | 7 articles | Viewed by 9780 | Submission Open

Keywords: host– pathogen interactions; pathogenic bacteria; pathogenesis; bacterial infections; disease mechanisms; host immune responses; inflammatory responses ; vaccine development; antimicrobial resistance; therapeutic strategies

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

Climate-Driven Effects on the Human Microbiome and Public Health

edited by

Panos Zanos

and Anna Onisiforou

submission deadline 31 May 2026 | 1 articles | Viewed by 9135 | Submission Open

Keywords: climate change; human microbiome; public health

(This special issue belongs to the Section Medical Microbiology)

Microbial Communities and Nitrogen Cycling

edited by Chen Ye,

Yu Gong

and Hao Liao

submission deadline 31 May 2026 | 4 articles | Viewed by 8202 | Submission Open

Keywords: microbial communities; nitrogen cycle; biogeochemical processes; nitrogen fixation; nitrification; denitrification; ammonification; ecosystem health; environmental changes; microbial diversity

(This special issue belongs to the Section Environmental Microbiology)

Microbial Evolutionary Genomics and Bioinformatics

edited by

Agostinho Antunes

submission deadline 31 May 2026 | 6 articles | Viewed by 7760 | Submission Open

Keywords: microbiomes genomics; bacteria genomics diversity and evolution; irus genomics and evolution; microbial pathogenicity genomics; bioinformatics advances in microbial research; microbial-genome-encoded bioactive molecules

(This special issue belongs to the Section Microbiomes)

Soil Microbial Carbon/Nitrogen/Phosphorus Cycling: 2nd Edition

edited by Dan Xiao and Yinhang Xia

submission deadline 31 May 2026 | 7 articles | Viewed by 6027 | Submission Open

Keywords: soil microbiome; nutrient cycling; soil micro-food web; land use change; ecosystem restoration; agricultural management

(This special issue belongs to the Section Environmental Microbiology)

Emerging Diseases in Aquatic Animals

edited by Tran Ngoc Tuan and

Nguyen Dinh-Hung

submission deadline 31 May 2026 | 1 articles | Viewed by 5638 | Submission Open

Keywords: emerging diseases; aquatic animal health; novel pathogens; disease outbreaks; diagnostic innovation

(This special issue belongs to the Section Veterinary Microbiology)

Intestinal Dysbiosis: 2nd Edition

edited by

Giuseppe Merra

submission deadline 31 May 2026 | 2 articles | Viewed by 5091 | Submission Open

Keywords: gut flora; intestinal flora; dysbiosis; inflammatory bowel diseases; leaky gut

(This special issue belongs to the Section Gut Microbiota)

Gut Microbiota and Human Health: From Mechanisms to Therapeutic Frontiers

edited by

Jun-Hyung Cho

submission deadline 31 May 2026 | 5 articles | Viewed by 4268 | Submission Open

Keywords: gut microbiota; host– microbe interaction; Helicobacter pylori; microbiome metabolites; gut– brain axis; probiotics and prebiotics; fecal microbiota transplantation

(This special issue belongs to the Section Gut Microbiota)

Probiotics and Their Health Benefits

edited by Yunhuan Liu

submission deadline 31 May 2026 | 2 articles | Viewed by 3881 | Submission Open

Keywords: probiotics; beneficial microbiota; host health; diseases

(This special issue belongs to the Section Medical Microbiology)

Novel Disinfectants and Antiviral Agents

edited by

Takashi Onodera

submission deadline 31 May 2026 | 4 articles | Viewed by 3866 | Submission Open

Keywords: antibacterial therapies; antiviral therapies; discharge; disinfection; ephedra herb macromolecule condensed- tannin; herb extract; inactivation; sterilization; plasma technology; toxins

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

Harnessing Microbial Power for a Sustainable Future

edited by

Emanuel Vamanu

and Laura Dorina Dinu

submission deadline 31 May 2026 | 2 articles | Viewed by 3851 | Submission Open

Keywords: microbes; sustainability; agricultural productivity; renewable energy; climate change; public health; circular economy; genetically engineered microbes; biopharmaceuticals; microbial biotechnology

(This special issue belongs to the Section Microbial Biotechnology)

The Role of Lactic Acid Bacteria and Their Metabolites in Fermented Foods: From Mechanisms of Action to Technological Applications and Human Health Effects

edited by

Małgorzata Ziarno

submission deadline 31 May 2026 | 2 articles | Viewed by 3738 | Submission Open

Keywords: LAB; fermentation; fermented foods; metabolites; health benefits

(This special issue belongs to the Section Food Microbiology)

Microbes in Wastewater Treatment

edited by Alejandro Rodriguez-Sanchez

submission deadline 31 May 2026 | 2 articles | Viewed by 3510 | Submission Open

Keywords: water pollution; bioremediation; biotechnological processes; wastewater systems; microbial engineering

(This special issue belongs to the Section Environmental Microbiology)

Functional Dietary Components, Gut Microbiota, and Host Health: Interaction Mechanisms and Innovative Product Development

edited by

Zhenjun Zhu

submission deadline 31 May 2026 | 2 articles | Viewed by 2392 | Submission Open

Keywords: prebiotics; probiotics; postbiotics; gut microbiota; host health

(This special issue belongs to the Section Gut Microbiota)

Bacterial Infections in Clinical Settings, 2nd Edition

edited by Viera Lovayová

submission deadline 31 May 2026 | 3 articles | Viewed by 2374 | Submission Open

Keywords: bacterial pathogens; antibiotic resistance; nosocomial infections; sepsis; bacteremia; clinical diagnosis; infection control; microbiological culture; antibiotic therapy; pathogen identification; biofilms; gram-positive bacteria; gram-negative bacteria; hospital-acquired infection (HAI); multidrug-resistant organisms (MDROs); empirical therapy; clinical microbiology; prophylactic antibiotics; infectious disease epidemiology; antimicrobial stewardship

(This special issue belongs to the Section Medical Microbiology)

Microbial Electrolysis Cells and Microbial Fuel Cells

edited by Shuyao Wang

submission deadline 31 May 2026 | 3 articles | Viewed by 2349 | Submission Open

Keywords: bioelectrochemical systems; microbial fuel cell; microbial electrolysis cell; pollution control; cleaner energy production

(This special issue belongs to the Section Microbial Biotechnology)

Advancing Microbial Biotechnology

edited by

Seraphim Papanikolaou

and

Dimitris Karayannis

submission deadline 31 May 2026 | 2 articles | Viewed by 2106 | Submission Open

Keywords: bioproducts; microbial metabolism; bioeconomy; waste and by-product valorisation; bioprocesses; life cycle assessment; recycling; metabolic modeling

(This special issue belongs to the Section Microbial Biotechnology)

Microalgae at the Nexus of Sustainability: From Ecosystem Health to Biotechnological Innovation

edited by

Christopher Q. Lan

and

Siwei Gu

submission deadline 31 May 2026 | 3 articles | Viewed by 1937 | Submission Open

Keywords: microalgae; ; harmful algal blooms; ; wastewater treatment; ; bioremediation; ; biofuels; ; nutraceuticals; ; biorefinery; ; climate change; ; aquatic ecology; ; pollution mitigation; ; Sustainable Development Goals

(This special issue belongs to the Section Environmental Microbiology)

Advances in Microbial Biofilm Formation (2nd Edition)

edited by

Ute Römling

submission deadline 31 May 2026 | 1 articles | Viewed by 1847 | Submission Open

Keywords: commensal; environment; metabolism; multi-disciplinarity; pathogen; second messenger signaling

(This special issue belongs to the Section Biofilm)

Diagnosis, Treatment, and Prevention of Biofilm Infections—How to Proceed?

edited by Niels Høiby and Claus Moser

submission deadline 31 May 2026 | 1 articles | Viewed by 1733 | Submission Open

Keywords: biofilm; biofilm infections; chronic infections; foreign body infections; implant infections

(This special issue belongs to the Section Biofilm)

Microbiome in Fish and Their Living Environment, Second Edition

edited by

Yongjun Chen

and

Gang Yang

submission deadline 31 May 2026 | 3 articles | Viewed by 1731 | Submission Open

Keywords: fish species; gut microbiome; dietary modification; water environment; immunity

(This special issue belongs to the Section Veterinary Microbiology)

Infections in Solid Organ Transplant Recipients: Epidemiology, Pathogenesis, and Clinical Management

edited by

Biagio Pinchera

submission deadline 31 May 2026 | 1 articles | Viewed by 1633 | Submission Open

Keywords: solid organ transplant; transplant-associated infections; bacterial infections; viral infection; fungal infections; antimicrobial resistance; infection management; epidemiology

(This special issue belongs to the Section Medical Microbiology)

Parasitic Infection and Host Immunity, 3rd Edition

edited by

Célio Geraldo Freire-de-Lima

and

Debora Decote-Ricardo

submission deadline 31 May 2026 | 1 articles | Viewed by 1480 | Submission Open

Keywords: infectious diseases; parasite infection; host-parasite interaction; immunomodulation; immunopathology; epidemiology

(This special issue belongs to the Section Medical Microbiology)

Probiotics and Gut Microbiome Dynamics in Health and Disease

edited by

Anastasios Nikolaou

Margaritis Tsifintaris

and

Ilias Tsochantaridis

submission deadline 31 May 2026 | 1 articles | Viewed by 1467 | Submission Open

Keywords: gut microbiota; probiotics; functional foods; fermented foods; maternal– infant microbiome; diet– microbiome interactions; microbial colonization; microbial metabolites; microbiome biomarker; dysbiosis; precision nutrition; host– microbe interactions

(This special issue belongs to the Section Gut Microbiota)

Respiratory Diseases and Microbiome Dysbiosis

edited by

Heleni Loutrari

and Paraskevi Katsaounou

submission deadline 31 May 2026 | 1 articles | Viewed by 1422 | Submission Open

Keywords: upper and lower airway disorders; microbiome; inflammation; immune response; infections; allergies; dysbiosis; gut– lung axis; metagenomics; multi-omics

(This special issue belongs to the Section Microbiomes)

Halophiles

edited by

Cristina Sánchez-Porro

submission deadline 31 May 2026 | 1 articles | Viewed by 1070 | Submission Open

Keywords: obligate halophiles; bacteria; archaea; taxonomy and biodiversity; biotechnology; genomics; metagenomics; physiology and metabolism; hypersaline habitats

(This special issue belongs to the Section Environmental Microbiology)

Advances in Airborne Microbial Communities

edited by Daisuke Tanaka and

Fumito Maruyama

submission deadline 31 May 2026 | 1 articles | Viewed by 1007 | Submission Open

Keywords: microbial community; diversity; air; atmosphere; built environments; monitoring; bacteria; fungi; microorganisms; bioaerosols; health; metagenomics; bioinformatics; infectious diseases; allergies; indoor air quality

(This special issue belongs to the Section Environmental Microbiology)

Advances in Microbial Adaptation and Evolution

edited by

Misty D. Thomas

and

Joseph L. Graves Jr.

submission deadline 31 May 2026 | 1 articles | Viewed by 910 | Submission Open

Keywords: microbial adaptation; experimental evolution; regulatory networks; two-component systems; stress response; pleiotropy; epistasis; antimicrobial resistance; genomic evolution; phenotype-environment interactions

(This special issue belongs to the Section Environmental Microbiology)

Rhizosphere Effectors in Plant–Microbe Interactions

edited by

Dongfei Han

submission deadline 31 May 2026 | 1 articles | Viewed by 867 | Submission Open

Keywords: plant– microbe interaction; innovative effector; rhizosphere effector

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

Advances in Research on Cyanobacteria and Cyanotoxins

edited by

Xi Li

and

Martin A. Stefanov

submission deadline 31 May 2026 | 1 articles | Viewed by 850 | Submission Open

Keywords: cyanobacteria; cyanotoxins; water safety

(This special issue belongs to the Section Environmental Microbiology)

Bacterial Biofilms in Health and Disease

edited by

Bindu Subhadra

submission deadline 31 May 2026 | 1 articles | Viewed by 826 | Submission Open

Keywords: biofilm-related human infections; antimicrobial resistance; microbial pathogens; medical devices; anti-biofilm compounds; antimicrobial surfaces; anti-biofilm therapies

(This special issue belongs to the Section Biofilm)

Fungal and Oomycete Diseases of Oil Palm

edited by

R. Russell M. Paterson

submission deadline 31 May 2026 | 1 articles | Viewed by 671 | Submission Open

Keywords: Elaeis guineensis ; Ganoderma ; Phytophthora; Fusarium ; Malaysia; Colombia

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

Pathogenesis and Host Response Modulation by Porphyromonas gingivalis

edited by

Nityananda Chowdhury

submission deadline 31 May 2026 | Viewed by 557 | Submission Open

Keywords: Porphyromonas gingivalis; functional genomics; host-pathogen interactions; pathogenesis; immune response

(This special issue belongs to the Section Medical Microbiology)

Advances in Legionella pneumophila: Climate Change, Water Safety and Public Health

edited by

Antonios Papadakis

and

Dimosthenis Chochlakis

submission deadline 31 May 2026 | Viewed by 520 | Submission Open

Keywords: Legionella pneumophila; Legionnaires’ disease; climate change; Water Safety Plans; risk assessment and management; environmental and wastewater surveillance; rapid detection methods

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

AI-Driven Insights into Microbial Research: From Data Analysis to Predictive Modeling

edited by

Chien-Sen Liao

submission deadline 31 May 2026 | Viewed by 484 | Submission Open

Keywords: microbiology; artificial intelligence; deep learning; machine learning; microbial genomics; microbiome analysis; data-driven research; predictive modeling; automated image recognition; AI applications in life sciences

Microbial Cell Factories for Sustainable Biomass Protein Production

edited by

Haitao Yu

and

Weiwei Wang

submission deadline 31 May 2026 | Viewed by 453 | Submission Open

Keywords: feed protein; animal science and biotechnology; agricultural synthetic biology; synthetic microbiomes; microbial cell factories; solid-state fermentation; industrial and agricultural waste; microbial genetics and breeding

(This special issue belongs to the Section Microbial Biotechnology)

Microbial Diversity and Ecology in Different Environments

edited by

Diogo Neves Proença

and

Maria Carolina Quecine

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

Keywords: microbial diversity; environmental microbiology; microbiomes; metagenomics; microbial ecology; biotechnological applications; functional genomics; extremophiles; plant-microbe interactions; soil microbiology; marine microbiology; biodegradation; bioactive compounds

(This special issue belongs to the Section Environmental Microbiology)

Antimicrobial Resistance and Virulence of Foodborne Pathogens

edited by