Marine Microorganisms and Ecology, 2nd Edition

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

Deadline for manuscript submissions: 31 July 2025 | Viewed by 370

Special Issue Editor


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Guest Editor
Department of Coastal Sciences, The University of Southern Mississippi, Ocean Springs, MS 39564, USA
Interests: VBNC (viable but nonculturable bacteria); vibrio necrotizing fasciitis; antibiotic resistance; plasmid transfer; petroleum degradation; bioremediation
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Special Issue Information

Dear Colleagues,

Marine microorganisms play a key role in shaping marine ecosystems and have a profound impact on global biogeochemical cycles. As the foundation of marine food webs, these tiny but powerful organisms form the basis of life in oceans.

The collection of articles presented in this Special Issue provides a comprehensive overview of cutting-edge research in this field. It explores the diversity and distribution of marine microorganisms, including bacteria, archaea, algae, viruses, and protozoa, as well as their interactions with each other and the surrounding environment. Advanced molecular techniques and innovative sampling methods have opened up new opportunities for advancement, allowing researchers to unearth novel species and understand their ecological functions

Prof. Dr. Darrell Jay Grimes
Guest Editor

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Keywords

  • marine microbiology
  • vibrio
  • antibiotic resistance
  • microbial ecology

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Published Papers (1 paper)

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22 pages, 2109 KiB  
Review
The Competitive Edge: T6SS-Mediated Interference Competition by Vibrionaceae Across Marine Ecological Niches
by Perla Jazmin Gonzalez Moreno and Michele K. Nishiguchi
Microorganisms 2025, 13(6), 1370; https://doi.org/10.3390/microorganisms13061370 - 12 Jun 2025
Viewed by 241
Abstract
Interference competition, wherein bacteria actively antagonize and damage their microbial neighbors, is a key ecological strategy governing microbial community structure and composition. To gain a competitive edge, bacteria can deploy a diverse array of antimicrobial weapons—ranging from diffusible toxins to contact-mediated systems in [...] Read more.
Interference competition, wherein bacteria actively antagonize and damage their microbial neighbors, is a key ecological strategy governing microbial community structure and composition. To gain a competitive edge, bacteria can deploy a diverse array of antimicrobial weapons—ranging from diffusible toxins to contact-mediated systems in order to eliminate their bacterial rivals. Among Gram-negative bacteria, the type VI secretion system (T6SS) has emerged as a potent and sophisticated contact-dependent mechanism that enables the delivery of toxic cargo into neighboring cells, thereby promoting the colonization and dominance of a bacterial taxon within an ecological niche. In this review, we examine the ecological significance of T6SS-mediated interference competition by members of the Vibrionaceae family across a range of marine habitats that include free-living microbial communities and host-associated niches such as coral and squid symbioses. Additionally, we explore the ecological impact of T6SS-mediated competition in modulating biofilm community structure and promoting horizontal gene transfer within those complex microbial populations. Together, these insights underscore the ecological versatility of the T6SS and emphasize its role in driving antagonistic bacterial interactions and shaping microbial community dynamics within marine ecosystems. Full article
(This article belongs to the Special Issue Marine Microorganisms and Ecology, 2nd Edition)
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