Labilibaculum antarcticum sp. nov., a novel facultative anaerobic, psychrotorelant bacterium isolated from marine sediment of Antarctica

Watanabe, Miho; Kojima, Hisaya; Fukui, Manabu

doi:10.1007/s10482-019-01345-w

Cited by 12 publications

(6 citation statements)

References 24 publications

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“…Those logos were then aligned manually using the secondary structure elements as a guide. The residues are colored according to the chemical characteristics of the residues, as indicated in the legend present in anoxic coastal sediments and in anoxic waters of salt marshes and the Black Sea [36][37][38][39][40]. Aquimarina is a genus containing aquatic bacteria widely observed in salty waters [41].…”

Section: Bacterial Avidins In Aquatic Environmentsmentioning

confidence: 99%

Bacterial avidins are a widely distributed protein family in Actinobacteria, Proteobacteria and Bacteroidetes

et al. 2021

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Background Avidins are biotin-binding proteins commonly found in the vertebrate eggs. In addition to streptavidin from Streptomyces avidinii, a growing number of avidins have been characterized from divergent bacterial species. However, a systematic research concerning their taxonomy and ecological role has never been done. We performed a search for avidin encoding genes among bacteria using available databases and classified potential avidins according to taxonomy and the ecological niches utilized by host bacteria. Results Numerous avidin-encoding genes were found in the phyla Actinobacteria and Proteobacteria. The diversity of protein sequences was high and several new variants of genes encoding biotin-binding avidins were found. The living strategies of bacteria hosting avidin encoding genes fall mainly into two categories. Human and animal pathogens were overrepresented among the found bacteria carrying avidin genes. The other widespread category were bacteria that either fix nitrogen or live in root nodules/rhizospheres of plants hosting nitrogen-fixing bacteria. Conclusions Bacterial avidins are a taxonomically and ecologically diverse group mainly found in Actinobacteria, Proteobacteria and Bacteroidetes, associated often with plant invasiveness. Avidin encoding genes in plasmids hint that avidins may be horizontally transferred. The current survey may be used as a basis in attempts to understand the ecological significance of biotin-binding capacity.

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Section: Bacterial Avidins In Aquatic Environmentsmentioning

confidence: 99%

Bacterial avidins are a widely distributed protein family in Actinobacteria, Proteobacteria and Bacteroidetes

et al. 2021

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“…Whether and how this bacterial group plays a role in the depolymerization, degradation, and transformation of macromolecular OM remain uncertain. To date, only a few bacteria of this family have been isolated ( 33 ), such as Labilibaculum manganireducens ( 34 ), Ancylomarina subtilis ( 35 ), and Marinifilum albidiflavum ( 36 ), but these are distantly related to the ones in our in situ cultures. In this study, we analyzed the genetic diversity, global distribution, environmental adaptation, and metabolism of MF via phylogenetic, metagenomic, and metatranscriptomic analyses.…”

Section: Introductionmentioning

confidence: 99%

Frequent Occurrence and Metabolic Versatility of Marinifilaceae Bacteria as Key Players in Organic Matter Mineralization in Global Deep Seas

Dong

Lai

et al. 2022

mSystems

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“…Whether and how this bacterial group plays a role in the depolymerization, degradation, and transformation of macromolecular organic matter remains uncertain. To date, only a few bacteria of this family have been isolated (34), such as Labilibaculum manganireducens (35), Ancylomarina subtilis (36), and Marinifilum albidiflavum (37), but distantly related to the ones in our in situ cultures. In this study, we analysed the genetic diversity, global distribution, environmental adaptation, and metabolic metabolism of MF via phylogenetic, metagenomic, and metatranscriptomic analyses.…”

Section: Introductionmentioning

confidence: 99%

The frequent occurrence and metabolic versatility of Marinifilaceae bacteria involved in organic matter mineralization as a key member in global deep sea

Dong

Lai

et al. 2022

Preprint

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Transfer of animal and plant detritus of both terrestrial and marine origins to the deep sea occurs on the global scale. Microorganisms play an important role in mineralizing them therein, yet to identify in situ. Here we report the family Marinifilaceae that occurred as one of the most predominant bacteria thriving on the new inputs of plant and animal biomasses in both marginal and oceanic areas observed via in situ incubation about their differentiation, environmental adaption, and metabolic mechanisms underlying their prevalence in organic matter mineralizing communities. We described the metabolic features and in situ metabolizing activities of different subgroups (tentative genus level), based on the metagenomic and metatranscriptomic data. One representative subgroup MF-2 dominated plant detritus-enriched cultures and specialized in polysaccharide degradation by encoding many hydrolases involved in the hydrolysis of hemicellulose, pectin, starch, cellulose, and polysaccharides containing N-acetyl groups; this subgroup also encodes a manganese superoxide dismutase with the potential of lignin oxidation and possesses complete nitrogen fixation pathway to compensate for the shortage of nitrogen sources inside the plant detritus. In contrast, those dominating the animal tissue-supported microbiomes were more diverse and formed three subgroups, which distinguished themselves from MF-2 in carbon and nitrogen metabolisms. Regardless of differentiation in carbon and nitrogen metabolisms, they share in common in energy conservation through organic fermentation, and anaerobic respiration of diverse electron receptors. These results highlight the role of Marinifilaceae bacteria neglected before in organic matter mineralizing in marine environments coupling carbon and nitrogen cycling with metals and other elements.

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Labilibaculum antarcticum sp. nov., a novel facultative anaerobic, psychrotorelant bacterium isolated from marine sediment of Antarctica

Cited by 12 publications

References 24 publications

Bacterial avidins are a widely distributed protein family in Actinobacteria, Proteobacteria and Bacteroidetes

Bacterial avidins are a widely distributed protein family in Actinobacteria, Proteobacteria and Bacteroidetes

Frequent Occurrence and Metabolic Versatility of Marinifilaceae Bacteria as Key Players in Organic Matter Mineralization in Global Deep Seas

The frequent occurrence and metabolic versatility of Marinifilaceae bacteria involved in organic matter mineralization as a key member in global deep sea

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