Flexibility and Specificity in Coral-Algal Symbiosis: Diversity, Ecology, and Biogeography of Symbiodinium

@article{Baker2003FlexibilityAS,
  title={Flexibility and Specificity in Coral-Algal Symbiosis: Diversity, Ecology, and Biogeography of Symbiodinium},
  author={Andrew C. Baker},
  journal={Annual Review of Ecology, Evolution, and Systematics},
  year={2003},
  volume={34},
  pages={661-689}
}
  • A. Baker
  • Published 28 November 2003
  • Environmental Science, Geography
  • Annual Review of Ecology, Evolution, and Systematics
▪ Abstract Reef corals (and other marine invertebrates and protists) are hosts to a group of exceptionally diverse dinoflagellate symbionts in the genus Symbiodinium. These symbionts are critical components of coral reef ecosystems whose loss during stress-related “bleaching” events can lead to mass mortality of coral hosts and associated collapse of reef ecosystems. Molecular studies have shown these partnerships to be more flexible than previously thought, with different hosts and symbionts… 

Figures from this paper

Biology of Symbiotic Dinoflagellates ( Symbiodinium ) in Corals

Mechanisms of both symbiotic initiation and breakdown in association with corals are highlighted, to predict the future of coral reef ecosystems in the changing ocean environments.

The extended phenotypes of marine symbioses: ecological and evolutionary consequences of intraspecific genetic diversity in coral–algal associations

It is hypothesize that unique combinations of coral and algal individuals yield functional diversity that affects not only the ecology and evolution of the coral holobiont, but associated communities as well.

Endosymbiotic flexibility associates with environmental sensitivity in scleractinian corals

Findings in this study challenge the paradigm that symbiotic flexibility enhances holobiont resilience and underscores the need for a deeper examination of the extent and duration of the functional benefits associated with endosymbiotic diversity and flexibility under environmental stress.

Coral Symbiodinium Community Composition Across the Belize Mesoamerican Barrier Reef System is Influenced by Host Species and Thermal Variability

Reef-building corals maintain a symbiotic relationship with dinoflagellate algae of the genus Symbiodinium, and this symbiosis is vital for the survival of the coral holobiont. Symbiodinium community

Genetic and environmental basis for Symbiodinium specificity in the coral-dinoflagellate symbiosis

The paradigm that Symbiodinium communities in brooding corals are exclusively vertically transmitted is overturned, and a new mixed-mode transmission strategy that is more in line with symbiosis models in other invertebrate groups is suggested.

Symbiodinium diversity and potential hybridisation on the highly biodiverse coral reefs of Timor-Leste

There was strong evidence of genetic incongruence at two Atauro Island sites, with all testing procedures identifying genetic discordance between organellar and nuclear genomes, consistent with theoretical predictions of hybridisation, and its corroboration by multiple loci is significant.

Interactions Between Corals and Their Symbiotic Algae

In this chapter, ecological and physiological aspects of the interactions between corals and their symbiotic algae are reviewed in light of recent advances in knowledge of the diversity of these symbionts and cost-benefit analysis is suggested.

Unique quantitative Symbiodiniaceae signature of coral colonies revealed through spatio-temporal survey in Moorea

Results reveal that a suit of permanent Symbiodiniaceae genera is maintained in each colony in a specific range of quantities, giving a unique ‘Symbiodini Families signature’ to the host, which may account for the intra-specific differences in resistance and resilience observed during environmental anomalies.

Bleaching Resistance and the Role of Algal Endosymbionts

Evidence for shuffling versus switching under thermal stress and how coral--algal symbioses are likely to respond to ocean warming associated with climate change are discussed.

Divergent symbiont communities determine the physiology and nutrition of a reef coral across a light-availability gradient

Results reveal Symbiodiniaceae functional diversity produces distinct holobionts with different capacities for autotrophic nutrition, and energy tradeoffs from associating with opportunist symbionts are not met with increased heterotrophy.
...

References

SHOWING 1-10 OF 122 REFERENCES

Intraspecific diversity and ecological zonation in coral-algal symbiosis.

  • R. RowanN. Knowlton
  • Environmental Science
    Proceedings of the National Academy of Sciences of the United States of America
  • 1995
Habitat specificity provides ecological explanations for the previously documented poor concordance between host and symbiont phylogenies and the otherwise surprising lack of direct, maternal transmission of symbionts in many species of hosts.

Landscape ecology of algal symbionts creates variation in episodes of coral bleaching

It is found that the ecologically dominant Caribbean corals Montastraea annularis and M. faveolata can act as hosts to dynamic, multi-species communities of Symbiodinium, implying that physiological acclimatization is not the only mechanism by which corals cope with environmental heterogeneity.

Reef Corals: Mutualistic Symbioses Adapted to Nutrient-Poor Environments

The present discussion considers the potential nutritional capabilities of corals as mutualistic symbioses and the extent to which specific organismic and ecological manifestations of these capabilities have been described and quantified.

REVIEW—DIVERSITY AND ECOLOGY OF ZOOXANTHELLAE ON CORAL REEFS

  • R. Rowan
  • Environmental Science, Biology
  • 1998
Animal-algal endosymbioses are a dominant feature of coral reefs and an enduring theme in coral reef biology, and recent studies of zooxanthella diversity have sought to establish evolutionary and ecological relationships, both among symbiont and between symbionts and their hosts.

Low symbiont diversity in southern Great Barrier Reef corals, relative to those of the Caribbean

The comparison of symbiont diversity between southern GBR and Caribbean reefs shows an inverse relationship between coral diversity and symbionT diversity, perhaps as a consequence of more-rapid diversification of Caribbean symbionts.

Diversity and community structure of symbiotic dinoflagellates from Caribbean coral reefs

A comparison of the symbiont types found in field-collected hosts with types previously cultured from these hosts indicates the existence of low density or "background"-symbiont populations and cryptic, potentially non-mutualistic types in some hosts.

The role of algal symbiosis in reefs through time

  • R. Cowen
  • Environmental Science, Geography
  • 1988
Any uniformitarian hypothesis of reef ecosystems should anticipate a major role for symbiosis in any ancient reef community, with significant implications for paleoenvironments and paleoecology.

Patterns of coral–dinoflagellate associations in Acropora: significance of local availability and physiology of Symbiodinium strains and host–symbiont selectivity

P phylogenetic relationships between Symbiodinium isolates from a wide range of Acropora species are determined and the algal genotypes are plotted onto a molecular phylogeny of 28 Acropore species, using the same samples for the host and symbiont genotyping.

Sex, Symbiosis and Coral Reef Communities

Conclusions of this survey of current knowledge are that complexities of cnidarian reproductive biology, and the authors' rudimentary knowledge of reproductive patterns in reef cNidarians, make forecasting based on current knowledge uncertain at best.

Coral reef bleaching: ecological perspectives

  • P. Glynn
  • Environmental Science
    Coral Reefs
  • 2004
An effort must be made to understand the impact of bleaching on the remainder of the reef community and the long-term effects on competition, predation, symbioses, bioerosion and substrate condition, all factors that can influence coral recruitment and reef recovery.
...