Nonlabens ulvanivorans
A Microbial Biorealm page on the genus Nonlabens ulvanivorans
Classification
Higher order taxa
Domain: Bacteria;
Phylum: Bacteriodetes;
Class: Flavobacteria;
Order: Flavobacteriales;
Family: Flavobacteriaceae
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NCBI: [1] |
Species
Nonlabens ulvanivorans
Description and significance
Nonlabens ulvanivorans stains gram-negative and is a peach-colored, rod-shaped, non-gliding, strictly aerobic, chemo-organotroph originally isolated from the feces of the mollusk Aplasia punctate at Presqu'île de Pen Lan, Pleubian, Brittany, France in 2011 [1]. N.ulvanivorans is considered novel for its ability to degrade and metabolize ulvan, an essential polysaccharide component of the cell-wall matrix of green seaweeds of the phylum Chlorophyta and order Ulvales [1]. The structure and biological functions of Ulvan are currently the subjects for research the polysaccharide's potential in products of therapeutic, nutraceutical, and personal care value [1]. Thus, understanding the mechanisms by which N. ulvanivorans breaks down and ultimately metabolizes Ulvan is of economic value for the exploitation of the complex polysaccharide.
Nonlabens ulvanivorans was originally classified as Persicivirga ulvanivorans, this classification that was challenged and corrected in 2012 by a cross-analysis of the 16S rRNA of four genuses: Nonlabens, Persicivirga, Stenothermobacter, and Sandarakinotalea. It was concluded that the Nonlabens genus was most descriptive of the species in question [3].
Genome structure
The genome has a length of 3,220,243 base pairs. There are 2,954 coding sequences, 1,752 code for annotated functions while the remaining 1,202 are for hypothetical proteins. There are also 21 tRNA genes and 1 rRNA operon, which is consistent with the estimated number of rRNA functions for the Flavobacteriacease family. The significance of the first draft genome sequence for N. ulvanivorans is to understand which enzymes enable the bacteria to degrade Ulvan and how the polysaccharide is metabolized. [2]
Cell and colony structure
Interesting features of cell structure. Interesting features of colony structure.
Metabolism
Energy source(s); external electron donor(s) (=reductant source(s)); carbon source(s); oxygen classification; important molecules it produces.
Ecology
Habitat; symbiosis; contributions to the environment. metagenomic data link
Pathology
Does this organism cause disease? Human, animal, plant hosts? Virulence factors.
References
[Sample reference] [http://ijs.sgmjournals.org/content/62/2/330; Sylvie Cousin, Marie-Laure Gulat-Okalla, Laurence Motreff, Catherine Gouyette, Christiane Bouchier, Dominique Clermont, and Chantal Bizet. Lactobacillus gigeriorum sp. nov., isolated from chicken crop. Int J Syst Evol Microbiol February 2012 62:330-334; published ahead of print March 18, 2011.} [doi:10.1099/ijs.0.028217-0.]
Edited by PUT YOUR NAME HERE of Dr. Lisa R. Moore, University of Southern Maine, Department of Biological Sciences, http://www.usm.maine.edu/bio
