Filamentous iron oxides accumulating bacteria Sphaerotilus natans subsp. natans and S. natans subsp. sulfidivorans were described as subspecies based on 99.7% identity of their 16S rRNA sequences, in spite of important physiological difference. The ANI between their genomes was 94.7%, which indicate their assignment to different species. S. natans subsp. sulfidivorans and S. montanus possess genes for a complete SOX system, while S. natans subsp. natans encode only SoxYZ. There are genes for the Calvin cycle in the genomes of S. hippei DSM 566T, S. natans subsp. sulfidivorans D-501T, and S. montanus HST. Lithoautotrophy on reduced sulfur compounds is probably possible for S. natans subsp. sulfidivorans and S. montanus, but not for S. natans subsp. natans. Considering significant differences in the genome characteristics and metabolic potential of S. natans subsp. sulfidivorans and S. natans subsp. natans, we propose their classification as different species, S. natans and S. sulfidivorans sp. nov.

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Sphaerotilus natans subsp. 的重新分类。硫化物 Gridneva 等。2011 年作为 Sphaerotilus sulfidivorans sp。十一月 和 Sphaerotilus 属的比较基因组分析

丝状氧化铁积累细菌 Sphaerotilus natans subsp。natans 和 S. natans subsp。尽管存在重要的生理差异，但根据其 16S rRNA 序列的 99.7% 同一性，将硫食动物描述为亚种。它们基因组之间的 ANI 为 94.7%，这表明它们属于不同的物种。S. natans subsp。sulfidivorans 和 S. montanus 拥有完整 SOX 系统的基因，而 S. natans subsp。natans 只编码 SoxYZ。S. hippei DSM 566T, S. natans subsp. 的基因组中有卡尔文循环的基因。硫化物 D-501T 和 S. montanus HST。对于 S. natans subsp. 来说，还原硫化合物的岩石自养可能是可能的。sulfidivorans 和 S. montanus，但不适用于 S. natans subsp。纳坦斯。考虑到 S. natans subsp. 基因组特征和代谢潜力的显着差异。sulfidivorans 和 S. natans subsp。natans，我们建议将它们分类为不同的物种，S. natans 和 S. sulfidivorans sp。十一月