Shewanella amazonensis
A Microbial Biorealm page on the genus Shewanella amazonensis
Classification
Higher order taxa
Bacteria (Domain); Proteobacteria (Phylum); Gammaproteobacteria (Class); Alteromonadales (Order); Shewanellaceae (Family); Shewanella (Genus)
Species
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NCBI: Taxonomy |
Shewanella amazonensis
Description and significance
Shewanella amazonensis (strain ATC BAA-1098/SB2B) is a Gram-negative, facultatively anaerobic, motile, polarly flagellated, rod-shaped eubacterium. It is exceptionally active in the anaerobic reduction of iron, manganese and sulfur compounds. It was isolated from shelf coastal muds, in intertidal sediments in the Amazon River delta, off the Amapa coast of Brazil.
Genome structure
Analysis of the 16S rDNA sequence revealed a clear affiliation between strain SB2BT and members of the gamma subclass of the class Proteobacteria. High similarity values were found with certain members of the genus Shewanella, especially with Shewanella putrefaciens, and this was supported by cellular fatty acid profiles and phenotypic characterization. DNA–DNA hybridization between strain SB2BT and its phylogenetically closest relatives revealed low similarity values (24<6–42<7%) which indicated species status for strain SB2BT. That SB2BT represents a distinct bacterial species within the genus Shewanella is also supported by gyrB sequence analysis. Considering the source of the isolate, the name Shewanella amazonensis sp. nov. is proposed and strain SB2BT (ATCC 700329T) is designated as the type strain.
Cell structure and metabolism
Interesting features of cell structure; how it gains energy; what important molecules it produces.
Ecology
Habitat; symbiosis; contributions to environment.
Pathology
How does this organism cause disease? Human, animal, plant hosts? Virulence factors, as well as patient symptoms.
