The G+C contents of the DNAs of 41 strains belonging to the genus Redhead et Malloch were determined by the thermal denaturation method. Melting profiles revealed that the DNAs of these strains are heterogeneous. Four groups were recognized on the basis of this heterogeneity. However, DNA similarity values, which were calculated by using DNA-DNA reassociation kinetics, revealed that the strains could be divided into six subgroups. Strains belonging to the same subgroup exhibited high levels of DNA similarity (84 to 100%). The members of two subgroups, corresponding to and , exhibited low levels of DNA similarity with the members of the other subgroups (20 to 27%). The members of the four remaining subgroups, which contained only strains previously identified as , exhibited intermediate levels of reassociation (41 to 59%). Some combinations of phenotypic characteristics correlated with the subgroups: a key based on phenotypic characteristics that can be used to distinguish the subgroups is presented.


Article metrics loading...

Loading full text...

Full text loading...


Most cited this month Most Cited RSS feed

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