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Journal articles on the topic '<i>Methanosphaera stadtmanae</i>'

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Published: 4 June 2021

Last updated: 1 February 2022

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1

Dridi, Bédis, Saber Khelaifia, Marie-Laure Fardeau, Bernard Ollivier, and Michel Drancourt. "Tungsten-enhanced growth of Methanosphaera stadtmanae." BMC Research Notes 5, no. 1 (2012): 238. http://dx.doi.org/10.1186/1756-0500-5-238.

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2

Lin, Zhaosheng, and Richard Sparling. "Investigation of serine hydroxymethyltransferase in methanogens." Canadian Journal of Microbiology 44, no. 7 (1998): 652–56. http://dx.doi.org/10.1139/w98-050.

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The cofactor specificity of serine hydroxymethyltransferase (SHMT) activities was tested in extracts of several methanogens using tetrahydromethanopterin (H4MPt) from Methanobacterium thermoautotrophicum Marburg, tetrahydrosarcinapterin (H4SPt) from Methanosarcina barkeri, and tetrahydrofolate (H4folate) as the potential C1 carrier. In Methanosphaera stadtmanae and Methanococcus thermolithotrophicus, the activities were H4MPt dependent. In Methanospirillum hungatei GP1, Methanosaeta concilii, Methanolobus tindarius, and Methanosarcina barkeri Fusaro, the activities were strictly H4folate depen

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3

Jones, William J., and Gunther U. Holzer. "The Polar and Neutral Lipid Composition of Methanosphaera stadtmanae." Systematic and Applied Microbiology 14, no. 2 (1991): 130–34. http://dx.doi.org/10.1016/s0723-2020(11)80290-0.

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4

Blais Lecours, Pascale, David Marsolais, Yvon Cormier, et al. "Increased Prevalence of Methanosphaera stadtmanae in Inflammatory Bowel Diseases." PLoS ONE 9, no. 2 (2014): e87734. http://dx.doi.org/10.1371/journal.pone.0087734.

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5

Sparling, Richard, Laurel Thorlacius Holth, and Zhaosheng Lin. "Sodium ion dependent active transport of leucine in Methanosphaera stadtmanae." Canadian Journal of Microbiology 39, no. 8 (1993): 749–53. http://dx.doi.org/10.1139/m93-110.

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A Na+-dependent active transport system for leucine has been observed in Methanosphaera stadtmanae. The Km for leucine as determined was 20 μM with a Vmax of 3.2 nmol∙min−1∙mg protein−1. A minimum of 5 mM Na+ was required for optimal uptake rates. After correction for unspecific binding and incorporation into trichloroacetic acid precipitable materials, [14C]leucine was accumulated inside the cell to concentrations > 100 times higher than in the medium. The uptake of leucine into active cells was inhibited by the protonophore 3,3′,4′5-tetrachlorosalicylanilide but stimulated by the syntheti

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6

Sparling, Richard, Michael Blaut, and Gerhard Gottschalk. "Bioenergetic studies of Methanosphaera stadtmanae, an obligate H2–methanol utilising methanogen." Canadian Journal of Microbiology 39, no. 8 (1993): 742–48. http://dx.doi.org/10.1139/m93-109.

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In Methanosphaera stadtmanae producing methane from the reduction of methanol with H2, sodium (> 0.3 mM Na+) was not required for methanogenesis or ATP synthesis. The ATPase inhibitor N,N′-dicyclohexylcarbodiimide inhibited both ATP synthesis and methanogenesis, but was only effective in the presence of low Na+ (< 1 mM). The observed N,N′ -dicyclohexylcarbodiimide inhibition of methanogenesis was relieved by the addition of the protonophore 3,3′,4′,5-tetrachlorosalicylanilide. 3,3′,4′,5-Tetrachlorosalicylanilide itself caused a rapid decrease in the intracellular ATP concentration and st

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7

Fricke, Wolfgang F., Henning Seedorf, Anke Henne, et al. "The Genome Sequence of Methanosphaera stadtmanae Reveals Why This Human Intestinal Archaeon Is Restricted to Methanol and H2 for Methane Formation and ATP Synthesis." Journal of Bacteriology 188, no. 2 (2006): 642–58. http://dx.doi.org/10.1128/jb.188.2.642-658.2006.

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ABSTRACT Methanosphaera stadtmanae has the most restricted energy metabolism of all methanogenic archaea. This human intestinal inhabitant can generate methane only by reduction of methanol with H2 and is dependent on acetate as a carbon source. We report here the genome sequence of M. stadtmanae, which was found to be composed of 1,767,403 bp with an average G+C content of 28% and to harbor only 1,534 protein-encoding sequences (CDS). The genome lacks 37 CDS present in the genomes of all other methanogens. Among these are the CDS for synthesis of molybdopterin and for synthesis of the carbon

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8

Bang, Corinna, Katrin Weidenbach, Thomas Gutsmann, Holger Heine, and Ruth A. Schmitz. "The Intestinal Archaea Methanosphaera stadtmanae and Methanobrevibacter smithii Activate Human Dendritic Cells." PLoS ONE 9, no. 6 (2014): e99411. http://dx.doi.org/10.1371/journal.pone.0099411.

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9

Nakamura, Kohei, Takeshi Terada, Yuji Sekiguchi, et al. "Application of Pseudomurein Endoisopeptidase to Fluorescence In Situ Hybridization of Methanogens within the Family Methanobacteriaceae." Applied and Environmental Microbiology 72, no. 11 (2006): 6907–13. http://dx.doi.org/10.1128/aem.01499-06.

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ABSTRACT In situ detection of methanogens within the family Methanobacteriaceae is sometimes known to be unsuccessful due to the difficulty in permeability of oligonucleotide probes. Pseudomurein endoisopeptidase (Pei), a lytic enzyme that specifically acts on their cell walls, was applied prior to 16S rRNA-targeting fluorescence in situ hybridization (FISH). For this purpose, pure cultured methanogens within this family, Methanobacterium bryantii, Methanobrevibacter ruminantium, Methanosphaera stadtmanae, and Methanothermobacter thermautotrophicus together with a Methanothermobacter thermauto

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10

Yu, Zhongtang, Rubén García-González, Floyd L. Schanbacher, and Mark Morrison. "Evaluations of Different Hypervariable Regions of Archaeal 16S rRNA Genes in Profiling of Methanogens by Archaea-Specific PCR and Denaturing Gradient Gel Electrophoresis." Applied and Environmental Microbiology 74, no. 3 (2007): 889–93. http://dx.doi.org/10.1128/aem.00684-07.

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ABSTRACT Different hypervariable (V) regions of the archaeal 16S rRNA gene (rrs) were compared systematically to establish a preferred V region(s) for use in Archaea-specific PCR-denaturing gradient gel electrophoresis (DGGE). The PCR products of the V3 region produced the most informative DGGE profiles and permitted identification of common methanogens from rumen samples from sheep. This study also showed that different methanogens might be detected when different V regions are targeted by PCR-DGGE. Dietary fat appeared to transiently stimulate Methanosphaera stadtmanae but inhibit Methanobre

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11

Elias, Dwayne A., David F. Juck, Karin A. Berry, and Richard Sparling. "Purification of the NADP+: F420oxidoreductase ofMethanosphaera stadtmanae." Canadian Journal of Microbiology 46, no. 11 (2000): 998–1003. http://dx.doi.org/10.1139/w00-090.

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Methanosphaera stadtmanae (DSM 3091) is a methanogen that requires H2and CH3OH for methanogenesis. The organism does not possess an F420-dependent hydrogenase and only low levels of F420. It does however possess NADP+:F420oxidoreductase activity. The NADP+:F420oxidoreductase, the enzyme which catalyses the electron transfer between NADP+and F420in this organism, was purified and characterized. NAD+, NADH, FMN, and FAD could not be used as electron acceptors. Optimal pH for F420reduction was 6.0, and 8.5 for NADP+reduction. During the purification process, it was noted that precipitation with (

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12

Bank, Shelton, Bin Yan, and Terry L. Miller. "Solid 13C CPMAS NMR spectroscopy studies of biosynthesis in whole cells of Methanosphaera stadtmanae." Solid State Nuclear Magnetic Resonance 7, no. 3 (1996): 253–61. http://dx.doi.org/10.1016/s0926-2040(96)01261-1.

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13

Bernatchez, Emilie, Matthew J. Gold, Anick Langlois, et al. "Methanosphaera stadtmanae induces a type IV hypersensitivity response in a mouse model of airway inflammation." Physiological Reports 5, no. 7 (2017): e13163. http://dx.doi.org/10.14814/phy2.13163.

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14

Elias, Dwayne A., David F. Juck, Karin A. Berry, and Richard Sparling. "Purification of the NADP⁺: F₄₂₀ oxidoreductase of Methanosphaera stadtmanae." Canadian Journal of Microbiology 46, no. 11 (2000): 998–1003. http://dx.doi.org/10.1139/cjm-46-11-998.

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15

Lin, Z., and R. Sparling. "Oxidation–reduction of methanol, formaldehyde, serine, and formate in Methanosphaera stadtmanae using 14C short- and long-term labelling." Canadian Journal of Microbiology 41, no. 11 (1995): 1048–53. http://dx.doi.org/10.1139/m95-146.

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Methanosphaera stadtmanae derives its energy from the reduction by H2 of CH3OH, but not CO2, indicating there is a block in the CO2 methanogenesis pathway. Both 14CH4 and 14CO2 production were detected in whole cells using [14C]formaldehyde or [14C]serine as substrate. 14CO2 was also observed from [14C]formate in both whole cells and cofactor-depleted cell-free extracts, and NADP-dependent formate dehydrogenase activity was detected. Both formate and serine blocked the formation of 14CO2 from formaldehyde in whole cells. The results confirmed that enzymes involved in the reduction of carbon fr

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16

Stevens, Kathryn M., Jacob B. Swadling, Antoine Hocher, et al. "Histone variants in archaea and the evolution of combinatorial chromatin complexity." Proceedings of the National Academy of Sciences 117, no. 52 (2020): 33384–95. http://dx.doi.org/10.1073/pnas.2007056117.

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Nucleosomes in eukaryotes act as platforms for the dynamic integration of epigenetic information. Posttranslational modifications are reversibly added or removed and core histones exchanged for paralogous variants, in concert with changing demands on transcription and genome accessibility. Histones are also common in archaea. Their role in genome regulation, however, and the capacity of individual paralogs to assemble into histone–DNA complexes with distinct properties remain poorly understood. Here, we combine structural modeling with phylogenetic analysis to shed light on archaeal histone pa

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17

Dridi, Bédis, Mireille Henry, Amel El Khéchine, Didier Raoult, and Michel Drancourt. "High Prevalence of Methanobrevibacter smithii and Methanosphaera stadtmanae Detected in the Human Gut Using an Improved DNA Detection Protocol." PLoS ONE 4, no. 9 (2009): e7063. http://dx.doi.org/10.1371/journal.pone.0007063.

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18

SINGH, KRISHNA M., PARESH R. PANDYA, SUBHASH PARNERKAR, et al. "Methanogenic Diversity Studies within the Rumen of Surti buffaloes Based on Methyl Coenzyme M Reductase A (mcrA) Genes Point to Methanobacteriales." Polish Journal of Microbiology 59, no. 3 (2010): 175–78. http://dx.doi.org/10.33073/pjm-2010-027.

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Methane emissions from ruminant livestock are considered to be one of the more potent forms of greenhouse gases contributing to global warming. Many strategies to reduce emissions are targeting the methanogens that inhabit the rumen, but such an approach can only be successful if it targets all the major groups of ruminant methanogens. Therefore, basic knowledge of the diversity of these microbes in breeds of buffalo is required. Therefore, the methanogenic community in the rumen of Surti buffaloes was analyzed by PCR amplification, cloning, and sequencing of methyl coenzyme M reductase (mcrA)

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19

Nehmï¿½, Benjamin, Yan Gilbert, Valï¿½rie Lï¿½tourneau, et al. "Culture-Independent Characterization of Archaeal Biodiversity in Swine Confinement Building Bioaerosols." Applied and Environmental Microbiology 75, no. 17 (2009): 5445–50. http://dx.doi.org/10.1128/aem.00726-09.

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ABSTRACT It was previously demonstrated that microbial communities of pig manure were composed of both bacteria and archaea. Recent studies have shown that bacteria are aerosolized from pig manure, but none have ever focused on the airborne archaeal burden. We sought here to develop and apply molecular ecology approaches to thoroughly characterize airborne archaea from swine confinement buildings (SCBs). Eight swine operations were visited, twice in winter and once during summer. Institute of Occupational Medicine cassettes loaded with 25-mm gelatin filters were used to capture the inhalable m

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20

Ohene-Adjei, Samuel, Ronald M. Teather, Michael Ivan, and Robert J. Forster. "Postinoculation Protozoan Establishment and Association Patterns of Methanogenic Archaea in the Ovine Rumen." Applied and Environmental Microbiology 73, no. 14 (2007): 4609–18. http://dx.doi.org/10.1128/aem.02687-06.

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ABSTRACT Association patterns between archaea and rumen protozoa were evaluated by analyzing archaeal 16S rRNA gene clone libraries from ovine rumen inoculated with different protozoa. Five protozoan inoculation treatments, fauna free (negative control), holotrich and cellulolytic protozoa, Isotricha and Dasytricha spp., Entodinium spp., and total fauna (type A) were tested. We used denaturing gradient gel electrophoresis, quantitative PCR, and phylogenetic analysis to evaluate the impact of the protozoan inoculants on the respective archaeal communities. Protozoan 18S ribosomal DNA clone libr

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21

Zhou, Mi, Emma Hernandez-Sanabria, and Le Luo Guan. "Assessment of the Microbial Ecology of Ruminal Methanogens in Cattle with Different Feed Efficiencies." Applied and Environmental Microbiology 75, no. 20 (2009): 6524–33. http://dx.doi.org/10.1128/aem.02815-08.

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ABSTRACT Cattle with high feed efficiencies (designated “efficient”) produce less methane gas than those with low feed efficiencies (designated “inefficient”); however, the role of the methane producers in such difference is unknown. This study investigated whether the structures and populations of methanogens in the rumen were associated with differences in cattle feed efficiencies by using culture-independent methods. Two 16S rRNA libraries were constructed using ∼800-bp amplicons generated from pooled total DNA isolated from efficient (n = 29) and inefficient (n = 29) animals. Sequence anal

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22

Attwood, G. T., W. J. Kelly, E. H. Altermann, and S. C. Leahy. "Analysis of the Methanobrevibacter ruminantium draft genome: understanding methanogen biology to inhibit their action in the rumen." Australian Journal of Experimental Agriculture 48, no. 2 (2008): 83. http://dx.doi.org/10.1071/ea07269.

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Methane is produced in the foregut (rumen) of ruminants by methanogens, which act as terminal reducers of carbon in the rumen system. The multistep methanogenesis pathway is well elucidated, mainly from the study of non-rumen methanogens, but the adaptations that allow methanogens to grow and persist in the rumen are not well understood. The Pastoral Greenhouse Gas Research Consortium is sequencing the genome of Methanobrevibacter ruminantium, a prominent methanogen in New Zealand ruminants, as part of a project to mitigate greenhouse gases. The genome is ~3.0 Mb in size with a guanine–cytosin

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23

Miller, T. L., X. Chen, B. Yan, and S. Bank. "Solution (sup13)C Nuclear Magnetic Resonance Spectroscopic Analysis of the Amino Acids of Methanosphaera stadtmanae: Biosynthesis and Origin of One-Carbon Units from Acetate and Carbon Dioxide." Applied and environmental microbiology 61, no. 4 (1995): 1180–86. http://dx.doi.org/10.1128/aem.61.4.1180-1186.1995.

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24

Holman, Devin B., Bushansingh Baurhoo, and Martin R. Chénier. "Temporal analysis of the effect of extruded flaxseed on the swine gut microbiota." Canadian Journal of Microbiology 60, no. 10 (2014): 649–59. http://dx.doi.org/10.1139/cjm-2014-0317.

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Flaxseed is a rich source of α-linolenic acid, an essential ω-3 fatty acid reported to have beneficial health effects in humans. Feeding swine a diet supplemented with flaxseed has been found to enrich pork products with ω-3 fatty acids. However, the effect of flaxseed supplementation on the swine gut microbiota has not been assessed to date. The purpose of this study was to investigate if extruded flaxseed has any impact on the bacterial and archaeal microbiota in the feces of growing–finishing pigs over a 51-day period, using denaturing gradient gel electrophoresis (DGGE) and real-time PCR.

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25

Miller, Terry L., and Meyer J. Wolin. "Methanosphaera stadtmaniae gen. nov., sp. nov.: a species that forms methane by reducing methanol with hydrogen." Archives of Microbiology 141, no. 2 (1985): 116–22. http://dx.doi.org/10.1007/bf00423270.

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26

Cook, S. R., P. K. Maiti, A. V. Chaves, C. Benchaar, K. A. Beauchemin, and T. A. McAllister. "Avian (IgY) anti-methanogen antibodies for reducing ruminal methane production: in vitro assessment of their effects." Australian Journal of Experimental Agriculture 48, no. 2 (2008): 260. http://dx.doi.org/10.1071/ea07249.

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In vitro dry matter disappearance (IVDMD) and production of methane, volatile fatty acids (VFA) and ammonia from an early lactation diet or from freeze-dried alfalfa were assessed in the presence of anti-methanogen antibody treatments in two in vitro ruminal incubations (experiments 1 and 2). In experiment 1, hens were immunised with crude cell preparations of Methanobrevibacter smithii, Methanobrevibacter ruminantium or Methanosphaera stadtmanae and complete Freund’s adjuvant (CFA). Semipurified egg antibodies (IgY) prepared from the hens’ eggs (α-SMICFA, α-RUMCFA, or α-STADCFA, respectively)

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27

Sprott, G. Dennis, Jean-Robert Brisson, Chantal J. Dicaire, et al. "A structural comparison of the total polar lipids from the human archaea Methanobrevibacter smithii and Methanosphaera stadtmanae and its relevance to the adjuvant activities of their liposomes11Publication number 42395 of the National Research Council of Canada." Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids 1440, no. 2-3 (1999): 275–88. http://dx.doi.org/10.1016/s1388-1981(99)00130-4.

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28

Dridi, Bédis, Marie-Laure Fardeau, Bernard Ollivier, Didier Raoult, and Michel Drancourt. "Methanomassiliicoccus luminyensis gen. nov., sp. nov., a methanogenic archaeon isolated from human faeces." International Journal of Systematic and Evolutionary Microbiology 62, Pt_8 (2012): 1902–7. http://dx.doi.org/10.1099/ijs.0.033712-0.

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During attempts to obtain novel, human-associated species of the domain Archaea , a coccoid micro-organism, designated strain B10T, was isolated in pure culture from a sample of human faeces collected in Marseille, France. On the basis of its phenotypic characteristics and 16S rRNA and mcrA gene sequences, the novel strain was classified as a methanogenic archaeon. Cells of the strain were non-motile, Gram-staining-positive cocci that were approximately 850 nm in diameter and showed autofluorescence at 420 nm. Cells were lysed by 0.1 % (w/v) SDS. With hydrogen as the electron donor, strain B10

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29

Wijngaard, W. M. H., J. Creemers, G. D. Vogels, and C. Drift. "Methanogenic pathways inMethanosphaera stadtmanae." FEMS Microbiology Letters 80, no. 2-3 (1991): 207–11. http://dx.doi.org/10.1111/j.1574-6968.1991.tb04662.x.

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30

Dong, Lifeng, Tingting Zhang, and Qiyu Diao. "Effect of Dietary Supplementation of Moringa Oleifera on the Production Performance and Fecal Methanogenic Community of Lactating Dairy Cows." Animals 9, no. 5 (2019): 262. http://dx.doi.org/10.3390/ani9050262.

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Development of alternative forage resources is of great importance to provide necessary nutrients and minimize greenhouse gas emissions in ruminant production. The aim of this study was to examine the effects of dietary supplementation of Moringa oleifera on the production performance and fecal methanogenic community in dairy cows using methyl-coenzyme M reductase α-subunit gene. Sixty-four cows were allocated to one of four treatments: basal diet without M. oleifera (control) or low (3% w/w, M3), medium (6%, M6), or high (9%, M9) supplementation with M. oleifera. This study demonstrated that

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31

Biavati, B., M. Vasta, and J. G. Ferry. "Isolation and characterization of "Methanosphaera cuniculi" sp. nov." Applied and Environmental Microbiology 54, no. 3 (1988): 768–71. http://dx.doi.org/10.1128/aem.54.3.768-771.1988.

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32

Wong, Denny, Zhaosheng Lin, David F. Juck, Karin A. Terrick, and Richard Sparling. "Electron transfer reactions for the reduction of NADP+inMethanosphaera stadtmanae." FEMS Microbiology Letters 120, no. 3 (1994): 285–90. http://dx.doi.org/10.1111/j.1574-6968.1994.tb07047.x.

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33

Bang, C., A. Schilhabel, K. Weidenbach, et al. "Effects of Antimicrobial Peptides on Methanogenic Archaea." Antimicrobial Agents and Chemotherapy 56, no. 8 (2012): 4123–30. http://dx.doi.org/10.1128/aac.00661-12.

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ABSTRACTAs members of the indigenous human microbiota found on several mucosal tissues,Methanobrevibacter smithiiandMethanosphaera stadtmanaeare exposed to the effects of antimicrobial peptides (AMPs) secreted by these epithelia. Although antimicrobial and molecular effects of AMPs on bacteria are well described, data for archaea are not available yet. Besides, it is not clear whether AMPs affect them as the archaeal cell envelope differs profoundly in terms of chemical composition and structure from that of bacteria. The effects of different synthetic AMPs on growth ofM. smithii,M. stadtmanae

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34

Horz, H. P., and G. Conrads. "The Discussion Goes on: What Is the Role ofEuryarchaeotain Humans?" Archaea 2010 (2010): 1–8. http://dx.doi.org/10.1155/2010/967271.

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The human body (primarily the intestinal tract, the oral cavity, and the skin) harbours approximately 1,000 different bacterial species. However, the number of archaeal species known to colonize man seems to be confined to a handful of organisms within the classEuryarchaeota(includingMethanobrevibacter smithii,M. oralis, andMethanosphaera stadtmanae). In contrast to this conspicuously low diversity ofArchaeain humans their unique physiology in conjunction with the growing number of reports regarding their occurrence at sites of infection has made this issue an emerging field of study. While pr

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35

Jordaan, Elsie M., David B. Levin, Richard Sparling, Ehsan Khafipour, and Nazim Çiçek. "Microbial Population Change in Anaerobic Digestion during Copper Sulfate Inhibition and Recovery." Transactions of the ASABE 62, no. 5 (2019): 1231–41. http://dx.doi.org/10.13031/trans.13462.

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Abstract. This study evaluated how feedstock with added copper sulfate (commonly used as an antimicrobial footbath solution in livestock operations) changed the performance and microbial populations of a dairy manure digester. High-throughput Illumina sequencing of the V4 region of the bacterial and the V6-V8 regions of the archaeal 16S rRNA gene in digester samples showed a significant change in the microbial community composition during addition of feedstock with copper sulfate, followed by a return to the original composition with regular feedstock. Bacterial genera that were suppressed dur

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Luo, Yu-heng, Yong Su, André-Denis G. Wright, Ling-li Zhang, Hauke Smidt, and Wei-yun Zhu. "Lean Breed Landrace Pigs Harbor Fecal Methanogens at Higher Diversity and Density than Obese Breed Erhualian Pigs." Archaea 2012 (2012): 1–9. http://dx.doi.org/10.1155/2012/605289.

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The diversity of fecal methanogens of Erhualian (obese type) and Landrace (lean type) pigs was examined using separate 16S rRNA gene libraries for each breed. A total of 763 clones were analyzed; 381 from the Erhualian library and 382 from the Landrace library were identified belonging to the genus Methanobrevibacter. Others were identified belonging to the genus Methanosphaera. The two libraries showed significant differences in diversity (P<0.05) and composition (P<0.0001). Only two operational taxonomic units (OTUs) were found in both libraries, whereas six OTUs were found only in the

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37

Hoedt, Emily C., Donovan H. Parks, James G. Volmer, et al. "Culture- and metagenomics-enabled analyses of the Methanosphaera genus reveals their monophyletic origin and differentiation according to genome size." ISME Journal 12, no. 12 (2018): 2942–53. http://dx.doi.org/10.1038/s41396-018-0225-7.

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38

Min, Byeng R., Sandra Solaiman, Raymon Shange, and Jong-Su Eun. "Gastrointestinal Bacterial and Methanogenic Archaea Diversity Dynamics Associated with Condensed Tannin-Containing Pine Bark Diet in Goats Using 16S rDNA Amplicon Pyrosequencing." International Journal of Microbiology 2014 (2014): 1–11. http://dx.doi.org/10.1155/2014/141909.

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Eighteen Kiko-cross meat goats (n=6) were used to collect gastrointestinal (GI) bacteria and methanogenic archaea for diversity measures when fed condensed tannin-containing pine bark (PB). Three dietary treatments were tested: control diet (0% PB and 30% wheat straw (WS); 0.17% condensed tannins (CT) dry matter (DM)); 15% PB and 15% WS (1.6% CT DM), and 30% PB and 0% WS (3.2% CT DM). A 16S rDNA bacterial tag-encoded FLX amplicon pyrosequencing technique was used to characterize and elucidate changes in GI bacteria and methanogenic archaea diversity among the diets.Proteobacteriawas the most d

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39

Lang, Kristina, Jörg Schuldes, Andreas Klingl, Anja Poehlein, Rolf Daniel, and Andreas Brune. "New Mode of Energy Metabolism in the Seventh Order of Methanogens as Revealed by Comparative Genome Analysis of “Candidatus Methanoplasma termitum”." Applied and Environmental Microbiology 81, no. 4 (2014): 1338–52. http://dx.doi.org/10.1128/aem.03389-14.

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ABSTRACTThe recently discovered seventh order of methanogens, theMethanomassiliicoccales(previously referred to as “Methanoplasmatales”), so far consists exclusively of obligately hydrogen-dependent methylotrophs. We sequenced the complete genome of “CandidatusMethanoplasma termitum” from a highly enriched culture obtained from the intestinal tract of termites and compared it with the previously published genomes of three other strains from the human gut, including the first isolate of the order. Like all other strains, “Ca. Methanoplasma termitum” lacks the entire pathway for CO2reduction to

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Mavrommatis, Alexandros, Dimitrios Skliros, Marica Simoni, Federico Righi, Emmanouil Flemetakis, and Eleni Tsiplakou. "Alterations in the Rumen Particle-Associated Microbiota of Goats in Response to Dietary Supplementation Levels of Schizochytrium spp." Sustainability 13, no. 2 (2021): 607. http://dx.doi.org/10.3390/su13020607.

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Fat rich microorganisms, such as microalgae Schizochytrium spp., are potential biotechnological tools in the modulation of rumen microbiome towards ecofriendly and high nutritional value end-products. However, limited in vivo trials have been reported on the topic. The aim of this study was to contribute to the knowledge on the effect of fat rich microalgae on the methanogenic and feed degrading particle-associated microbes in goats’ rumen content. For the trial, twenty-four goats were divided into four homogenous clusters (six goats/treatment) according to their fat corrected (4%) milk yield,

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Mavrommatis, Alexandros, Dimitrios Skliros, Marica Simoni, Federico Righi, Emmanouil Flemetakis, and Eleni Tsiplakou. "Alterations in the Rumen Particle-Associated Microbiota of Goats in Response to Dietary Supplementation Levels of Schizochytrium spp." Sustainability 13, no. 2 (2021): 607. http://dx.doi.org/10.3390/su13020607.

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Fat rich microorganisms, such as microalgae Schizochytrium spp., are potential biotechnological tools in the modulation of rumen microbiome towards ecofriendly and high nutritional value end-products. However, limited in vivo trials have been reported on the topic. The aim of this study was to contribute to the knowledge on the effect of fat rich microalgae on the methanogenic and feed degrading particle-associated microbes in goats’ rumen content. For the trial, twenty-four goats were divided into four homogenous clusters (six goats/treatment) according to their fat corrected (4%) milk yield,

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Shi, Jiajie, and Cuizhi Geng. "Effect of gastrointestinal microbiome and its diversity on the expression of tumor-infiltrating lymphocytes in breast cancer." Journal of Clinical Oncology 37, no. 15_suppl (2019): e14187-e14187. http://dx.doi.org/10.1200/jco.2019.37.15_suppl.e14187.

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e14187 Background: The diversity of gastrointestinal microbiome is closely related to human health. In the present study, we compared gastrointestinal microbiome and tumor-infiltrating lymphocytes (TILs) in breast cancer (BC) patients. Methods: A total of 80 BC patients were divided into three groups based on the expression of TILs as follows: high expression of TILs (TIL-H), medium expression of TILs (TIL-M) and low expression of TILs (TIL-L). DNA of gastrointestinal microbiome was determined by Illumina sequencing and taxonomy of 16S rRNA genes. Kruskal-Wallis test and UniFrac analysis of β-

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Chagas, Juana C., Mohammad Ramin, Ruth Gomez Exposito, Hauke Smidt, and Sophie J. Krizsan. "Effect of a Low-Methane Diet on Performance and Microbiome in Lactating Dairy Cows Accounting for Individual Pre-Trial Methane Emissions." Animals 11, no. 9 (2021): 2597. http://dx.doi.org/10.3390/ani11092597.

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This study examined the effects of partly replacing grass silage (GS) with maize silage (MS), with or without rapeseed oil (RSO) supplementation, on methane (CH4) emissions, production performance, and rumen microbiome in the diets of lactating dairy cows. The effect of individual pre-trial CH4-emitting characteristics on dietary emissions mitigation was also examined. Twenty Nordic Red cows at 71 ± 37.2 (mean ± SD) days in milk were assigned to a replicated 4 × 4 Latin square design with four dietary treatments (GS, GS supplemented with RSO, GS plus MS, GS plus MS supplemented with RSO) appli

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Ouwerkerk, D., A. F. Turner, and A. V. Klieve. "Diversity of methanogens in ruminants in Queensland." Australian Journal of Experimental Agriculture 48, no. 7 (2008): 722. http://dx.doi.org/10.1071/ea08049.

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Methane emissions from ruminant livestock represent a loss of carbon during feed conversion, which has implications for both animal productivity and the environment because this gas is considered to be one of the more potent forms of greenhouses gases contributing to global warming. Many strategies to reduce emissions are targeting the methanogens that inhabit the rumen, but such an approach can only be successful if it targets all the major groups of ruminant methanogens. Therefore, a thorough knowledge of the diversity of these microbes in different breeds of cattle and sheep, as well as in

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Kurth, Julia M., Huub J. M. Op den Camp, and Cornelia U. Welte. "Several ways one goal—methanogenesis from unconventional substrates." Applied Microbiology and Biotechnology 104, no. 16 (2020): 6839–54. http://dx.doi.org/10.1007/s00253-020-10724-7.

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Abstract Methane is the second most important greenhouse gas on earth. It is produced by methanogenic archaea, which play an important role in the global carbon cycle. Three main methanogenesis pathways are known: in the hydrogenotrophic pathway H2 and carbon dioxide are used for methane production, whereas in the methylotrophic pathway small methylated carbon compounds like methanol and methylated amines are used. In the aceticlastic pathway, acetate is disproportionated to methane and carbon dioxide. However, next to these conventional substrates, further methanogenic substrates and pathways

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Fliegerova, Katerina O., Sabine M. Podmirseg, Julia Vinzelj, et al. "The Effect of a High-Grain Diet on the Rumen Microbiome of Goats with a Special Focus on Anaerobic Fungi." Microorganisms 9, no. 1 (2021): 157. http://dx.doi.org/10.3390/microorganisms9010157.

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This work investigated the changes of the rumen microbiome of goats switched from a forage to a concentrate diet with special attention to anaerobic fungi (AF). Female goats were fed an alfalfa hay (AH) diet (0% grain; n = 4) for 20 days and were then abruptly shifted to a high-grain (HG) diet (40% corn grain, 60% AH; n = 4) and treated for another 10 days. Rumen content samples were collected from the cannulated animals at the end of each diet period (day 20 and 30). The microbiome structure was studied using high-throughput sequencing for bacteria, archaea (16S rRNA gene) and fungi (ITS2), a

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Enebe, Matthew, and Olubukola Babalola. "The Influence of Soil Fertilization on the Distribution and Diversity of Phosphorus Cycling Genes and Microbes Community of Maize Rhizosphere Using Shotgun Metagenomics." Genes 12, no. 7 (2021): 1022. http://dx.doi.org/10.3390/genes12071022.

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Biogeochemical cycling of phosphorus in the agro-ecosystem is mediated by soil microbes. These microbes regulate the availability of phosphorus in the soil. Little is known about the response of functional traits of phosphorus cycling microbes in soil fertilized with compost manure (derived from domestic waste and plant materials) or inorganic nitrogen fertilizers at high and low doses. We used a metagenomics investigation study to understand the changes in the abundance and distribution of microbial phosphorus cycling genes in agricultural farmlands receiving inorganic fertilizers (120 kg N/h

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Yuan, Mei, Siqiang Liu, Zhisheng Wang, et al. "Effects of particle size of ground alfalfa hay on caecal bacteria and archaea populations of rabbits." PeerJ 7 (October 18, 2019): e7910. http://dx.doi.org/10.7717/peerj.7910.

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This work was aimed to investigate the effects of the different particle size of ground alfalfa hay on caecal microbial and archeal communities of rabbits. One hundred-twenty New Zealand rabbits (950.3 ± 8.82 g) were allocated into four treatments, with five replicates in each treatment and six rabbits in each replicate. The particle sizes of the alfalfa meal in the four treatment diets were 2,500, 1,000, 100 and 10 µm respectively, while the other ingredients were ground through a 2.5 mm sieve. High-throughput sequencing technology was applied to examine the differences in bacteria and methan

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Akbilgic, Oguz, Ibrahim Karabayir, Hakan Gunturkun, Joseph F. Pierre, Ashley C. Rashe, and Alexandra Thomas. "Machine learning analysis on American Gut Project microbiome data to identify subjects with cancer both with and without chemotherapy exposure." Journal of Clinical Oncology 38, no. 15_suppl (2020): e14069-e14069. http://dx.doi.org/10.1200/jco.2020.38.15_suppl.e14069.

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e14069 Background: There is growing interest in the links between cancer and the gut microbiome. However, the effect of chemotherapy upon the gut microbiome remains unknown. We studied whether machine learning can: 1) accurately classify subjects with cancer vs healthy controls and 2) whether this classification model is affected by chemotherapy exposure status. Methods: We used the American Gut Project data to build a extreme gradient boosting (XGBoost) model to distinguish between subjects with cancer vs healthy controls using data on simple demographics and published microbiome. We then fur

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Mahmood, Mubarik, Ratchaneewan Khiaosa-ard, Qendrim Zebeli, and Renée M. Petri. "Betaine Modulates Rumen Archaeal Community and Functioning during Heat and Osmotic Stress Conditions In Vitro." Archaea 2020 (October 22, 2020): 1–17. http://dx.doi.org/10.1155/2020/8875773.

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Rumen archaea play an important role in scavenging ruminal hydrogen (H2) and thus facilitate rumen fermentation. They require optimum temperature and osmolality for their growth and metabolism; however, a number of external factors may put archaea under heat and osmotic stress. Betaine is an osmolyte, molecular chaperone, and antioxidant; therefore, it bears potential to combat against these stressors. In this in vitro study, three betaine levels, namely, 0 (control), 51 (low), and 286 (high) ppm, were used. Each of these was subjected to two temperatures (39.5 and 42°C) and two osmolality con

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