The complete genome sequence of Marinobacterium marisflavi strain IMCC4074ᵀ, originally isolated from coastal seawater of the Yellow Sea, is reported to provide insights into its genomic features, metabolic potential, and environmental adaptation.
Abstract
Members of the genus Marinobacterium are widely distributed in marine environments and contribute to diverse ecological processes; however, genomic information for several species remains limited. In this study, we report the complete genome sequence of Marinobacterium marisflavi strain IMCC4074ᵀ, originally isolated from coastal seawater of the Yellow Sea, to provide insights into its genomic features, metabolic potential, and environmental adaptation. The genome of strain IMCC4074ᵀ was sequenced using a combination of short- and long-read sequencing approaches and assembled into a single circular chromosome of 3,091,487 bp with a G + C content of 52.45%. Genome annotation revealed 2,974 protein-coding sequences, 15 rRNA genes, and 60 tRNA genes. Phylogenomic analyses confirmed its taxonomic placement within the genus Marinobacterium, while comparative genomic analysis revealed sufficient divergence (ANI ≤ 95%) from previously described species within the genus, supporting its distinction at the species level and representing the first genome report for this species. The availability of the complete genome provides a resource for understanding the potential ecological roles and adaptive strategies of M. marisflavi in marine ecosystems.
This article presents the draft genome sequence of strain MF0224, an anaerobic bacterium representing an unclassified Fusobacterium-related lineage isolated from a coastal sediment sample collected in Puducherry, India. Whole-genome sequencing was performed using the Illumina paired-end sequencing platform and assembled into a draft genome of 2.02 Mb comprising 26 contigs with a genomic DNA G+C content of 28.19%. Genome annotation predicted 1889 coding sequences, 47 tRNA genes, and multiple genes associated with anaerobic carbon metabolism, acetate production, sulfur metabolism, volatile fatty acid metabolism, and carbohydrate-active enzymes. Genome quality assessment indicated high completeness with low contamination. Comparative genomic analysis using TYGS identified the strain as a potential novel species within the genus Fusobacterium, supported by low digital DNA–DNA hybridization (dDDH) values (∼20%) relative to currently described species. Average amino acid identity (AAI; 68.9%) supported its placement within the genus Fusobacterium while indicating substantial genomic divergence. Comparative genomic analysis also determined a percentage of conserved proteins (POCP) value of 65.9%, providing additional genomic characterization of strain MF0224. Phylogenetic analyses based on 16S rRNA gene sequences and whole-genome phylogeny consistently positioned strain MF0224 within the Fusobacterium-associated clade. The genome provides a valuable resource for investigating anaerobic carbon metabolism, acetate biosynthesis, sulfur-associated pathways, and the ecological adaptation of Fusobacterium-related bacteria in coastal sediment ecosystems.
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A high-quality genome assembly and an in-depth genome analysis of V. victoriae strain D19 are presented, establishing a valuable foundation for future functional studies and providing keys for developing a new chassis for potential industrial applications.
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Genome analysis revealed a complete C5–C20 isoprenoid biosynthesis pathway and multiple biosynthetic gene clusters, including terpene-associated clusters with low similarity to previously characterized pathways, indicating the presence of biosynthetic potential distinct from previously characterized pathways.
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These genome data provide a genomic resource for future studies on functional characterization and probiotic-related properties and provide a genomic resource for future studies on functional characterization and probiotic-related properties.
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Members of the phylum
Actinomycetota
are widely distributed across diverse environments and are well known for their metabolic versatility and capacity to produce bioactive compounds. In this study, strain ZE1316R2Aᵀ was isolated from the saline water collected from Lake Zima (Morocco) and subjected to comprehensive polyphasic taxonomic characterisation. Phylogenetic analysis based on the 16 S rRNA gene placed strain ZE1316R2Aᵀ within the genus
Streptomyces
, showing highest sequence similarity with
S. albidoflavus
DSM 40,455
T
(99.71%). However, genome-based indices, including average nucleotide identity (ANIb = 94.84%, ANIm = 96.09%) and digital DNA-DNA hybridization (dDDH = 64.9%), supported its distinction as a separate species. The draft genome (7.41 Mb; G + C = 73.26 mol%) comprises 6,464 coding sequences and reveals the presence of strain-specific genomic regions and biosynthetic gene clusters. Comparative analyses highlighted both a conserved core genome and a substantial accessory genome component, reflecting genomic differentiation relative to closely related taxa. Phenotypic and chemotaxonomic characteristics were consistent with assignment to the genus
Streptomyces
, while supporting its differentiation at the species level. Based on the combined genomic, phenotypic, and chemotaxonomic evidence, strain ZE1316R2Aᵀ represents a novel species of the genus
Streptomyces
, for which the name
Streptomyces zimensis
sp. nov., is proposed. This study expands current knowledge of
Streptomyces
diversity associated with saline environments and highlights the genomic diversity present within closely related taxa. The type strain is ZE1316R2Aᵀ (= CCMM B1331
T
= DSM 120541
T
).
E. Oubassou, Soukaina Oudchaira, V. Cognat et al.· Annals of Microbiology· 0 citations