Type strains of 72 validated Nocardia species were phylogenetically analyzed based on the multilocus sequence analysis (MLSA) concatenated atpD-groL1-groL2-recA-rpoA-secY-sodA-ychF. Furthermore, their similarity based on digital DNA-DNA hybridization (dDDH) was calculated. Nocardia soli, Nocardia cummidelens and Nocardia salmonicida, Nocardia nova and Nocardia elegans, Nocardia exalbida and Nocardia gamkensis, and Nocardia coubleae and Nocardia ignorata formed coherent clades, respectively. Moreover, each set showed over 70% relatedness by dDDH and shared common phenotypic characteristics. Therefore, we propose a reclassification of Nocardia soli and Nocardia cummidelens as a later heterotypic synonym of Nocardia salmonicida, Nocardia elegans as a later heterotypic synonym of Nocardia nova, Nocardia gamkensis as a later heterotypic synonym of Nocardia exalbida, and Nocardia coubleae as a later heterotypic synonym of Nocardia ignorata.

中文翻译：

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根据完整的基因组序列和相关的表型数据对诺卡氏菌物种进行重新分类。

基于多基因座序列分析（MLSA），将atpD-groL1-groL2-recA-rpoA-secY-sodA-ychF串联在一起，对72种经过验证的诺卡氏菌的类型菌株进行了系统发育分析。此外，基于数字DNA-DNA杂交（dDDH）计算了它们的相似性。诺卡氏菌，诺卡氏菌和鲑鱼诺卡氏菌，诺卡氏菌新星和线虫，诺卡氏菌诺卡氏菌和诺卡氏菌，诺卡氏菌和诺卡氏菌分别形成连贯的进化枝。此外，每组都显示出dDDH超过70％的相关性，并具有共同的表型特征。因此，我们建议将Nocardia soli和cummidelens重命名为鲑鱼Nocardia salicida的较晚异型同义词，将线虫Nocardia elegans重新分类为Nocardia nova的较晚异型同义词，