Ward Lewis M, Li-Hau Fátima, Kakegawa Takeshi, McGlynn Shawn E
Department of Earth and Planetary Sciences, Harvard University.
Earth-Life Science Institute, Tokyo Institute of Technology.
Microbes Environ. 2021;36(3). doi: 10.1264/jsme2.ME21020.
Roseilinea is a novel lineage of Chloroflexota known only from incomplete metagenome-assembled genomes (MAGs) and preliminary enrichments. Roseilinea is notable for appearing capable of anoxygenic photoheterotrophy despite being only distantly related to well-known phototrophs in the Chloroflexia class such as Chloroflexus and Roseiflexus. Here, we present a high-quality MAG of a member of Roseilinea, improving our understanding of the metabolic capacity and phylogeny of this genus, and resolving the multiple instances of horizontal gene transfer that have led to its metabolic potential. These data allow us to propose a candidate family for these organisms, Roseilineaceae, within the Anaerolineae class.
玫瑰线菌是绿弯菌门的一个新谱系，目前仅从不完整的宏基因组组装基因组（MAGs）和初步富集培养物中得知。玫瑰线菌值得注意的是，尽管它与绿弯菌纲中诸如绿弯菌属和玫瑰弯菌属等著名光合营养菌的亲缘关系较远，但似乎具备无氧光异养能力。在此，我们展示了玫瑰线菌属一个成员的高质量MAG，增进了我们对该属代谢能力和系统发育的理解，并解析了导致其代谢潜力的多个水平基因转移实例。这些数据使我们能够为这些生物提出一个候选科——玫瑰线菌科，归属于厌氧绳菌纲。
