title: DNA-DNA homology studies among strains of Arthrobacter and Brevibacterium.
abstract: Sixteen named strains of Arthrobacter and two strains of Brevibacterium 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% 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.
mesh_terms: D001173:Arthrobacter / Q000145:classification*; D001951:Brevibacterium / Q000145:classification*; D004269:DNA, Bacterial / Q000032:analysis*; D009690:Nucleic Acid Conformation; D009693:Nucleic Acid Hybridization; D010457:Peptidoglycan / Q000032:analysis
chemical_list: D004269:DNA, Bacterial; D010457:Peptidoglycan