Das A, Caccavo F
Department of Microbiology, Rudman Hall, University of New Hampshire, Durham, NH 03824, USA.
Curr Microbiol. 2000 May;40(5):344-7. doi: 10.1007/s002849910068.
The Derjaguin-Landau-Verwey-Overbeek (DLVO) theory was used to examine the relationship between adhesion and dissimilatory Fe(III) oxide reduction. Adhesion of Shewanella alga BrY to hydrous ferric oxide (HFO) was correlated with ionic strength and thus was accurately described by the DLVO theory. Reduction of insoluble HFO was also correlated with KCl concentration. In contrast, there was no correlation between soluble Fe(III) reduction and ionic strength. A correlation between HFO reduction rate and adhesion to HFO was observed. These results provide direct evidence that adhesion is requisite for Fe(III) oxide reduction in the absence of soluble electron shuttles.
德亚金-朗道-韦弗-奥弗贝克（DLVO）理论被用于研究粘附与异化铁（III）氧化物还原之间的关系。海藻希瓦氏菌BrY对水合氧化铁（HFO）的粘附与离子强度相关，因此可以用DLVO理论准确描述。不溶性HFO的还原也与KCl浓度相关。相比之下，可溶性铁（III）还原与离子强度之间没有相关性。观察到HFO还原速率与对HFO的粘附之间存在相关性。这些结果提供了直接证据，表明在没有可溶性电子穿梭体的情况下，粘附是氧化铁还原的必要条件。
