Heliothrix oregonensis

Cross Index	Heliothrix oregonensis
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

Heliothrix oregonensis

CELLULAR

Staining	Gram-negative.
Morphology	Clearly septate filaments of indefinite length, unbranched and undifferentiated. Cells about 1.5 um in diameter, much longer than broad
Motility	Gliding motility, no flagella.
Specialized structures	Thin sheath present or not. Cell division by fission, in one plane only. Cells granular, poly-B-hydro-xybutyric acid inclusions present; gas vacuoles unknown. Bacteriocholorophyll a present, but no accessory bacteriocholorophylls or chlorosomes. Filaments orange; Internal membranous structures unknown.

Division

COLONIAL

Solid surface

Liquid

Growth Parameters

Heliothrix oregonensis

PHYSIOLOGICAL

Tropism	probably mainly photoheterotrophic metabolism, light-dependent uptake of acetate
Oxygen	Aerotolerant; anaerobic growth uncertain
pH
Temperature	about 35-56`C; optimum temperature: 40-55`C (for acetate uptake).
Requirements
Products	carotenoids abundant.
Enzymes
Unique features

ENVIRONMENTAL

Habitat
Lifestyle
Pathogenicity

Distribution

Genome

Heliothrix oregonensis

G+C Mol %

Reference	Heliothrix oregonensis
First citation	Pierson,B.K., S.J. Giovannoni, D.A. Stahl and R.W. Castenholz. 1986. In Validation of the publication of new names and new combinations previously effectively published outside the IJSB List No. 20 IJSB 36:354-356 Effective publication Pierson,B.K., S.J. Giovannoni, D.A. Stahl and R.W. Castenholz.1985.Heliothrix oregonensis, gen. nov., sp. nov., a phototrophic filamentous bacterium containing bacteriochlorophyll a. Arch Microbiol. 142:164-167
The Prokaryotes
Bergey's Systematatic	p 1702 R. W. Castenholz and B. K.Pierson
Bergey's Determinative	p 363
References