SUMMARY: Two hundred and thirty-three strains of coryneform bacteria, including representatives of the genera and and other related bacteria, were studied using 173 morphological, physiological and biochemical tests. The bacteria were grown on a soil extract medium which allowed growth of all the strains, and all were incubated at 30 °C. The results were subjected to computer analysis. The majority of the strains grouped into eight main clusters representing: (A) and (B) and (C) animal corynebacteria and (D) and related bacteria; (E) (F) and (G) plant pathogenic corynebacteria; (H) Based on these clusters, several recommendations are made regarding the classification of the coryneform area. (i) The members of clusters A and B at present placed in the Corynebacteriaceae would seem better moved to the Lactobacillaceae. (ii) The genus would best be retained for the type species closely related animal corynebacteria and (iii) and are distinct taxa more closely related to than to either or (iv) Clusters F and G are evidently heterogeneous. In particular the positions of and the plant pathogenic corynebacteria are unclear. is a large loose taxon and it is premature to decide on its taxonomic rank. The genus should be retained for and closely related strains. (v) The cellulolytic forms of Nocardia should be removed from the genus; they are however quite distinct from


Article metrics loading...

Loading full text...

Full text loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error