The Family Gracilibacteraceae and Transfer of the Genus Lutispora into Gracilibacteraceae

Stackebrandt, Erko

doi:10.1007/978-3-642-30120-9_358

Cited by 7 publications

(2 citation statements)

References 11 publications

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“…In our study, Sulfurospirillum and Desulfovibrio responded to cellulose and chitin respectively. Lutispora thermophile , the only isolated species in genus Lustispora , does not utilize carbohydrates but peptone, tryptone, casamino acids etc., and uncultured Lutispora clones were widely found in methanogenic environments involved in cellulose degradation (Stackebrandt ). Sunxiuqinia spp.…”

Section: Discussionmentioning

confidence: 99%

The composition, localization and function of low-temperature-adapted microbial communities involved in methanogenic degradations of cellulose and chitin from Qinghai-Tibetan Plateau wetland soils

et al. 2016

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Aims: To reveal the microbial communities from Qinghai-Tibetan Plateau wetland soils that have the potential to be used in the utilization of cellulosic and chitinous biomass at low temperatures (≤25°C). Methods and Results: Soil samples collected from six wetlands on QinghaiTibetan Plateau were supplemented with or without cellulose and chitin flakes, and anaerobically incubated at 25 and 15°C; high-throughput 16S rRNA gene sequencing was used to access the composition and localization (in the slurry and on the surface) of enriched microbial communities; a hypothetical model was constructed to demonstrate the functional roles of involved microbes mainly at genus level. Overall, microbial communities from Qinghai-Tibetan Plateau wetlands showed significant potential to convert both cellulose and chitin to methane at low temperatures; Clostridium III, Clostridium XIVa, Paludibacter, Parcubacteria, Saccharofermentans, Pelotomaculum, Methanosaeta, Methanobrevibacter, Methanoregula, Methanospirillum and Methanosarcina participated in methanogenic degradation of both cellulose and chitin through the roles of hydrolytic, saccharolytic and secondary fermenters and methanogens respectively. Acetotrophic methanogens were mainly enriched in the slurries, while hydrogenotrophic methanogens could be both in the slurries and on the surface. Conclusions: The composition and localization of microbial communities that could effectively convert cellulose and chitin to methane at low temperatures have been revealed by high-throughput 16S rRNA gene sequencing methods, and reviewing the literatures on the microbial pure culture helped to elucidate functional roles of significantly enriched microbes. Significance and Impact of the Study: This study will contribute to the understanding of carbon and nitrogen cycling of cellulose and chitin in coldarea wetlands and provide fundamental information to obtain microbial resources for the utilization of biomass wastes at low temperatures.

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Section: Discussionmentioning

confidence: 99%

The composition, localization and function of low-temperature-adapted microbial communities involved in methanogenic degradations of cellulose and chitin from Qinghai-Tibetan Plateau wetland soils

et al. 2016

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“…Genera Gracilibacter , Desulfovibrio , and Christensenella were also included in the top five highest VIP scores important for discriminating samples and all were more abundant in colony foreguts. Gracilibacter is likely transient environmental bacteria based on its association with wetlands [ 90 ]. Desulfovibrio and Christensenella are common residents of the mammal gut [ 91 , 92 , 93 ], though Desulfovibrio is also associated with mud and water sediments, making it a possible environmental contaminant [ 94 ].…”

Section: Discussionmentioning

confidence: 99%

Conservation Implications of Shifting Gut Microbiomes in Captive-Reared Endangered Voles Intended for Reintroduction into the Wild

et al. 2018

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The Amargosa vole is a highly endangered rodent endemic to a small stretch of the Amargosa River basin in Inyo County, California. It specializes on a single, nutritionally marginal food source in nature. As part of a conservation effort to preserve the species, a captive breeding population was established to serve as an insurance colony and a source of individuals to release into the wild as restored habitat becomes available. The colony has successfully been maintained on commercial diets for multiple generations, but there are concerns that colony animals could lose gut microbes necessary to digest a wild diet. We analyzed feces from colony-reared and recently captured wild-born voles on various diets, and foregut contents from colony and wild voles. Unexpectedly, fecal microbial composition did not greatly differ despite drastically different diets and differences observed were mostly in low-abundance microbes. In contrast, colony vole foregut microbiomes were dominated by Allobaculum sp. while wild foreguts were dominated by Lactobacillus sp. If these bacterial community differences result in beneficial functional differences in digestion, then captive-reared Amargosa voles should be prepared prior to release into the wild to minimize or eliminate those differences to maximize their chance of success.

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G racilibacteraceae

Lee¹,

Wiegel²

2017

Bergey's Manual of Systematics of Archaea and Bacteria

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Gra.ci.li.bac.te.ra.ce'ae, N.L. masc. n. Gracilibacter type genus of the family; suff. ‐ aceae ending to denote a family; N.L. fem. pl. n. Gracilibacteraceae the family of Gracilibacter . Firmicutes / Clostridia / Clostridiales / Gracilibacteraceae Based on the phylogenetic positions, G. thermotolerans and L. thermophila are clustered together between Collins's Clostridium clusters I/II and III. Thus, the family Gracilibacteraceae herein is represented and described by both genera. Species of the family Gracilibacteraceae are obligatorily anaerobes that are thermotolerant or moderately thermophilic chemoorganotrophs that require yeast extract for growth. Cells are straight to curved rods and occur singly or form chains. All contain Gram‐positive wall structure, but stain Gram‐negative. Cells contain flagella and are motile. Type genus: Gracilibacter Lee, Romanek, Mills, Davis, Whitman and Wiegel 2006, 2092 VP .

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The Family Gracilibacteraceae and Transfer of the Genus Lutispora into Gracilibacteraceae

Cited by 7 publications

References 11 publications

The composition, localization and function of low-temperature-adapted microbial communities involved in methanogenic degradations of cellulose and chitin from Qinghai-Tibetan Plateau wetland soils

The composition, localization and function of low-temperature-adapted microbial communities involved in methanogenic degradations of cellulose and chitin from Qinghai-Tibetan Plateau wetland soils

Conservation Implications of Shifting Gut Microbiomes in Captive-Reared Endangered Voles Intended for Reintroduction into the Wild

G racilibacteraceae

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