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首页> 外文期刊>Annual review of marine science >Rethinking Sediment Biogeochemistry After the Discovery of Electric Currents
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Rethinking Sediment Biogeochemistry After the Discovery of Electric Currents

机译：电流发现后对沉积物生物地球化学的反思

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The discovery of electric currents in marine sediments arose from a simple observation that conventional biogeochemistry could not explain: Sulfide oxidation in one place is closely coupled to oxygen reduction in another place, centimeters away. After experiments demonstrated that this resulted from electric coupling, the conductors were found to be long, multicellular, filamentous bacteria, now known as cable bacteria. The spatial separation of oxidation and reduction processes by these bacteria represents a shortcut in the conventional cascade of redox processes and may drive most of the oxygen consumption. In addition, it implies a separation of strong proton generators and consumers and the formation of measurable electric fields, which have several effects on mineral development and ion migration. This article reviews the work on electric currents and cable bacteria published through April 2014, with an emphasis on general trends, thought-provoking consequences, and new questions to address.
机译：在海洋沉积物中发现电流的原因是简单的观察，传统的生物地球化学无法解释这一现象：一个地方的硫化物氧化与另一处几厘米远的地方的氧还原紧密相关。在实验证明这是电耦合导致的之后，发现导体是长的，多细胞的丝状细菌，现在被称为电缆细菌。这些细菌在氧化和还原过程之间的空间分离代表了传统的氧化还原过程级联中的捷径，并可能驱动大部分氧气消耗。此外，这意味着将强质子发生器和消耗者分开，并形成可测量的电场，这对矿物的发展和离子迁移具有多种影响。本文回顾了截至2014年4月出版的有关电流和电缆细菌的工作，重点是总体趋势，发人深省的后果以及需要解决的新问题。

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