Experimental oxygen consumption data for two iron oxidizing bacteria with pyrrhotite as iron source from April to December 2018

<p>Previous experiments in this dataset have incubated FeOB with zero-valent iron as an iron source. Zero-valent iron is relatively rare in natural environments, however. Mariprofundus ferrooxydans PV-1 and Ghiorsea bivora TAG-1 were therefore grown on pyrrhotite powder at 20°C to examine how they affect oxidation rates of natural iron minerals. Oxygen was measured as a proxy for iron oxidation. M. ferrooxydans PV-1 decreased net iron oxidation rates, while G. bivora TAG-1 increased net iron oxidation rates.</p>

本数据集此前的实验以零价铁（zero-valent iron）作为铁源对铁氧化细菌（FeOB）进行了富集培养。但零价铁在自然环境中相对稀缺。为此，研究团队在20℃条件下以磁黄铁矿（pyrrhotite）粉末为铁源，培养Mariprofundus ferrooxydans PV-1与Ghiorsea bivora TAG-1两株铁氧化细菌，以探究二者对天然铁矿物氧化速率的影响。实验以氧气浓度作为铁氧化过程的替代检测指标，结果显示：Mariprofundus ferrooxydans PV-1会降低净铁氧化速率，而Ghiorsea bivora TAG-1则可提升净铁氧化速率。