Cross Index	Selenomonas
SuperSet	Prokaryote, Eubacteria Gram-Negative, Anaerobic, Straight, Curved, and Helical Bacteria
Compare	Acetivibrio Acetoanaerobium noterate , Acetofilamentum rigidum, Acetogenium kivui, Acetomicrobium, Acetothermus paucivorans,, Acidaminobacter hydrogenoformans, Anaerbioospirillum succiniciproducens, , Anaerorhabdus furcosus ,Anaerovibrio, Bacteroides, Butyrivibrio, Centipeda periodontii, Fervidobacterium, Fibrobacter, Fusobacterium Haloanaerobium praevalens, Halobacteroides halobius, Ilyobacter, Lachnospira multparus Leptotrichia buccalis, Malaonomonas rubra, Megamonas hypermega, Mitsuokella, Oxalobacter formigenes, Pectinatus, Pelobacter Porphyromonas, Provotella, Propionigenium modestum, Propionispira arboria, Rikenella microfusus, Roseburia ceciola, Ruminobacter amylophilus, Sebaldella termitidis, Selenomonas, Sporomusa, Succinimonas amylolytica, Succinivibrio dextrinosolvens, Syntrophobacter wolinii, Syntrophomonas, Thermobacteroides, Thermosipho africanus, Thermotoga, Tissierella praeacuta, Wolinella, Zymophilus
Contrast	Archaea
Subset

 

Morphology

Selenomonas

CELLULAR

Staining	Gram-negative..
Morphology	Curved to helical rods, usually 0.9-1.1 by 3.0-6.0 um. The ends are usually tapered and rounded to give short kidney- to crescent-shaped or vibroid cells. Long cells and chains of cells are often helical.
Motility	Motile with active tumbling; flagella (up to 16) are arranged linearly as a tuft near the center of the concave side in the area of cell fission
Specialized structures	Capsules are not formed. Resting stages are not known.

Division

COLONIAL

Solid surface

Liquid

 

Growth Parameters

Selenomonas

PHYSIOLOGICAL

Tropism	Chemoorganotrophic, having a fermentative type of metabolism.
Oxygen	Strictly anaerobic.
pH
Temperature	Optimum temperature, 35-40`C; maximum 45`C; minimum, 20-30`C.
Requirements
Products	Carbohydrates and sometimes amino acids and lactate can serve as fermentable substrates. Fermentation of glucose yields chiefly acetic acid, propionic acid, CO2 and/or lactate. Small amounts of H2 and succinate may be produced
Enzymes	Catalase-negative
Unique features

ENVIRONMENTAL

Habitat	found mainly in the huamn buccal cavity, the rumen of b\herbivores and the cecum of pigs and several rodents. Selenomonas acidaminopila has been isolated from a commercial anaerobic digestor and Selenomonas lacticifex from brewery yeast
Lifestyle
Pathogenicity

Distribution

 

Genome

Selenomonas

G+C Mol %

54-61 (Bd)

 

Reference

Selenomonas

First citation	Von Prowazek, S. 1913. Zur Paraitologie von Westafrika. Zentralbl. Bakteriol. Parasitenkd. Infektionskr. Hyg. Abt. I. Orig. 70: 32-36
The Prokaryotes	p
Bergey's Systematatic	p 650
Bergey's Determinative	p 301

References