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Title: Cell Adhesion of Shewanella Oneidensis to Iron Oxide Minerals: Effect of Different Single Crystal Faces

Abstract

The results of experiments designed to test the hypothesis that near-surface molecular structure of iron oxide minerals influences adhesion of dissimilatory iron reducing bacteria are presented. These experiments involved the measurement, using atomic force microscopy, of interaction forces generated between Shewanella oneidensis MR-1 cells and single crystal growth faces of iron oxide minerals. Significantly different adhesive force was measured between cells and the (001) face of hematite, and the (100) and (111) faces of magnetite. A role for electrostatic interactions is apparent. The trend in relative forces of adhesion generated at the mineral surfaces is in agreement with predicted ferric site densities published previously. These results suggest that near-surface structure does indeed influence initial cell attachment to iron oxide surfaces; whether this is mediated via specific cell surface-mineral surface interactions or by more general interfacial phenomena remains untested.

Authors:
; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
877007
Report Number(s):
PNNL-SA-48144
KP1704020
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Geochemical Transactions, 6(4):77-84; Journal Volume: 6; Journal Issue: 4
Country of Publication:
United States
Language:
English

Citation Formats

Neal, Andrew L., Bank, Tracy L., Hochella, Michael F., and Rosso, Kevin M. Cell Adhesion of Shewanella Oneidensis to Iron Oxide Minerals: Effect of Different Single Crystal Faces. United States: N. p., 2005. Web. doi:10.1063/1.2151110.
Neal, Andrew L., Bank, Tracy L., Hochella, Michael F., & Rosso, Kevin M. Cell Adhesion of Shewanella Oneidensis to Iron Oxide Minerals: Effect of Different Single Crystal Faces. United States. doi:10.1063/1.2151110.
Neal, Andrew L., Bank, Tracy L., Hochella, Michael F., and Rosso, Kevin M. Fri . "Cell Adhesion of Shewanella Oneidensis to Iron Oxide Minerals: Effect of Different Single Crystal Faces". United States. doi:10.1063/1.2151110.
@article{osti_877007,
title = {Cell Adhesion of Shewanella Oneidensis to Iron Oxide Minerals: Effect of Different Single Crystal Faces},
author = {Neal, Andrew L. and Bank, Tracy L. and Hochella, Michael F. and Rosso, Kevin M.},
abstractNote = {The results of experiments designed to test the hypothesis that near-surface molecular structure of iron oxide minerals influences adhesion of dissimilatory iron reducing bacteria are presented. These experiments involved the measurement, using atomic force microscopy, of interaction forces generated between Shewanella oneidensis MR-1 cells and single crystal growth faces of iron oxide minerals. Significantly different adhesive force was measured between cells and the (001) face of hematite, and the (100) and (111) faces of magnetite. A role for electrostatic interactions is apparent. The trend in relative forces of adhesion generated at the mineral surfaces is in agreement with predicted ferric site densities published previously. These results suggest that near-surface structure does indeed influence initial cell attachment to iron oxide surfaces; whether this is mediated via specific cell surface-mineral surface interactions or by more general interfacial phenomena remains untested.},
doi = {10.1063/1.2151110},
journal = {Geochemical Transactions, 6(4):77-84},
number = 4,
volume = 6,
place = {United States},
year = {Fri Dec 02 00:00:00 EST 2005},
month = {Fri Dec 02 00:00:00 EST 2005}
}