title: Long PCR-amplified rDNA for PCR-RFLP- and Rep-PCR-based approaches to recognize closely related microbial species.
abstract: Long PCR was used to amplify a 5-kb fragment of the bacterial ribosomal operon (16S-intergenic spacer region (ISR)-23S) from several Ralstonia eutropha strains (16S rDNA sequence similarity: 97-99%). Due to the large product size, amplicons from the different strains could be distinguished using restriction enzyme fragment length polymorphisms (RFLP) and repetitive PCR analysis (Rep-PCR) with the primer 1492r. These methods may prove useful in differentiating other bacterial strains with highly similar 16S rDNA sequences.
authors.affiliation: The Center for Environmental Biotechnology and Department of Microbiology, The University of Tennessee, Knoxville, TN 37996-1605, USA.
authors.forename: Desouky
authors.initials: D
authors.lastname: Abd-El-Haleem
authors.forename: Alice C
authors.initials: AC
authors.lastname: Layton
authors.forename: Gary S
authors.initials: GS
authors.lastname: Sayler
mesh_terms: D020118:Cupriavidus necator / Q000145:classification* / Q000235:genetics; D017931:DNA Primers; D004269:DNA, Bacterial / Q000235:genetics; D021903:DNA, Ribosomal Spacer / Q000032:analysis; D009876:Operon; D016133:Polymerase Chain Reaction / Q000379:methods*; D012150:Polymorphism, Restriction Fragment Length; D012336:RNA, Ribosomal, 16S / Q000032:analysis; D012338:RNA, Ribosomal, 23S / Q000032:analysis; D013045:Species Specificity
chemical_list: D017931:DNA Primers; D004269:DNA, Bacterial; D021903:DNA, Ribosomal Spacer; D012336:RNA, Ribosomal, 16S; D012338:RNA, Ribosomal, 23S