Ov. Lotareva et Aa. Prozorov, Effect of the clay minerals montmorillonite and kaolinite on the genetic transformation of competent Bacillus subtilis cells, MICROBIOLOG, 69(5), 2000, pp. 571-574
The effect of the clay minerals montmorillonite and kaolinite on the transf
ormation of competent Bacillus subtilis cells with chromosomal DNA was stud
ied. Clay particles were found to substantially increase the transformation
frequency of competent cells, as well as the rate of their spontaneous chr
omosomal and plasmid transformation. The effect was ascribed to the adsorpt
ion of bacterial cells on the surface of mineral particles.