Cross Index	Roseobacter
SuperSet	Prokaryote, Eubacteria, Gram-Negative Aerobic/ Microaerophilic Rods and Cocci
Compare	Acetobacter, Acidiphilium, Acidomonas methanolica, Acidothermus cellulolyticus, Acidovorax, Acinetobacter, Afipia, Agrobacterium, Agromonas oligotrophica, Alcaligenes, Alteromonas, Aminobacter, Aquaspirillum, Azomonas, Azorhizobium caulinodans, Azotobacter, Bacteroides, Beijerinckia, Bordetella, Bradyrhizobium japonicum, Brucella, Chromohalobacter marismortui, Chryseomonas luteola, Comamonas, Cupriavidus necator, Deleya, Derxia gummosa, Ensifer adherans, Erythrobacter longus, Flavimonas oryzihabitans, Flavobacterium, Francisella, Frateuria aurantica, Gluconobacter, Halomonas, Hydrogenophaga, Janthinobacterium lividum, Kingella, Lampropedia hyalina, Legionella, Marinobacter hydrocarbonoclasticus, Marinomonas, Mesophilobacter marinus, Methylobacillus glycogenes, Methylobacterium, Methylococcus, Methylomonas, Methylophaga, Methylophilus, Methylovorus glucosotrophus, Moraxella, Morococcus cerebrosus, Neisseriaceae, Neisseria, Oceanospirillum, Ochrobactrum anthropi, Oligella, Paracoccus, Phenylobacterium immobile, Phyllobacterium, Pseudomonas, Psychrobacter immobilis, Rhizobacter daucus, Rhizobium, Rhizomonas suberifaciens, Rochalimaea, Roseobacter, Rugomonas rubra, Serpens, Sinorhizobium, Sphingobacterium, Taylorella equigenitalis, Thermoleophilum, Thermomicrobium, Thermus, Variovorax paradoxus, Volcaniella eurhalina, Weeksella, Wolinella, Xanthobacter, Xanthomonas, Xyella fastidiosa, Xylophilus ampelinus, Zoogloea ramigera
Contrast	Archaea
Subset	Roseobacter litoralis and Roseobacter denitrificans

 

Morphology

Roseobacter

CELLULAR

Staining	Gram negative
Morphology	ovoid or rods (0.6-0.9 x 1.0-2.0 um)
Motility	motile by means of subpolar flagella
Specialized structures

Division

binary fission

COLONIAL

Solid surface

Liquid

 

Growth Parameters

Roseobacter

PHYSIOLOGICAL

Tropism	chemoorganotrop and photoheterotroph
Oxygen	aerobe
pH	optimum pH 7.0-8.0
Temperature	optimum 20- 30 oC
Requirements	Na+ ions, biotin, thiamine and nicotinic acid are required for growth. Some organic acids can be used as the sole carbon source. Methanol is not used
Products	major carotenoid is spheroidenone. The major quionone is ubiquinone-10. Menaquinone is not present. The main cellular fatty acid is C18:1.
Enzymes	gelatinase positive, lipase (Tween 80) positive, catalase positive oxidase positive
Distinct features	aerobic phototrophic activity occurs. Bacteriochlorophyll a is present aerobically but is not synthesized under anaerobic conditions. Cell suspension spectra show a large absorption band at 805-807 nm and a smaller band at 868-873 nm susceptible to chloramphenicol, penicillin, tetracycline, streptomycin and polymyxin B

ENVIRONMENTAL

Habitat
Lifestyle
Pathogenicity

Distribution

 

Genome

Roseobacter

G+C Mol %

50-60

 

Reference

Roseobacter

First Citation	Shiba 1991 Syst. Appl. Microbiol 14: 140-145 Shiba 1991 IJSB 41: 331
The Prokaryotes	p
Bergey's Determinative	p 96

References