Fimbriae mediated nonspecific adhesion of Salmonella typhimurium to mineral particles |
| |
Authors: | Thor-Axel Stenström Staffan Kjelleberg |
| |
Institution: | (1) National Bacteriological Laboratory, S-10521 Stockholm, Sweden;(2) Department of Marine Microbiology, University of Göteborg, Carl Skottsbergs Gata 22, S-41319 Göteborg, Sweden |
| |
Abstract: | The adhesion of cells of Salmonella typhimurium to albite, biotite, felspar, magnetite and quartz was correlated to the presence of fimbriae and degree of hydrophobicity and charge of the bacterial surface. It was found that the presence of fimbriae resulted in a higher degree of adhesion compared to adhesion of nonfimbriated cells. The significance of the physico-chemical characteristics of fimbriae was shown by a direct linearity between high hydrophobicity of fimbriated cells and degree of adhesion to the mineral particles. Fimbriated cells exhibited higher negative as well as positive surface charge as compared to nonfimbriated cells. Adhesion to several of the minerals was shown to be independent of the extent of negative charges on the bacterial surfaces. A high degree of adhesion to biotite, possibly due to a combination of characteristics of the particles, was not related to either bacterial fimbriation or a physico-chemical characteristic of the bacterial surface. The results of the nonspecific adhesion observed are discussed in terms of available binding sites and distribution of physico-chemical characteristics on the bacterial cell surface structures. |
| |
Keywords: | Fimbriae Nonspecific adhesion Inanimate surfaces Mineral particles Bacterial hydrophobicity Bacterial charges Salmonella typhimurium |
本文献已被 SpringerLink 等数据库收录! |
|