Difference between revisions of "Gramella forsetii"

From MicrobeWiki, the student-edited microbiology resource
Jump to: navigation, search
(Ecology)
(Ecology)
Line 24: Line 24:
  
 
==Ecology==
 
==Ecology==
This organism is found in seawater on organic matter particles. their abundance
+
This organism is found in seawater on organic matter particles. Their abundance and distribution pattern reveal their capability to live in diverse and nutrient-rich microenvironments. Their contributions to the environment are dedicated to the marine carbon cycle.
Describe any interactions with other organisms (included eukaryotes), contributions to the environment, effect on environment, etc.
 
  
 
==Pathology==
 
==Pathology==

Revision as of 00:00, 5 June 2007

A Microbial Biorealm page on the genus Gramella forsetii

Classification

Higher order taxa

Kingdom: Bacteria; Group: Bacteroidetes; Phylum: formerly Cytophaga-Flavobacteria-Bacteroides(CFB)

Species

Gramella Genus

Description and significance

This specie was first found and isolated from concentrated seawater collected in the German Bight of the North Sea during a phytoplankton bloom. They represent significant part of free-living microbial assemblages in nutrient-rich microenvironments. Organisms of this group are significant in that they specialize in degradation of high molecular weight compounds in both the dissolved and particulate fraction of the marine organic matter pool. Thus, they hold a major role of Bacteroidetes in the marine carbon cycle.

Genome structure

'Gramella forsetii' KT0803. Size: 3 Mb; Chromosome: 1

Analysis of the genomes reveal a substantial suite of genes that encode hydrolytic enzymes. They are a predicted preference for polymeric carbon sources and a distinct capability for surface adhesion.

Cell structure and metabolism

This marine Bacteroidetes has a gram negative like outer structure as well as a rod shape appearance. Because they are found on macroscopic organic matter particles (marine snow), their metabolism pertains to a non-halophilic, aerobic, and mesophilic environment. Specialized genes encoding for hydrolytic enzymes reveals adaptations to degradation of polymeric organic matter.

Ecology

This organism is found in seawater on organic matter particles. Their abundance and distribution pattern reveal their capability to live in diverse and nutrient-rich microenvironments. Their contributions to the environment are dedicated to the marine carbon cycle.

Pathology

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

Application to Biotechnology

Their ability to degrade high molecular weight compounds in both the dissolved and particulate fraction of the marine organic matter pool proves Bacteroidetes' significant contribution in the marine carbon cycle.


Does this organism produce any useful compounds or enzymes? What are they and how are they used?

Current Research

Members of the Bacteroidetes, formerly known as the Cytophaga-Flavobacteria-Bacteroides (CFB) phylum, are among the major taxa of marine heterotrophic bacterioplankton frequently found on macroscopic organic matter particles (marine snow). In addition, they have been shown to also represent a significant part of free-living microbial assemblages in nutrient-rich microenvironments. Their abundance and distribution pattern in combination with enzymatic activity studies has led to the notion that organisms of this group are specialists for degradation of high molecular weight compounds in both the dissolved and particulate fraction of the marine organic matter pool, implying a major role of Bacteroidetes in the marine carbon cycle. Despite their ecological importance, comprehensive molecular data on organisms of this group have been scarce so far. Here we report on the first whole genome analysis of a marine Bacteroidetes representative, 'Gramella forsetii' KT0803. Functional analysis of the predicted proteome disclosed several traits which in joint consideration suggest a clear adaptation of this marine Bacteroidetes representative to the degradation of high molecular weight organic matter, such as a substantial suite of genes encoding hydrolytic enzymes, a predicted preference for polymeric carbon sources and a distinct capability for surface adhesion.

Enter summaries of the most recent research here--at least three required

References

Bauer, M. Kube, M., Teeling, H., Richter, M., Lombardot, T., Allers, E., Wurdemann, C.A., Quast, C., Kuhl, H., Knaust, F., Woebken, D., Bischof, K., Mussmann, M., Choudhuri, J.V., Meyer, F., Reinhardt, R., Amann, R.I., and Glockner, F.O. "Whole genome analysis of the marine Bacteroidetes 'Gramella forsetii' reveals adaptations to degradation of polymeric organic matter." Environ. Microbiol. (2006) 8:2201-2213. Published online 4 October 2006.


[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 student of Rachel Larsen and Kit Pogliano