文章基本信息

标题：Cell adhesion of Shewanella oneidensis to iron oxide minerals: Effect of different single crystal faces
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作者：Andrew L Neal ; Tracy L Bank ; Michael F Hochella 等
期刊名称：Geochemical Transactions
电子版ISSN：1467-4866
出版年度：2005
卷号：6
期号：4
页码：1-8
DOI：10.1186/1467-4866-6-77
出版社：BioMed Central
摘要：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.
关键词：Magnetite;Hematite;Mineral Surface;Immobilize Cell;Shewanella