Plasmids in Listeria
Thirty-two Listeria strains, including L. monocytogenes of the different Seeliger serovars, L. grayi and L. murrrayi , have been analyzed for the presence of plasmids. A cryptic plasmid of 38.5 Md was found in seven strains: in four L. monocytogenes (serovars 1/2c, 4b, 4d, and Ivanov 1), and in both...
Saved in:
Published in | Plasmid Vol. 8; no. 2; pp. 112 - 118 |
---|---|
Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
United States
01.01.1982
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | Thirty-two Listeria strains, including L. monocytogenes of the different Seeliger serovars, L. grayi and L. murrrayi , have been analyzed for the presence of plasmids. A cryptic plasmid of 38.5 Md was found in seven strains: in four L. monocytogenes (serovars 1/2c, 4b, 4d, and Ivanov 1), and in both the L. grayi and the single L. murrayi strains. Restriction enzyme cleavage analysis with two restriction enzymes suggests that the plasmid is a single molecular species, pRYC16. Conjugation experiments between Streptococcus agalactiae BM6101 containing the resistance plasmid pIP501 and L. monocytogenes, L. garayi , or L. murrayi demonstrated that pIP501 is transferred to Listeria at a mean frequency of 10 super(-6). pIP501 is fully expressed in Listeria and promotes its own transfer between strains of Listeria and from Listeria back to Streptococcus . It is suggested that a circulation of plasmids can take place among members of the genera Listeria and Streptococcus . |
---|---|
Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2 |
ISSN: | 0147-619X |
DOI: | 10.1016/0147-619X(82)90049-X |