Conductive Iron Oxides Promote Methanogenic Acetate Degradation by Microbial Communities in a High-Temperature Petroleum Reservoir
Conductive Iron Oxides Promote Methanogenic Acetate Degradation by Microbial Communities in a High-Temperature Petroleum Reservoir
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DOI：
10.1264/jsme2.me18140
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发表时间：
2019-02
影响因子：
2.2
通讯作者：
Souichiro Kato;K. Wada;W. Kitagawa;D. Mayumi;M. Ikarashi;T. Sone;Kozo Asano;Y. Kamagata
中科院分区：
文献类型：
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作者：
Souichiro Kato;K. Wada;W. Kitagawa;D. Mayumi;M. Ikarashi;T. Sone;Kozo Asano;Y. Kamagata
补充导电磁铁矿颗粒促进了高温石油储层生产水中富集的微生物群落对产甲烷乙酸盐的降解。微生物群落分析显示，石油热杆菌属。 （Deferribacteres 门），被称为嗜热 Fe(III) 还原剂，在磁铁矿补充的富集中占主导地位，而其他类型的 Fe(III) 还原剂，如 Thermincola spp。和 Thermotoga spp.，在水铁矿还原条件下占优势。这些结果表明，磁铁矿通过石油热杆菌属之间的导电颗粒通过电流诱导种间电子转移。和产甲烷菌。这是高温地下环境中可能存在电同步营养的第一个证据。
Supplementation with conductive magnetite particles promoted methanogenic acetate degradation by microbial communities enriched from the production water of a high-temperature petroleum reservoir. A microbial community analysis revealed that Petrothermobacter spp. (phylum Deferribacteres), known as thermophilic Fe(III) reducers, predominated in the magnetite-supplemented enrichment, whereas other types of Fe(III) reducers, such as Thermincola spp. and Thermotoga spp., were dominant under ferrihydrite-reducing conditions. These results suggest that magnetite induced interspecies electron transfer via electric currents through conductive particles between Petrothermobacter spp. and methanogens. This is the first evidence for possible electric syntrophy in high-temperature subsurface environments.