Idiomarina loihiensis: Difference between revisions
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Revision as of 02:50, 29 August 2007
A Microbial Biorealm page on the genus Idiomarina loihiensis
Classification
Higher order taxa
Bacteria; Proteobacteria; Gammaproteobacteria; Alteromonadales; Idiomarinaceae; Idiomarina
Species
NCBI: [1] |
Idiomarina loihiensis
Description and significance
Describe the appearance, habitat, etc. of the organism, and why it is important enough to have its genome sequenced. Describe how and where it was isolated. Include a picture or two (with sources) if you can find them.
Idiomarina loihiensis is a rod shaped, Gram-negative aerobic cell driven through a single polar or subpolar flagellum. It was first throughly studied during a survey of bacterial diversity along deep sea hydrothermal vents located 35 kilometers off the coast of Hawaii. The volcanically active Lo'ihi Seamount is the home of Idiomarina loihiensis and several other metabolically active bacteria (2). The harsh conditions of the Lo'ihi Seamount, including high pressure and temperature (vents at 163º C), led to the early belief that these areas would be dominated by Archaea. However, further studies have indicated that it is Bacteria, instead that have dominated these vent microbial populations (2). Idiomarina loihiensis was one of the first bacterias cultivated and studied from these vents.
The bacteria was first collected in several dives during 1999 into Pele's Pit in the Lo'ihi Seamount. They were cultivated in marine agar or broth to be isolated and incubated at 30º C. The cells were determined to typically be 0.35µm wide and 0.7-1.8µm in length with optimum growth temperatures between 4-46º C. Comparison of the 16S rRNA genes with other bacteria revealed its similarity to I. abyssalis. However, the cultivated Idiomarina loihiensis were not similar to any other bacteria along the hydrothermal vents of the Lo'ihi Seamount. The strain cultivated, L2-TR, demonstrated the highest optimum growth salinity (7.5-10.0%) and growth temperatures relative to other species within its genus (2).
Genome structure
Describe the size and content of the genome. How many chromosomes? Circular or linear? Other interesting features? What is known about its sequence? Does it have any plasmids? Are they important to the organism's lifestyle?
Cell structure and metabolism
Describe any interesting features and/or cell structures; how it gains energy; what important molecules it produces.
Ecology
Describe any interactions with other organisms (included eukaryotes), contributions to the environment, effect on environment, etc.
Application to Biotechnology
Does this organism produce any useful compounds or enzymes? What are they and how are they used?
Current Research
Enter summaries of the most recent research here--at least three required
References
Edited by student of Rachel Larsen