Pseudoalteromonas haloplanktis

From MicrobeWiki, the student-edited microbiology resource

A Microbial Biorealm page on the genus Pseudoalteromonas haloplanktis

Classification

Higher order taxa

Bacteria; Proteobacteria; Gammaproteobacteria; Alteromonadales; Pseudoalteromonadaceae; Pseudoalteromonas

Species

P. agarivorans, P. aliena, P. antarctica, P. arctica, P. atlantica, P. aurantia, P. byunsanensis, P. carrageenovora, P. chazhmella, P. citrea, P. denitrificans, P. distincta, P. elyakovii, P. espejiana, P. flavipulchra, P. ganghwensis, P. gracilis, P. haloplanktis, P. issachenkonii, P. luteoviolacea, P. maricaloris, P. marina, P. mariniglutinosa, P. nigrifaciens, P. paragorgicola, P. peptidolyticam P. phenolica, P. piscicida, P. porphyrae, P. prydzensis, P. rubra, P. ruthenica, P. sagamiensis, P. spiralis, P. spongiae, P. telluritireducens, P. tetraodonis, P. translucida, P. tunicate, P. ulvae, P. undina, P. viridis, P. whanghaensis, P. sp.

NCBI: Taxonomy Genome: -P. haloplanktis TAC 125 chromosome 1 -P. haloplanktis TAC 125 chromosome II

Description and significance

Pseudoaltermonas haloplanktis is a curve, rod shaped (0.2 to 1.5 by 1.8 to 3 µm), Antarctica psychrophile bacterium that is composed mainly in ~40% DNA G + C content (Gauthier et al). It was initially called Alteromonas tetraodonis, but has been reclassified as Alteromonas haloplanktis then to Pseudoalteromonas haloplanktis from the Phylogenetic assays that was done by Gauthier et al Gauthier et al. In addition, Pseudoaltermonas haloplanktis is a Gram negative bacterium that is non-spore-forming, not luminescent, and is motile by polar flagella. This organism was isolated from the Antartica sea water and is found to grow only in marine environment at ~20ºC. Researchers have sequenced some of its genome such as DNA Ligase and cellulase to give an understanding of how its enzymatic proteins allow it to adapt at such low temperature.

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

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Ecology

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

Pathology

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

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.

Edited by Kim Ngo, student of Rachel Larsen