DNA-DNA homology studies among strains ofArthrobacterandBrevibacterium

✍ Scribed by E. Stackebrandt; F. Fiedler

• Book ID: 104769425
• Publisher: Springer
• Year: 1979
• Tongue: English
• Weight: 602 KB
• Volume: 120
• Category: Article
• ISSN: 0302-8933
• DOI: 10.1007/bf00423078

✦ Synopsis

Sixteen named strains of Arthrobacter and two strains of Brevibaeterium were investigated by nucleic acid hybridisation. The Arthrobacter strains show homology values ranging between 11 and 55 % to the type strain A. globiformis DSM 20124 (ATCC 8010), indicating only a low to moderate relationship. Two strains of A. globiformis, DSM 20124 and DSM 20125, exhibit only poor relationship to one another (30%). Among all the Arthrobacter strains the homology data range between 10 to 70 ~o demonstrating separate status of almost all species. Only A. polychromogenes DSM 20136 was found to be a subspecies of A. oxydans DSM 20119. The type strain of A. citreus, DSM 20133 shows a remarkable lack of homology to four other strains of A. citreus, deposited as ATCC 15170, ATCC 17775, ATCC 21040 and ATCC 21348 (11 -13 %) which themselves can be separated into two groups according to the homology data (24-31 ~). Each of the two strains of Brevibacterium share high genetic relatedness with one of these A. citreus groups (71 and 73 %, respectively). According to the DNA-DNA homology data, most of the species of Arthrobacter can actually be ranged taxonomically as species.