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INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo International Journal of Systematic and Evolutionary Microbiology

Volume 75, Issue 3

Taxonomic revision of the family : proposal of gen. nov., gen. nov., gen. nov. and gen. nov., along with the reclassification of Jiang . 2024 as a later heterotypic synonym of Du . 2023 No Access

Abstract

Phylogenetic analysis of the genus , utilizing both 16S rRNA gene sequences and comprehensive whole-genome data, revealed its polyphyletic nature, necessitating a revision to accommodate phylogenetically distinct species. Based on established threshold values for genus demarcation – specifically, 16S rRNA gene similarity, Average Amino Acid Identity and Percentage of Conserved Proteins – a notably substantial divergence was observed within the genus , and the division of into four distinct genera is strongly supported. To address this, we propose the establishment of four new genera: gen. nov., gen. nov., gen. nov. and gen. nov. These classifications accommodate species that are significantly divergent from the type species of , thereby more accurately reflecting their distinct evolutionary lineages. Additionally, is proposed to be reclassified within the genus as comb. nov. based on phylogenetic evidence indicating a closer evolutionary relationship to species than to other members of . Our analysis, which included assessments of 16S rRNA gene similarity, Average Nucleotide Identity, and digital DNA–DNA hybridization values exceeding species delineation thresholds, further supports the reclassification of Jiang . 2024 as a later heterotypic synonym of Du . 2023.

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  • Accepted:
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Keyword(s): 16S rRNA gene , Antarcticirhabdus , Aurantimonadaceae , Aureimonas , Average Amino Acid Identity (AAI) , Average Nucleotide Identity (ANI) , digital DNA–DNA hybridization (dDDH) , Percentage of Conserved Proteins (POCP) and phylogeny
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2025-03-28
2026-01-24

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/content/journal/ijsem/10.1099/ijsem.0.006733
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Taxonomic revision of the family Aurantimonadaceae: proposal of Dennerimonas gen. nov., Mesocryomonas gen. nov., Rathsackimonas gen. nov. and Plantimonas gen. nov., along with the reclassification of Jeongeupella Jiang et al. 2024 as a later heterotypic synonym of Antarcticirhabdus Du et al. 2023
Int J Syst Evol Microbiol 75, 006733 (2025); https://doi.org/10.1099/ijsem.0.006733
/content/journal/ijsem/10.1099/ijsem.0.006733
/content/journal/ijsem/10.1099/ijsem.0.006733
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