TABLE I. THE GENERA TO BE DISTINGUISHED IN THE VARIOUS 



Cephalotrichous (and related immotile) 

 rod-shaped bacteria 



Fam. Pseudomonadaceae 





O C 



Photo-autotrophic : 



a. Bacteria with green pigment complex 

 (Chlorobacteria) 



b. Bacteria with purple pigment complex 

 (Thiorhodaceae) 



Photo-heterotrophic : 



a. Bacteria with brown pigment complex 

 (Phaeobacteria) 



b. Bacteria with purple pigment complex 



( Athiorhodaceae ) 



Chemo-autotrophic : 



a. Bacteria which oxidize inorganic sulfur 

 compounds (Leucothiobacteria) 



b. Bacteria which oxidize ferrous iron (and 

 manganese) 



c. Bacteria which oxidize ammonia . 



d. Bacteria which oxidize nitrites 



Chemo-heterotrophic : 



I. Bacteria with obligatory oxidative 

 katabolism 



II. Fermentative: 



a. 'Mixed acid' fermentation . 



b. Symmetric dimethylglycol (2,3-butylene- 

 glycol) fermentation . . . 



c. Alcoholic fermentation . 



d. Butyric acid (butylalcohol and acetone) 

 fermentation 



e. Protein fermentation 



f. Propionic acid fermentation 



g. Homofermentative lactic acid 

 fermentation 



h. Heterofermentative lactic acid 



fermentation 



i. Sulfate reduction .... 



k. Methane fermentation (CCX-reduction) 



Thiospirillum 



Phaeospirillum 

 Rhodospirillum 



Sulfospirillum 



Spirillum 



Chromatium Thiothece 



Phaeomonas 

 Rhodovibrio Rhodomonas 



Sidfomonas 



Didymohelix Sideromonas 

 ? 



Nilrosomonas 

 Nitrobacter 



Vibrio 



Acetobacter 

 Pseudomonas 

 Rhizobium 

 Azotobacter 

 Listerella ? 



Aeromonas? 

 Zymomonas 



Desulfovibrio 



Methano- 

 bacterium: 



