Identification of Acetobacter, Gluconobacter, and Asaia Strains Isolated in Thailand Based on 16S-23S rRNA Gene Internal Transcribed Spacer Restriction and 16S rRNA Gene Sequence Analyses

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Twenty-six strains of acetic acid bacteria were isolated from fruits, flowers and related materials collected in Thailand. They were divided into three genera, Acetobacter, Gluconobacter and Asaia, by phenotypic characterization and 16S rRNA gene sequence analyses. On the basis of 16S-23S rRNA gene internal transcribed spacer (16S-23S rDNA ITS) restriction and 16S rRNA gene sequence analyses, fourteen isolates assigned to the genus Acetobacter were divided into five groups: 1) Group 1A or A. tropicalis (one isolate); 2) Group 2A or A. orientalis (four isolates); 3) Group 3A or A. pasteurianus (five isolates); 4) Group 4A or A. syzygii (one isolate); and 5) Group 5A or A. ghanensis (three isolates). The eleven isolates assigned to the genus Gluconobacter were divided into three groups: 6) Group 1B or G. frateurii (four isolates); 7) Group 2B or G. japonicus (six isolates); and 8) Group 3B or unidentified (one isolate). The remaining isolate was placed into: 9) Group 1C or unidentified, which was assigned to the genus Asaia and considered to constitute a new species on the basis of the 16S rRNA gene sequence analysis and DNA-DNA hybridization.
日本微生物生態学会・日本土壌微生物学会の論文
2009-06-01