Dissimilatory Fe(III) oxide reduction by Shewnnella alga BrY requires adhesion
Dissimilatory Fe(III) oxide reduction by Shewnnella alga BrY requires adhesion
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DOI：
10.1007/s002849910068
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发表时间：
2000-05-01
影响因子：
2.6
通讯作者：
Caccavo, F
中科院分区：
文献类型：
--
作者：
Das, A;Caccavo, F
Dejaguin-Landau-Verwey-Overbeek（DLVO）理论被用来研究粘附和异化Fe（III）氧化物还原之间的关系。希瓦氏菌（Shewanella）对水合氧化铁（HFO）的粘附与离子强度相关，因此可用DLVO理论准确描述。不溶性HFO的减少也与KCl浓度相关。与此相反，可溶性铁（III）的还原和离子强度之间没有相关性。观察到HFO减少率与HFO粘附之间的相关性。这些结果提供了直接的证据表明，粘附力是必要的Fe（III）氧化物还原在不存在可溶性电子穿梭。
The Dejaguin-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 KCI 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.