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| Autores principales: | , , |
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| Formato: | Artículo científico |
| Lenguaje: | en |
| Publicado: |
International journal of systematic and evolutionary microbiology
2025
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| Materias: | |
| Acceso en línea: | https://pubmed.ncbi.nlm.nih.gov/41032358/ |
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- sp. nov. and sp. nov., isolated from the seaweed dominating green tides in the Yellow Sea. Lv, Xiaojing Zhao, Jin Jiang, Peng Ulva Phylogeny RNA, Ribosomal, 16S Fatty Acids Bacterial Typing Techniques Base Composition Nucleic Acid Hybridization DNA, Bacterial Sequence Analysis, DNA Seawater Alteromonas China Genome, Bacterial Seaweed Edible Seaweeds Strains A079 and A081 were isolated from the floating seaweed , which is the dominant species of the world's largest green tides in the Yellow Sea. Both strains were Gram-stain-negative, aerobic and motile via a single polar flagellum. The major fatty acids of the two strains were C, C ω8c, C ω7c and summed feature 3 (C ω7c and/or C ω6c). Cells of the strain A079 were oval or short rod-shaped. Cells of the strain A081 were rod-shaped. A079 grew at 10-37 °C, pH 6.0-10.0 and 1-12% (w/v) NaCl. A081 grew at 10-40 °C, pH 6.0-11.0 and 1-12% (w/v) NaCl. Phylogenetic analyses based on 16S rRNA genes and whole-genome sequences revealed that strains A079 and A081 belong to the genus . The average nucleotide identity and digital DNA-DNA hybridization values between strains A079, A081 and related species ranged from 68.98 to 88.75% and 20.40 to 36.40%, respectively. Comparative genomic analysis discovered that A079 possessed a unique RiPP-like (TP-1161) cluster. Strain A089 exhibited the potential to utilize ulvan, and an acyl-homoserine lactone synthesis gene cluster was predicted in the strain. These findings reveal possible mechanisms for phycosphere adaptation. Phenotypic, chemotaxonomic, phylogenetic and genomic evidence support that strains A079 and A081 represent two novel species of the genus , for which the names sp. nov. (type strain A079=MCCC 1K09912=KCTC 18157) and sp. nov. (type strain A081=MCCC 1K09913=KCTC 18158) are proposed.