Three novel species of the genus Flavobacterium, Flavobacterium odoriferum sp. nov., Flavobacterium fragile sp. nov. and Flavobacterium luminosum sp. nov., isolated from activated sludge

Ran, Qi; Du, Xinran; Han, Lin; Wang, Jingjing; Li, Yue-zhong

doi:10.1099/ijsem.0.006258

Cited by 2 publications

(1 citation statement)

References 37 publications

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“…Pairwise comparisons of LB-N7 T genome with these type strains revealed digital DNA–DNA hybridization (dDDH) values below the species delineation threshold of 70 % [ 21 ], suggesting that LB-N7 T represents a new species. The highest dDDH value observed was 23.3 %, recorded with Flavobacterium odoriferum HXWNR29 T (GCA_025499515) [ 22 ], and 22.6 % with Flavobacterium celericrescens TWA-26 T (GCA_011392075) [ 23 ], Flavobacterium cheniae DSM 22462 T (GCA_004363695) [ 24 ] and Flavobacterium lacisediminis TH16-21 T (GCA_025909975) [ 25 ].…”

Section: Genome Analysis Phylogeny and Featuresmentioning

confidence: 99%

Flavobacterium psychraquaticum sp. nov., isolated from water system of Atlantic salmon (Salmo salar) smolts cultured in Chile

Avendaño-Herrera,

Saldarriga-Córdoba,

Poblete-Morales

et al. 2024

International Journal of Systematic and Evolutionary Microbiology

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Strain LB-N7T, a novel Gram-negative, orange, translucent, gliding, rod-shaped bacterium, was isolated from water samples collected from an open system of Atlantic salmon (Salmo salar) smolts in a fish farm in Chile during a flavobacterial infection outbreak in 2015. Phylogenetic analysis based on 16S rRNA sequences (1337 bp) revealed that strain LB-N7T belongs to the genus Flavobacterium and is closely related to the type strains Flavobacterium ardleyense A2-1T (98.8 %) and Flavobacterium cucumis R2A45-3T (96.75 %). The genome size of strain LB-N7T was 2.93 Mb with a DNA G+C content 32.6 mol%. Genome comparisons grouped strain LB-N7T with Flavobacterium cheniae NJ-26T, Flavobacterium odoriferum HXWNR29T, Flavobacterium lacisediminis TH16-21T and Flavobacterium celericrescens TWA-26T. The calculated digital DNA–DNA hybridization values between strain LB-N7T and the closest related Flavobacterium strains were 23.3 % and the average nucleotide identity values ranged from 71.52 to 79.39 %. Menaquinone MK-6 was the predominant respiratory quinone, followed by MK-7. The major fatty acids were iso-C15 : 0 and anteiso-C15 : 0. The primary polar lipids detected included nine unidentified lipids, two amounts of aminopospholipid and phospholipids, and a smaller amount of aminolipid. Phenotypic, genomic, and chemotaxonomic data suggest that strain LB-N7T (=CECT 30406T=RGM 3221T) represents as a novel bacterial species, for which the name Flavobacterium psychraquaticum sp. nov. is proposed.

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Section: Genome Analysis Phylogeny and Featuresmentioning

confidence: 99%

Flavobacterium psychraquaticum sp. nov., isolated from water system of Atlantic salmon (Salmo salar) smolts cultured in Chile

Avendaño-Herrera,

Saldarriga-Córdoba,

Poblete-Morales

et al. 2024

International Journal of Systematic and Evolutionary Microbiology

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Gilvirhabdus luticola gen. nov., sp. nov., a mesophilic and halophilic bacterium isolated from tidal flat sediment

Jayan,

Kim,

Srinivasan

et al. 2024

International Journal of Systematic and Evolutionary Microbiology

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Two novel bacteria, MJ-SS3T and MJ-SS4, were isolated from tidal flat sediment sampled in Gochang, Republic of Korea. The isolates were Gram-stain-negative, aerobic, non-motile, rod-shaped, yellow-coloured, oxidase-positive, and catalase-positive. Strains MJ-SS3T and MJ-SS4 grew at 20–37 °C (optimum, 30 °C), at pH 6–8 (optimum, pH 7.0) and in the presence of 0–7 % (w/v) NaCl (optimum, 2.0 % NaCl). Strains MJ-SS3T and MJ-SS4 showed 99.9 % 16S rRNA gene sequence similarity. Phylogenetic analysis based on genome and 16S rRNA gene sequences indicated that strains MJ-SS3T and MJ-SS4 were affiliated with the family Flavobacteriaceae and most closely related to Formosa maritima 1494T (95.3 %), Hanstruepera flava NBU2984T (95.2 %), Yeosuana marina JLT21T (95.2 %), Meridianimaribacter flavus NH57NT (95.1 %), and Geojedonia litorea YCS-16T (95.1 %). The major respiratory quinone was menaquinone-6. The major identified polar lipids were phosphatidylethanolamine, phosphatidylglycerol, phosphatidylcholine, and amino lipids. The major cellular fatty acids of strain MJ-SS3T were iso-C15 : 1 G (24.6 %), iso-C15 : 0 (21.6 %), and iso-C17 : 0 3-OH (15.8 %). The genome length of strain MJ-SS3T is 3.1 Mbp (DNA G+C content, 32.5 mol%) and it has 2822 coding and 59 tRNA genes. The average amino acid identity and average nucleotide identity values, as well as biochemical, phylogenetic, and physiological characteristics, strongly supported the genotypic and phenotypic differentiation of strains MJ-SS3T and MJ-SS4 from other members of the family Flavobacteriaceae. Hence, strains MJ-SS3T and MJ-SS4 are considered to represent a novel species of a new genus in the family Flavobacteriaceae, for which the Gilvirhabdus luticola gen. nov., sp. nov. is proposed. The type strain is MJ-SS3T (=KCTC 102114T=KEMB 20189T=JCM 36595T), with reference strain MJ-SS4 (=KCTC 102115=KEMB 20190).

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Three novel species of the genus Flavobacterium, Flavobacterium odoriferum sp. nov., Flavobacterium fragile sp. nov. and Flavobacterium luminosum sp. nov., isolated from activated sludge

Cited by 2 publications

References 37 publications

Flavobacterium psychraquaticum sp. nov., isolated from water system of Atlantic salmon (Salmo salar) smolts cultured in Chile

Flavobacterium psychraquaticum sp. nov., isolated from water system of Atlantic salmon (Salmo salar) smolts cultured in Chile

Gilvirhabdus luticola gen. nov., sp. nov., a mesophilic and halophilic bacterium isolated from tidal flat sediment

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