| Cross Index | Arachnia propionica |
| SuperSet | Prokaryote, Eubacteria, Irregular, Nonsporing Gram-Positive Rods |
| Compare | Acetobacterium Acetogenium
kivui,
Actinomyces Aeromicrobium
erythreum
Agromyces
ramosus
Arachnia
propionica,
Arcanobacterium
haemolyticum,
Arthrobacter, Aureobacterium, Bifidobacterium, Brachybacterium
faecium,
Brevibacterium, Butyrivibrio, Caseobacter
polymorphus,
Cellulomonas ,Clavibacter, Coriobacterium
glomerans,
Corynebacterium, Curtobacterium, Dermobacter
hominus,
Eubacterium, Exigouibacterium
aurantiacum,
Falcivibrio, Gardnerella, Jonsia
denitrificans,
Lachnospira
multiparus,
Microbacterium, Mobiluncus, Pimelobacter, Proprionibacterium, Rarobacter
faecitabidus
, Rothia
dentocariosa,
Rubrobacter
radiotolerans,
Sphaerobacter
thermophilus
, Terrabacter
tumescens,
Thermoanaerobacter
ethanolicus,
Thermoanaerobium
brockii Charfreitag et al (1988 IJSB 38: 354-357) suggested that Arachnia propionica be transferred to Proprionibacterium |
| Contrast | Archaea |
| Subset |
| Morphology | Arachnia propionica |
| CELLULAR |
| Staining | Gram positive ,non acid fast |
| Morphology | forms short diptheroid rods and branching filaments 5-20 microns or longer.Swollen spherical cells up to 5 microns in diameter are frequently seen. |
| Motility | non motile |
| Specialized structures | Neither endospores nor capsules are formed |
| Division |
| COLONIAL |
| Solid surface | Microcolonies are usually highly filamentous but there are no aerial filaments. |
| Liquid |
| Growth Parameters | Arachnia propionica |
| PHYSIOLOGICAL |
| Tropism | chemoorganotrophs |
| Oxygen | facultative anaerobes grow best under anaerobic conditions : fermentative metabolism. |
| pH | |
| Temperature | |
| Requirements | |
| Products | Anaerobic fermentattion of glucose yields carbon dioxide, acetic acid, priopionic acid. Aerobically, glucose is feremented to acetic acid and carbon dioxide indole not produced |
| Enzymes | lack catalase |
| Unique features | Cell walls contain diaminopimelic acid and lactose but no lysine, ornithine or arabinose. |
| ENVIRONMENTAL |
| Habitat | |
| Lifestyle | |
| Pathogenicity |
| Distribution |
| Genome | Arachnia propionica |
| G+C Mol % |
| Reference | Arachnia propionica |
| First citation | Pine, L. and L.K. Georg .1969. Reclassification of Actinomyces propionicus IJSB 19:267-272 |
| The Prokaryotes | p |
| Bergey's Systematatic | p 1332 K.P. Schaal |
| Bergey's Determinative | p 572 |
| References |