Biofilm coating

U. linza spores adhere more strongly to SAMs of decreasing hydrophobicity (Finlay et al. 2002). Although settling preferentially on surfaces that provide the weakest attachment appears quite maladaptive, in nature an algal spore would virtually always be settling on a biofilm-coated surface (Callow and Callow 2006) rather than a clean surface such as those presented by SAMs. Presumably, in the microenvironments within a biofilm, selective settlement on relatively hydrophobic surfaces is adaptive, but this remains to be demonstrated experimentally. 

The results of the XSW study by Templeton et al. [180] show that Pb2+ binds initially to reactive sites on the a-Al203 (1-102) and a-Fe203 (0001) surfaces even with a biofilm coating that covers essentially the entire mineral surface, as shown by SEM and confocal microscopy studies. The order of reactivity of these biofilm-coated surfaces for Pb(II) [a-Fe203 (0001) > a-Al203 (1-102) >> a-Al203 (0001)] is the same as that observed in uptake and EXAFS studies of Pb(II) sorption on biofilm-free alumina and hematite surfaces (Figure 7.22) (see [155-157]). 

Kim YH, Suk An E, Keun Song B et al (2003) Polymerization of cardanol using soybean peroxidase and its potential application as anti-biofilm coating material. Biotechnol Lett 25 1521-1524... 

Csikor Z, Mihaltz P, Czako L, Hollo J (1994) New interpretation of expansion in biofilm-coated particle fluidization. Appl Microbiol Biotechnol 41 608-614 Daffonchio D, Thaveeshi J, Verstraete W (1995) Contact angle measurement and cell hydrofobicity of granular sludge from UASB reactors. Appl Environ Microbiol 61(10) 3676-3680... 

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