Microorganisms · Published 2026-08-04 · DOI 10.3390/microorganisms14081706
Yanjiao Zhang, Xinyu Liu, Hao Yu, Xiuqing Yang
A Gram-stain-negative, rod-shaped, aerobic strain CY06<sup>T</sup> was isolated from surface marine sediment sample of the Yellow Sea, China. The strain was positive for oxidase and catalase and could reduce nitrate to nitrite but not further to gaseous nitrogen products. Phylogenetic analysis based on 16S rRNA gene sequences and the up-to-date bacterial core gene (UBCG) sequences revealed that strain CY06<sup>T</sup> formed a distinct clade within the genus <i>Parasedimentitalea</i>. Genomic comparisons, including digital DNA-DNA hybridization (dDDH), average nucleotide identity (ANI) and average amino acid identity (AAI), clearly distinguished strain CY06<sup>T</sup> from other members of the genus. The morphological, physiological, biochemical and chemotaxonomic data further supported its differentiation from closely related species. Based on the polyphasic evidence, a new species, <i>Parasedimentitalea nitratireducens</i> sp. nov., is proposed, with the type strain CY06<sup>T</sup> (=MCCC 1K08636<sup>T</sup> = KCTC 72006<sup>T</sup>).
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Zhang, Y., Liu, X., Yu, H., et al. (2026). Parasedimentitalea nitratireducens sp. nov., a Novel Nitrate-Reducing Bacterium Isolated from the Yellow Sea. Microorganisms. https://doi.org/10.3390/microorganisms14081706