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UNIVERSITY OF CALIFORNIA, DAVIS

 

 

BERKELEY * DAVIS * IRVINE * LOS ANGELES * RIVERSIDE * SAN DIEGO * SAN FRANCISCO SANTA BARBARA * SANTA CRUZ

 

 

 

COLLEGE OF LETTERS AND SCIENCE DAVIS, CALIFORNIA 95616
DEPARTMENT OF BACTERIOLOGY

7 October 1974

Professor Joshua Lederberg
Department of Genetics
Stanford University

School of Medicine
Stanford, California 94304

Dear Dr. Lederberg:

Please excuse my delay in answering your letter. I have recently
moved to U.C. Davis and since your letter was sent to my old address in
Hawaii the delay was inevitable.

Concerning Eagon's finding that B. natriegens has a very rapid growth
rate, I have recently heard that Dr. George Hageman could not repeat this
observation. When grown on a complex media (0.5% tryptone + 0.5% yeast
extract, + 0.2% glycerol) many of the beneckeas have at 28°C a generation
time of 28-40 minutes. On a minimal medium with 0.2% D-glucose, the
generation time is 50-60 minutes. Since I don't think these generation
times are particularly unusual, I wil]? not send strains at this time unless
you specifically make a request.

Dr. D. G. MacPhee at the Department of Genetics and Human Variation,
La Trobe University, Bundoora, Victoria 3083, Australia, has recently
requested several strains of B. natriegens to study DNA repair. I don't
know if he has been able to repeat Eagon's observations and I suggest that
you write to him.

Enclosed is a set of our reprints dealing with marine bacteria. Should
you still want strains, please let me know.

Sincerely,

AL , Pa a VI ae

Paul Baumann
eel ecm

PB:emc

Enclosures |
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