Deoxyribonucleic acid base composition of pediococci and aerococci

✍ Scribed by Boháček, J. ;Blažíček, G. ;Kocur, M. ;Solberg, O. ;Clausen, O. G.

• Publisher: Springer-Verlag
• Year: 1969
• Weight: 232 KB
• Volume: 67
• Category: Article
• ISSN: 0003-9276
• DOI: 10.1007/bf00413681

✦ Synopsis

The guanine + cytosine content (GC) of DNAs of 9 strains of pediococci and 6 strains of aerococci was determined using different physicochemical methods. It was found that the GC content of DNA of the pediococci ranged from 37.8 to 41.2~ while that of the aerococci varied from 42.0 to 43.20/0 . The results obtained show that genetically related species are involved whose mutual position in the system is determined by only slight differences in the phenotype.

The taxonomy of Gram positive, catalase negative homofermentative acid-producing cocci is still a matter of controversy because there are some authors who classify these cocci in two genera, e.g. Pediococcus and Aerococcus, while others prefer to recommend their inclusion in the genus Pediococcus only. JE~s~,x and S~EL~Y (1954) were the first to describe