Send to

Choose Destination
J Microbiol Methods. 2012 May;89(2):95-8. doi: 10.1016/j.mimet.2012.02.013. Epub 2012 Mar 3.

Simple DNA transformation in Pseudomonas based on the Yoshida effect.

Author information

Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas, Madrid, Spain.


Current protocols of recombinant DNA research, including gene cloning and complementation, quantification of gene expression and tagging with reporter proteins, are usually limited by the availability of effective bacteria transformation tools different from Escherichia coli. This is particularly relevant with respect to the Pseudomonas species due to their biotechnological and sanitary importance. Here, we describe an optimized and efficient plasmid transference protocol based on the Yoshida effect, a method that relies on DNA uptake mediated by friction forces. The main advantages of this method are: (i) no competent cell preparation is needed, (ii) cells in any physiological state can be used, (iii) the procedure is performed directly on agar plates and (iv) the protocol, which is neither time-consuming nor labor-intensive, offers good efficiency. This approach promises to become the gold standard for day to day genetic manipulation in Pseudomonas.

[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center