Vibrio harveyi: Difference between revisions

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# Miller, S.D., S.H.D. Haddock, C.D. Elvidge, T.F. Lee. (2005) Detection of a bioluminescent milky sea from space. Proc. Nat. Acad. Sci. 102:14181-14184
* Miller, S.D., S.H.D. Haddock, C.D. Elvidge, T.F. Lee. (2005) Detection of a bioluminescent milky sea from space. Proc. Nat. Acad. Sci. 102:14181-14184
Johnson and Shunk 1936
Johnson and Shunk 1936




Edited by Ryan Kendall of [mailto:ralarsen@ucsd.edu Rachel Larsen] and Kit Pogliano's Bacteriology class Spring 2007
Edited by Ryan Kendall of [mailto:ralarsen@ucsd.edu Rachel Larsen] and Kit Pogliano's Bacteriology class Spring 2007

Revision as of 03:27, 2 May 2007

A Microbial Biorealm page on the genus Vibrio harveyi

Classification

Higher Order Taxa

Kingdom: Bacteria
Phylum: Proteobacteria
Class: Gammaproteobacteria
Order: Vibrionales
Family: Vibrionaceae

Species

Vibrio harveyi

Synonyms: Lucibacterium harveyi, Beneckea harveyi, Achromobacter harveyi, Pseudomonas harveyi, Photobacterium harveyi, (Johnson and Shunk, 1936); Vibrio carchariae (Grimes, 1985); Vibrio trachuri, (Iwamoto, 1996)

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.

Appearance: V. harveyi is curved rod shaped, Gram-negative, non-sporulating, and monotrichous (mobilized by a single polar flagellum). It also has the characteristic of bioluminesence.

Habitat: V. harveyi is found mainly in tropical marine environments including brackish water. V. harveyi is also found in symbiotic relationships with many marine organisms such as.....

Discovery: Johnson and Shunk 1936

Significance: Inter- and intra-bacterial communication, quorum sensing (Bassler). Sequencing of the genome would undoubtedly contribute to further understanding of this unique skill.

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?

The Microbial Sequencing Center of the Institute for Genomic Research is currently doing shotgun seguence research for the HY01 strain of Vibrio harveyi. This research is in conjunction with a project to identify the genome sequence for 17 different Vibrio species enabling extensive comprehension of the Vibrio genus.

Cell structure and metabolism

Describe any interesting features and/or cell structures; how it gains energy; what important molecules it produces.

Structure: Because V. harveyi is Gram-negative it has a cell wall that consists of two membranes: an outer membrane full of lipopolysaccharides and an inner cytoplasmic membrane. In between these is a periplasmic space housing a peptidoglycan layer.

Metabolism: Vibrio harveyi is a heterotrophic, facultative anaerobic bacterium meaning it can swap between aerobic respiration and fermentation. This characteristic helps V. harveyi survive in low oxygen concentrations when enough fermentable material is present.

Bioluminecence is controlled by the lux operon in V. harveyi and is observed when the enzyme luciferace oxidizes an organic compound releasing free energy in the form of light!

Ecology

Describe any interactions with other organisms (included eukaryotes), contributions to the environment, effect on environment, etc.

Milky Sea:

Pathology

How does this organism cause disease? Human, animal, plant hosts? Virulence factors, as well as patient symptoms.

Going out with a glow. (as opposed to a bang)

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

[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.


  • Miller, S.D., S.H.D. Haddock, C.D. Elvidge, T.F. Lee. (2005) Detection of a bioluminescent milky sea from space. Proc. Nat. Acad. Sci. 102:14181-14184

Johnson and Shunk 1936


Edited by Ryan Kendall of Rachel Larsen and Kit Pogliano's Bacteriology class Spring 2007