Microalgal symbionts: The coral-dinoflagellate relationship

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Introduction

Image of Pillar Coral, Dendrogyra cylindricus



Many microbes form symbiotic relationships with plants and animals. These relationships are complex and often persist throughout evolutionary time as organisms evolve in tandem. Some organisms are facultative symbionts, meaning that both partners can live independently while others are obligative, meaning that one cannot survive without the other. In obligative symbionts it is common that one organism provides necessary nutrients that the other organism is incapable of manufacturing. A unique obligative symbiotic relationship occurs between corals and their microalgal symbionts.

Corals are in the class Anthozoa and phylum Cnidaria. Species that live in the warm, clear waters near the equator are most well known, but species have also been found to live in deeper colder waters which are nearer to the poles.1 The clear waters near the equator are nutrient poor and coral do not have the resources to produce their own energy. The microbes in symbiotic relationships with the coral are endosymbiotic dinoflagellates. These dinoflagellates are single-celled algae in the family Symbiodiniaceae, and the most common dinoflagellates in tropical coral are of the genus Symbiodinium.

Section 1


Include some current research in each topic, with at least one figure showing data.

Section 2


Include some current research in each topic, with at least one figure showing data.

Section 3


Include some current research in each topic, with at least one figure showing data.

Conclusion


Overall paper length should be 3,000 words, with at least 3 figures.

References

[Sample reference] Takai, K., Sugai, A., Itoh, T., and Horikoshi, K. "Palaeococcus ferrophilus gen. nov., sp. nov., a barophilic, hyperthermophilic archaeon from a deep-sea hydrothermal vent chimney". International Journal of Systematic and Evolutionary Microbiology. 2000. Volume 50. p. 489-500.

Edited by (your name here), a student of Nora Sullivan in BIOL187S (Microbial Life) in The Keck Science Department of the Claremont Colleges Spring 2013.