Abstract
A taxonomic study of 35 cultures of prosthecate bacteria of the genera Brevundimonas and Caulobacter isolated from various soil and aquatic ecosystems of Eurasia was performed by amplified ribosomal DNA restriction analysis (ARDRA) and 16S rRNA gene sequencing. The most widespread groups of prosthecate bacteria belonging to these genera were revealed; at least two new species belonging to the genus Brevundimonas were found. The genus Brevundimonas includes both prosthecate and non-prosthecate species; however, it is quite possible that some Brevundimonas species may exhibit heterogeneity in such an important taxonomic characteristics as the ability to form prosthecae.
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