Affiliation:
1. Department of Biological Sciences, Northwestern University, Evanston, Illinois 60201
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.
Publisher
American Society for Microbiology
Subject
Molecular Biology,Microbiology
Reference14 articles.
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5. Promotion of crown-gall tumor growth by Iysopine, octopine, nopaline and camosine;Lippincott J. A.;Plant Physiol.,1972
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