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J Bacteriol. Oct 1973; 116(1): 378–383.
PMCID: PMC246433

Utilization of Octopine and Nopaline by Agrobacterium

Abstract

Tests for utilization of d-octopine and nopaline in defined media containing a carbon and nitrogen source were made on 60 strains of Agrobacterium representing four species and on a representative of each of five species of Rhizobium. Among 46 virulent strains of Agrobacterium, only two strains were found which utilized neither compound, while three strains were found which could utilize both. Of the remaining virulent strains, 27 utilized octopine and 14 utilized nopaline. Each of six strains of A. rhizogenes tested utilized only octopine but at a slower rate relative to growth than most A. tumefaciens. All eight of the A. radiobacter strains failed to utilize either compound, as did four of six nonvirulent strains of A. tumefaciens. The rhizobia did not utilize octopine or, with the possible exception of R. japonicum, nopaline. Virulence in the genus Agrobacterium is concluded to be highly correlated with the ability to utilize one or both of these compounds.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.
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