Colloidal clay inhibits conjugal transfer of R-plasmid R1drd-19 in Escherichia coli
نویسندگان
چکیده
منابع مشابه
Colloidal clay inhibits conjugal transfer of R-plasmid R1drd-19 in Escherichia coli.
Colloidal clay (montmorillonite) strongly inhibited the conjugal transfer of R-plasmid R1drd-19 in Escherichia coli. This finding is discussed in the context of the feasibility of plasmid transfer in environmental waters.
متن کاملThe infidelity of conjugal DNA transfer in Escherichia coli.
The accuracy of replication and transfer of a lacI gene on an F' plasmid was measured. Following conjugal transfer of the F', a small but reproducible increase (1.8-fold) in the frequency of lacI- mutations was detected. Among these, however, the frequency of nonsense mutations was 15-fold higher than in the absence of transfer. This corresponds to a 300-fold increase in the rate of base substi...
متن کاملConjugal fertility associated with resistance factor R in Escherichia coli.
Sugino, Yoshinobu (Osaka University, Osaka, Japan) and Yukinori Hirota. Conjugal fertility associated with resistance factor R in Escherichia coli. J. Bacteriol. 84:902-910. 1962.-The introduction of the contagious drug-resistance factor, R, into an F(-) strain of Escherichia coli allows the R(+)F(-) strain to mate with F(-)R(-) strains. The chromosome fragment transferred from the R(+) cell is...
متن کاملHigh-frequency conjugal plasmid transfer from gram-negative Escherichia coli to various gram-positive coryneform bacteria.
We report on the mobilization of shuttle plasmids from gram-negative Escherichia coli to gram-positive corynebacteria mediated by P-type transfer functions. Introduction of plasmids into corynebacteria was markedly enhanced after heat treatment of the recipient cells. High-frequency plasmid transfer was also observed when the restriction system of the recipient was mutated. On the basis of our ...
متن کاملAnaerobic R factor transfer in Escherichia coli.
R factor mediated transfer of antibiotic resistance between Enterobacteriaceae has been reported to occur in the mammalian gastrointestinal tract (Kasuya, I 964; Reed, Sieckmann & Georgi, 1969; Guinie, 1970; Wiedemann, Knothe & Doll, 1970) where conditions are mainly anaerobic as demonstrated by the abundance of obligate anaerobic bacteria such as Bacteroides species (Moore, Cat0 & Holdeman, 19...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Applied and Environmental Microbiology
سال: 1983
ISSN: 0099-2240,1098-5336
DOI: 10.1128/aem.46.3.756-757.1983