Affiliation:
1. Department of Biological Sciences, Northwestern University, Evanston, Illinois
Abstract
Heberlein, Gary
T. (Northwestern University, Evanston, Ill.),
and James A. Lippincott
. Photoreversible ultraviolet enhancement of infectivity in
Agrobacterium tumefaciens
. J. Bacteriol.
89:
1511–1514. 1965.—Irradiation of a virulent strain of
Agrobacterium tumefaciens
with short-wavelength ultraviolet light, which reduces viability 50 to 90%, increases its infectivity as measured by the number of tumors initiated per viable bacterial cell on primary pinto bean leaves. A dark treatment of 1.5 to 2 hr between irradiation and inoculation results in a further increase in specific infectivity of as much as fourfold. This increase in infectivity is inhibited by white fluorescent light and light of 402 mμ, but only slightly by 549- or 619-mμ light. These results imply that some change in the deoxyribonucleic acid of the bacterium is responsible for this effect.
Publisher
American Society for Microbiology
Subject
Molecular Biology,Microbiology
Reference5 articles.
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5. HAYNES R. H. 1964. Molecular localizationi of radiation damage relevant to bacterial inactivation p. 51-68. In L. Augenstein R. Mason and B. Rosenberg [ed.] Physical processes in radiation biology. Academic Press Inc. New York.
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