Roy E. Olson

Abstract

By infection of the non-lysogenic strain of S. potsdam, SP2, with the phages P9a/2 and P9/c three artificially lysogenized strains were isolated: SP2-9a, SP2-9c, and SP2-9ca. SP2 lysogenized with P9a could not further be lysogenized with P9c.

There was evidence from the induction data that the presence of P9c influenced the induction of phage P9a, although P9a did not appear to influence the induction of P9c. Much greater levels of free phage P9a were achieved in induced cultures of SP2-9ca than in induced cultures of SP2-9a.

There were marked differences in induction of both phages P9a and P9c between the naturally occurring lysogenic strain SP9 and the artificially lysogenized strain SP2-9ca. These differences were taken as evidence of a host modifying factor on induction, contrary to the more generally accepted belief that induction is exclusively a property of the prophage.

LLU Discipline

Microbiology

Department

Microbiology

School

Graduate School

First Advisor

Leonard R. Bullas

Second Advisor

Donovan A. Courville

Third Advisor

Gerhardt L. Dybdahl

Fourth Advisor

Robert L. Nutter

Fifth Advisor

Raymond E. Ryckman

Degree Name

Master of Science (MS)

Degree Level

M.S.

Year Degree Awarded

1965

Date (Title Page)

9-1965

Language

English

Library of Congress/MESH Subject Headings

Salmonella

Type

Thesis

Page Count

ix; 70

Digital Format

PDF

Digital Publisher

Loma Linda University Libraries

Usage Rights

This title appears here courtesy of the author, who has granted Loma Linda University a limited, non-exclusive right to make this publication available to the public. The author retains all other copyrights.

Collection

Loma Linda University Electronic Theses and Dissertations

Collection Website

http://scholarsrepository.llu.edu/etd/

Repository

Loma Linda University. Del E. Webb Memorial Library. University Archives

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