Amoebobacter

Cross Index	Amoebobacter
SuperSet	Prokaryote, Eubacteria Anoxygenic Phototrophic Bacteria
Compare	Purple Bacteria Internal sulfur granules Amoebobacter, Chromatium, Lamprobacter modestohalophilus, Lamprocystis roseopersicina, Thiocapsa, Thiocystis, Thiodicyton, Thiopedia rosea , Thiospirillum jenense, External sulfur granules Ectothiorhodospira no granules Rhodobacter, Rhodocyclus, Rhodomicrobium vannieli, Rhodopila globiformis, Rhodopseudomonas, Rhodospirillum, Green Bacteria Sulfur granules Anachloris perfilievii, Chlorobium, Chloroherpeton thalassium, Pelodictyon, Prosthecachloris no sulfur granules Heliobacillus mobilis, Heliobacterium chlorum Multicellular filamentous Chloroflexus aurantiacus, Chloronema, Heliothrix oregonensis, Oscillochloris Anaerobic chemotropic Erythrobacter longus,
Contrast	Oxygenic Phototrophic Bacteria Archaea
Subset

Morphology

Amoebobacter

CELLULAR

Staining	Gram-negative
Morphology	Cells spherical, multiplication by binary fission,. Individual cells are surrounded by slime; cells may stick together, forming irregular aggregates
Motility	non-motile
Specialized structures	Cells contain irregularly shaped gas vacuoles in the central part. During sulfide oxidation, globules of elemental sulfur are transiently stored in the gas vacuole-free peripheral part of the cells

Division

COLONIAL

Solid surface

Liquid

Growth Parameters

Amoebobacter

PHYSIOLOGICAL

Tropism	Phototrophic under anaerobic conditions; may be chemoautotrophic or mixotrophic under microaerobic to aerobic conditions in the dark. Capable of photolithoautotrophic growth with sulfide or sulfur as electron donor.
Oxygen
pH
Temperature
Requirements
Products	Final oxidation product is sulfate..
Enzymes
Unique features	Photosynthetic pigments bacterio-chlorophyll a and carotenoids are located in internal membrane systems of vesicular type.

ENVIRONMENTAL

Habitat	Habitat: mud and stagnant water of ponds and lakes containing hydrogen sulfide; may occur as dominant bloom-forming bacteria together with Thiocapsa roseopersicina in wastewater lagoons containing degradable organic substance
Lifestyle
Pathogenicity

Distribution

Genome

Amoebobacter

G+C Mol %

64.3-65.3 (Bd)

Reference	Amoebobacter
First citation	Winogradsky, S. 1888. Uber Eisenbakterien. Bot Z 42: 261-270 Winogradsky, S. 1888. Beitrage zur Morphologie und Physiologie der bacterien. Heft 1. Zur Morphologie unde Physiologie der Schwefelbakterien. Arthur Felix, Leipzig pp 1-120
The Prokaryotes
Bergey's Systematatic	p 1651 Norbert Pfennig
Bergey's Determinative	p 353
References