Perspicuibacter marinus gen. nov., sp. nov., a semi-transparent bacterium isolated from surface seawater, and description of Arenicellaceae fam. nov. and Arenicellales ord. nov.

Teramoto, Maki; Yagyu, Ken-ichi; Nishijima, Miyuki

doi:10.1099/ijs.0.064683-0

Cited by 19 publications

(5 citation statements)

References 23 publications

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“…The presence of these microbial groups, especially Thiotrichales, supports the filamentous and web structures of F-stream observed through microscopy, similar to that previously described for water biofilms collected from other cave environments [54]. Arenicellales order has been recently defined [55] and mainly included marine bacteria, some of them isolated from deep-marine environments. While the present study on FC is the first study describing members of Arenicellales order being associated with a marine sulfidic cave microbiology, filamentous sulfur-oxidizing members of Thiotrichales (of Thiotrichaceae family) were found to dominate microbial communities of water biofilms collected from the sulfidic Frasassi Cave [52].…”

Section: Discussionsupporting

confidence: 81%

Geomicrobiology of a seawater-influenced active sulfuric acid cave

D’Angeli

Ghezzi

Leuko³

et al. 2019

PLoS ONE

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Fetida Cave is an active sulfuric acid cave influenced by seawater, showing abundant microbial communities that organize themselves under three main different morphologies: water filaments, vermiculations and moonmilk deposits. These biofilms/deposits have different cave distribution, pH, macro- and microelement and mineralogical composition, carbon and nitrogen content. In particular, water filaments and vermiculations had circumneutral and slightly acidic pH, respectively, both had abundant organic carbon and high microbial diversity. They were rich in macro- and microelements, deriving from mineral dissolution, and, in the case of water filaments, from seawater composition. Vermiculations had different color, partly associated with their mineralogy, and unusual minerals probably due to trapping capacities. Moonmilk was composed of gypsum, poor in organic matter, had an extremely low pH (0–1) and low microbial diversity. Based on 16S rRNA gene analysis, the microbial composition of the biofilms/deposits included autotrophic taxa associated with sulfur and nitrogen cycles and biomineralization processes. In particular, water filaments communities were characterized by bacterial taxa involved in sulfur oxidation and reduction in aquatic, aphotic, microaerophilic/anoxic environments (Campylobacterales, Thiotrichales, Arenicellales, Desulfobacterales, Desulforomonadales) and in chemolithotrophy in marine habitats (Oceanospirillales, Chromatiales). Their biodiversity was linked to the morphology of the water filaments and their collection site. Microbial communities within vermiculations were partly related to their color and showed high abundance of unclassified Betaproteobacteria and sulfur-oxidizing Hydrogenophilales (including Sulfuriferula ), and Acidiferrobacterales (including Sulfurifustis ), sulfur-reducing Desulfurellales, and ammonia-oxidizing Planctomycetes and Nitrospirae. The microbial community associated with gypsum moonmilk showed the strong dominance (>60%) of the archaeal genus Thermoplasma and lower abundance of chemolithotrophic Acidithiobacillus , metal-oxidizing Metallibacterium , Sulfobacillus , and Acidibacillus . This study describes the geomicrobiology of water filaments, vermiculations and gypsum moonmilk from Fetida Cave, providing insights into the microbial taxa that characterize each morphology and contribute to biogeochemical cycles and speleogenesis of this peculiar seawater-influenced sulfuric acid cave.

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Section: Discussionsupporting

confidence: 81%

Geomicrobiology of a seawater-influenced active sulfuric acid cave

D’Angeli

Ghezzi

Leuko³

et al. 2019

PLoS ONE

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“…In addition, several metabolically diverse lineages correlate significantly with nonlocal mixing (N a ). The metabolisms of these lineages include nitrification [e.g., Nitrospinae ( 45 ), Nitrosomonadales of Betaproteobacteria ( 46 )], aerobic methylotrophy [E01-9C-26 of Gammaproteobacteria ( 47 )], aerobic organotrophy [ Arenicella of Gammaproteobacteria ( 48 )], anaerobic organotrophy [ Bacteroidia of Bacteroidetes ( 49 )], and sulfate reduction [Sva0485 of Deltaproteobacteria ( 50 )].…”

Section: Discussionmentioning

confidence: 99%

Macrofaunal control of microbial community structure in continental margin sediments

Deng

Bölsterli

Kristensen

et al. 2020

Proc. Natl. Acad. Sci. U.S.A.

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Through a process called “bioturbation,” burrowing macrofauna have altered the seafloor habitat and modified global carbon cycling since the Cambrian. However, the impact of macrofauna on the community structure of microorganisms is poorly understood. Here, we show that microbial communities across bioturbated, but geochemically and sedimentologically divergent, continental margin sites are highly similar but differ clearly from those in nonbioturbated surface and underlying subsurface sediments. Solid- and solute-phase geochemical analyses combined with modeled bioturbation activities reveal that dissolved O2introduction by burrow ventilation is the major driver of archaeal community structure. By contrast, solid-phase reworking, which regulates the distribution of fresh, algal organic matter, is the main control of bacterial community structure. In nonbioturbated surface sediments and in subsurface sediments, bacterial and archaeal communities are more divergent between locations and appear mainly driven by site-specific differences in organic carbon sources.

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“…5F), and OTUs 1 and 19 were proportionally dominant on the transitionary and affected shell, respectively, though they were highly abundant in all 3 shell conditions (see Table S1). OTU 1 is most likely Perspicuibacter marinus (99% sequence identity), an aerobic marine bacterium recently isolated from surface seawater in Japan (Teramoto et al 2015). At this time, not much is known about this organism, but it has been cultured and therefore could be used in future studies exploring the dynamics of the transitionary lobster shell community.…”

Section: Discussionmentioning

confidence: 99%

Fine-scale transition to lower bacterial diversity and altered community composition precedes shell disease in laboratory-reared juvenile American lobster

Feinman¹,

Martínez²,

Bowen³

et al. 2017

Dis. Aquat. Org.

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The American lobster Homarus americanus supports a valuable commercial fishery in the Northeastern USA and Maritime Canada; however, stocks in the southern portion of the lobster's range have shown declines, in part due to the emergence of shell disease. Epizootic shell disease is a bacterially induced cuticular erosion that renders even mildly affected lobsters unmarketable because of their appearance, and in more severe cases can cause mortality. Despite the importance of this disease, the associated bacterial communities have not yet been fully characterized. We sampled 2 yr old, laboratory-reared lobsters that displayed signs of shell disease at the site of disease as well as at 0.5, 1, and 1.5 cm away from the site of disease to determine how the bacterial community changed over this fine spatial scale. Illumina sequencing of the 16S rRNA gene revealed a distinct bacterial community at the site of disease, with significant reductions in bacterial diversity and richness compared to more distant sampling locations. The bacterial community composition 0.5 cm from the site of disease was also altered, and there was an observable decrease in bacterial diversity and richness, even though there were no signs of disease at that location. Given the distinctiveness of the bacterial community at the site of disease and 0.5 cm from the site of disease, we refer to these communities as affected and transitionary, and suggest that these bacteria, including the previously proposed causative agent, Aquimarina 'homaria', are important for the initiation and progression of this laboratory model of shell disease.KEY WORDS: American lobster · Shell disease · Bacterial communities · Microbiome · High throughput sequencing · 16S rRNA gene Resale or republication not permitted without written consent of the publisherDis Aquat Org 124: [41][42][43][44][45][46][47][48][49][50][51][52][53][54] 2017 2005). Due to the physical severity of epizootic shell disease, even mildly affected lobsters are generally considered unmarketable due to the unappealing appearance of their shells, thus affecting the value of this important commercial fishery .In addition to aesthetic changes associated with epizootic shell disease, animals can also suffer from decreased health ) and increased mortality . Lobsters affected by shell disease are energetically compromised, with disruptions to their metabolism and hormone signaling (Tarrant et al. 2012). They also tend to have high levels of the molting hormone ecdysone, which can disrupt their reproductive cycle (Laufer et al. 2005). These physiological changes may in turn influence population dynamics, particularly since disease prevalence among egg-bearing females can be as high as 70% (Castro & Somers 2012). The recent decline in the southern New England American lobster population has been positively associated with an in crease in epizootic shell disease , Howell 2012, highlighting the importance of understanding the ecological dynamics of this disease.Despite the importance of epizootic ...

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Perspicuibacter marinus gen. nov., sp. nov., a semi-transparent bacterium isolated from surface seawater, and description of Arenicellaceae fam. nov. and Arenicellales ord. nov.

Cited by 19 publications

References 23 publications

Geomicrobiology of a seawater-influenced active sulfuric acid cave

Geomicrobiology of a seawater-influenced active sulfuric acid cave

Macrofaunal control of microbial community structure in continental margin sediments

Fine-scale transition to lower bacterial diversity and altered community composition precedes shell disease in laboratory-reared juvenile American lobster

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