Thiocystis

Cross Index	Thiocystis
SuperSet	Prokaryote, Eubacteria Anoxygenic Phototrophic Bacteria
Compare	Purple Bacteria Internal sulfur granulesAmoebobacter, 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

Thiocystis

CELLULAR

Staining	Gram- negative.
Morphology	Cells spherical to slightly ovoid; before cell division, diplococcus-shaped.; Cells occur singly or in pairs or may grow in irregular aggregates surrounded by slime.
Motility	motile by means of a single flagellum.
Specialized structures	Contain internal photosynthetic membrane systems of vesicular type in which the photosynthetic pigments bacteriochlorophyll a and carotenoids of groups 3 or 4 are located. Do not contain gas vacuoles. during sulfide oxidation, globules of elemental sulfur are transiently stored inside the cells. Storage materials: polysaccharide, poly-B-hydroxybutyrate, polyphosphate

Division

COLONIAL

Solid surface

Liquid

Growth Parameters

Thiocystis

PHYSIOLOGICAL

Tropism	Under anaerobic conditions, cells are capable of photolithautotrophic growth with sulfide or sulfur as electron donor; Facultatively chemoautotrophic under microaerobic to aerobic conditions.
Oxygen
pH
Temperature
Requirements
Products	The final oxidation product is sulfate.
Enzymes
Unique features

ENVIRONMENTAL

Habitat	anoxic sulfide-containing water and mud of fresh and brackish water and marine environments.
Lifestyle
Pathogenicity

Distribution

Genome

Thiocystis

G+C Mol %

61.3-67.9 (Bd)

Reference	Thiocystis
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 1643 Norbert Pfennig
Bergey's Determinative	p 355
References