Coral Microbiome and Microbial Ecology

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

Deadline for manuscript submissions: 31 January 2026 | Viewed by 1154

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Guest Editor
Avram and Stella Goldstein-Goren Department of Biotechnology Engineering, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105, Israel
Interests: coral ecology; coral culture; marine microbilogy
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Dear Colleagues,

Corals are cosmopolitan marine organisms found in all environments ranging from shallow to deep seas and from warm to very cold environments. They are an evolutionarily ancient group of organisms, originating 415 million years ago.  Of these, scleractinian, or stony corals, are the basis of coral reefs that make up vast oceanographic structures such as barrier and fringing reefs, as well as island atolls. These reefs provide shelter to shorelines, a source of food and pleasure for many countries and important sources of novel biomaterials. The evolutionary success of corals is due in part to their complex associations with a variety of microorganisms ranging from protists to bacteria and viruses. The close association between coral animal hosts and their accompanying microorganisms has resulted in their definition as holobionts. These associations range from parasitic to mutualistic in nature, playing important roles in coral health, nutrition, physical protection, and disease mitigation. Understanding the nature of these associations provides an important impetus to the ongoing study of microbial ecology of corals. This Special Issue provides a glimpse into the varied associations between corals and their accompanying microorganisms in an attempt to elucidate the diverse roles of these microorganisms in these holobionts’ ecological and evolutionary success.

Dr. Esti Kramarsky-Winter
Guest Editor

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Keywords

  • coral
  • holobiont
  • microbiota
  • polyp
  • protist
  • skeleton
  • microbiome

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Published Papers (1 paper)

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Research

17 pages, 4160 KB  
Article
Photoendosymbiosis of the Blue Subtropical Montipora Corals of Norfolk Island, South Pacific
by Sophie Vuleta, William P. Leggat and Tracy D. Ainsworth
Microorganisms 2025, 13(9), 2155; https://doi.org/10.3390/microorganisms13092155 - 16 Sep 2025
Viewed by 419
Abstract
Corals exhibit complex and diverse relationships with dinoflagellates of the family Symbiodiniaceae. Montiporid corals within Norfolk Island’s shallow water lagoonal reef systems have been observed to turn a deep fluorescent blue during winter, suggesting potential environmentally driven changes to their photoendosymbiosis. Here, we [...] Read more.
Corals exhibit complex and diverse relationships with dinoflagellates of the family Symbiodiniaceae. Montiporid corals within Norfolk Island’s shallow water lagoonal reef systems have been observed to turn a deep fluorescent blue during winter, suggesting potential environmentally driven changes to their photoendosymbiosis. Here, we investigate the photoendosymbiosis of blue Montipora sp. corals over a year-long study, demonstrating that photosynthetic yield and Symbiodiniaceae densities vary seasonally, with the lowest photosynthetic yield occurring within winter periods. We also provide the first characterisation of Symbiodiniaceae species associated with corals from Norfolk Island, identifying blue Montipora sp. as predominantly associating with Cladocopium (formerly Clade C) genotypes (C3aap, C3ig, and C3aao). Finally, we also report on the impact of recent bleaching conditions (March 2024) on blue Montipora sp. photoendosymbiosis and find the genera is susceptible to increasing sea surface temperatures. Our findings provide insight into the unique biology of subtropical corals within this remote reef and the susceptibility of corals in the region to increasing sea surface temperatures. Full article
(This article belongs to the Special Issue Coral Microbiome and Microbial Ecology)
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