Sarrella massiliensis gen. nov. sp. nov., a new gut genus isolated from the stool of a healthy donor

Strain Marseille-QA0792 was isolated from a healthy donor’s feces and supports a new gut genus, Sarrella massiliensis gen. nov., sp. nov., with 16S rRNA identity of 96.2% to Merdibacter massiliensis.

• Why it matters: Culturomics is needed to expand knowledge of the human gut microbiome beyond what existing taxa capture, especially for newly cultured anaerobes from real donor material.
• What they did: Using culturomics, the strictly anaerobic, Gram-stain-negative rod strain was characterized and compared by 16S rRNA and ANI, then sequenced to a 2.67 Mb genome with 50.01% G+C content.
• The result: The combination of 96.2% 16S rRNA identity with only 75.0% ANI, plus low ANI versus other valid species, enabled proposing Sarrella massiliensis gen. nov., sp. nov. and underscores ongoing culturomics discovery potential.

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