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dc.contributor.authorDOMINGUES, R.
dc.contributor.authorCARVALHO, C. V. de
dc.contributor.authorREIS, D. R. de L.
dc.contributor.authorCOMIN, H. B.
dc.contributor.authorVERBISCK, N. V.
dc.contributor.authorNASSAR, A. F. de C.
dc.contributor.authorCARVALHO, W. A.
dc.contributor.authorCARDOSO, F. F.
dc.contributor.authorMACHADO, A. B. F.
dc.contributor.authorMARTINS, M. F.
dc.contributor.authorGASPAR, E. B.
dc.date.accessioned2026-07-14T12:53:49Z-
dc.date.available2026-07-14T12:53:49Z-
dc.date.created2026-07-02
dc.date.issued2026
dc.identifier.citationCurrent Microbiology, v. 83, art. 467, 2026.
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1187970-
dc.descriptionA novel bacterial species was isolated from the nasal mucosa of Hereford cattle exhibiting early clinical signs of infectious bovine keratoconjunctivitis on a beef cattle farm in the Pampa biome, southern Brazil, in 2018. Cells were Gram-stainnegative cocci and exhibited slow growth under standard laboratory conditions, with optimal growth at 35 °C, pH 7.5, and 1.0% NaCl. The draft genome comprised approximately 1.86 Mbp (GenBank accession number GCF_035181365.1). Phylogenetic analysis based on the 16 S rRNA gene sequence showed that the closest relative was arMoraxella nasibovis, with 97.9% sequence identity. Genome-based comparisons revealed average nucleotide identity (ANI) values ranging from 77% to 79% and digital DNA–DNA hybridization (dDDH) values ranging from 20.5% to 33.7% when compared to other Moraxella species, all below the accepted thresholds for species delineation. Phylogenomic analyses based on whole-genome and core gene datasets consistently placed the isolate in a distinct lineage within the genus Moraxella, most closely related to M. nasibovis and M. oculi. Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) did not match the isolate with any known Moraxella species. Morphological, physiological, and genomic analyses supported its classification within the genus Moraxella while clearly distinguishing it from previously described species. Based on the combined phenotypic and genomic evidence, we propose the novel species as Moraxella tarda sp. nov., with strain 7624LNᵀ (=CCP 570ᵀ = IAL 11705ᵀ = LMG 34122ᵀ) designated as the type strain.
dc.language.isoeng
dc.rightsopenAccess
dc.subjectCeratoconjuntivite
dc.subjectAnálise filogenômica
dc.titleMoraxella tarda sp. nov., a novel species isolated from nasal cavity of cattle with infectious bovine keratoconjunctivitis.
dc.typeArtigo de periódico
dc.subject.thesagroBovino
dc.subject.thesagroDoença Animal
dc.subject.thesagroBactéria
dc.subject.thesagroGenoma
dc.subject.nalthesaurusAnimal diseases
dc.subject.nalthesaurusGenome
riaa.ainfo.id1187970
riaa.ainfo.lastupdate2026-07-14
dc.identifier.doihttps://doi.org/10.1007/s00284-026-05050-6
dc.contributor.institutionROBERT DOMINGUES, CNPGL; CLARISSA VIDAL DE CARVALHO, UNIVERSIDADE FEDERAL DE JUIZ DE FORA; DANIELE RIBEIRO DE LIMA REIS FAZA, CNPGL; HELENA BROCARDO COMIN, UNIVERSIDADE FEDERAL DO PAMPA; NEWTON VALERIO VERBISCK, CNPGC; ALESSANDRA FIGUEIREDO DE CASTRO NASSAR, AGÊNCIA PAULISTA DE TECNOLOGIA DOS AGRONEGÓCIOS; WANESSA ARAUJO CARVALHO, CNPGL; FERNANDO FLORES CARDOSO, CPPSUL; ALESSANDRA BARBOSA FERREIRA MACHADO, UNIVERSIDADE FEDERAL DE JUIZ DE FORA; MARTA FONSECA MARTINS, CNPGL; EMANUELLE BALDO GASPAR, CNPGL.
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