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1 Institute for Fermentation, Osaka, Yodogawa-ku, Osaka 532
2 Akitsu Branch, Fruit Tree Research Station, Ministry of Agriculture, Forestry and Fisheries, Akitsu, Hiroshima 729-24, Japan
3 Faculty of Agriculture, The University of Tokyo, Bunkyo-ku, Tokyo 113, Japan
* Corresponding author. Mailing address: Institute for Fermentation, Osaka, 17-85, Juso-honmachi 2-chome, Yodogawa-ku, Osaka 532, Japan. Phone: 06-300-6555. Fax: 06-300-6814.
ABSTRACT
To clarify the taxonomic relationships of the genera Rhizomonas and Sphingomonas, the 16S rRNA sequence of Rhizomonas suberifaciens IFO 15211T (T = type strain) was determined. A phylogenetic analysis of aligned 16S rRNA gene sequences revealed that eight species of the genus Sphingomonas and R. suberifaciens are closely related to Erythrobacter longus and Porphyrobacter neustonensis and, therefore, belong in the alpha-4 subclass of the Proteobacteria. Within this subclass, Sphingomonas species and R. suberifaciens are phylogenetically interrelated and comprise several subgroups. Our findings show that the genus and species definitions of these organisms are in need of revision.
Present address: National Institute of Agro-Environmental Sciences, 3-1-1, Kannondai, Tsukuba, Ibaraki 305, Japan. This article has been cited by other articles:
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