Abstract
Pathogenic and nonpathogenic strains of Agrobacterium tumefaciens (i.e., biovar 1), A. rhixogenes (i.e., biovar 2), A. vitis (i.e., biovar 3), and A. rubi were tested for their ability to utilize 95 different carbon sources available in the GN Microplate system and analyzed for fatty acid content using the MIDI gas-liquid chromatography system. Several carbon sources were identified as being of diagnostic value. With the exception of the A, rubi strain, hydroxy-L-proline and i-erythritol were exclusively metabolized by A. tumefaciens and A. rhizogenes, respectively. Analysis of fatty acid composition confirmed that cis-vaccenic acid (18:1 ω cis) is the predominant acid in all the Agrobacterium strains [...]
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