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Abstract
A novel strain of the genus Lactobacillus , named AMBV1719T, was isolated from the vagina of a healthy participant in our large-scale citizen science project on the female microbiome, named Isala. Phylogenetic analysis showed that the 16S rRNA gene of AMBV1719T is most similar to that of Lactobacillus taiwanensis with a sequence similarity of 99.873 %. However, a genome-wide comparison using average nucleotide identity (ANI) revealed that isolate AMBV1719T showed the highest ANI with Lactobacillus paragasseri JCM 5343T, with a value of only 88.17 %. This low ANI value with the most closely related strains known to date indicated that AMBV1719T represents a distinct species. This strain has a limited ability to degrade carbon sources compared to Lactobacillus gasseri , indicating its adaptation to the host. Its genome has a length of 2.12 Mb with a G+C content of 34.8 mol%. We thus propose the name Lactobacillus isalae sp. nov. for this novel species, with AMBV1719T (=LMG 32886T=CECT 30756T) as the type strain.
- Received:
- Accepted:
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Funding
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UAntwerp
(Award FFI220319)
- Principle Award Recipient: SarahLebeer
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UAntwerp
(Award FFB220205)
- Principle Award Recipient: StijnWittouck
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UAntwerp
(Award FFI220247)
- Principle Award Recipient: SarahLebeer
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FWO
(Award 1SD0622N)
- Principle Award Recipient: LeonoreVander Donck
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HORIZON EUROPE European Research Council
(Award 852600)
- Principle Award Recipient: LebeerSarah