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  • 1
    Electronic Resource
    Electronic Resource
    The role of genes in biological processes. Part 2 (1990)
    s.l. : American Chemical Society
    Environmental science & technology 24 (1990), S. 162-169 
    Details
    ISSN: 1520-5851
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/es00072a002
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  • 2
    Electronic Resource
    Electronic Resource
    The role of genes in biological processes. Part 1 (1990)
    s.l. : American Chemical Society
    Environmental science & technology 24 (1990), S. 23-29 
    Details
    ISSN: 1520-5851
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/es00071a002
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Characterization ofPseudomonas geomorphus: A novel groundwater bacterium (1989)
    Springer
    Microbial ecology 18 (1989), S. 221-233 
    Details
    ISSN: 1432-184X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Strain ABS10, a Gram-negative, pleomorphic bacterium isolated from a pristine aquifer in Ada, Oklahoma, was studied as a candidate for the introduction and expression of plasmid DNA in a native ground water isolate. This organism was originally typed as anArthrobacter sp. due to its morphological phase change and Gram-variable reaction upon Gram staining. The fatty acid methyl ester profile of ABS10 revealed a high similarity withPseudomonas putida. DNA-DNA hybridization showed 81% homology between ABS10 andP. putida. 16S rRNA sequence analysis showed ABS 10 to be a member of the Gamma division of the purple photosynthetic bacteria. The organism has been designatedPseudomonas geomorphus due to its isolation from a subterranean sample and the morphological phase change from rods in young cultures to cocci in older cultures. The broad host range plasmid RP4 was introduced into ABS10 and stably maintained, indicating that RP4 may serve as a vehicle for the introduction of catabolic genes into this organism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02075810
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  • 4
    Electronic Resource
    Electronic Resource
    Stability and conjugal transfer kinetics of a TOL plasmid in Pseudomonas aeruginosa PAO 1162 (1994)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology ecology 15 (1994), S. 0 
    Details
    ISSN: 1574-6941
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract Batch mating experiments were employed to study the kinetics of the conjugal transfer of a TOL plasmid, using the transconjugant strain Pseudomonas aeruginosa PAO 1162 (TOL) as the plasmid donor and Pseudomonas putida PB 2442 and Pseudomonas aeruginosa PAO 1162N as the plasmid recipients. Transfer rates from PAO 1162 (TOL) to PAO 1162N and PB 2442 measured for exponentially grown PAO 1162 (TOL) were 1.81 × 10−14 (standard error (S.E.) 1.25 × 10−15) ml·cell−1min−1 and 3.32 × 10−13 (S.E. 4.42 × 10−14) ml·cell−1min−1, respectively. The instability of the TOL plasmid in PAO 1162 (TOL) was evaluated under conditions that were non-selective for maintenance of the TOL catabolic functions. The measured rates of instability were 6.7 10−6 to 8.3 10−6 min−1, and the loss of the catabolic functions was mainly caused by structural instability of the plasmid.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6941.1994.tb00256.x
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  • 5
    Electronic Resource
    Electronic Resource
    Genomics Blueprints for partnerships (2006)
    [s.l.] : Nature Publishing Group
    Nature 443 (2006), S. 925-927 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Earth was a planet of microbes long before multicellular life appeared and diversified. The evolution of all plants, animals and fungi has thus been profoundly influenced by microorganisms. As a result, many innovative partnerships, known as symbioses, have developed between microbes and their host ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nature05208
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  • 6
    Electronic Resource
    Electronic Resource
    Isolation of an autotrophic ammonia-oxidizing marine archaeon (2005)
    [s.l.] : Nature Publishing Group
    Nature 437 (2005), S. 543-546 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] For years, microbiologists characterized the Archaea as obligate extremophiles that thrive in environments too harsh for other organisms. The limited physiological diversity among cultivated Archaea suggested that these organisms were metabolically constrained to a few environmental niches. For ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nature03911
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  • 7
    Electronic Resource
    Electronic Resource
    Comparison of phylogenetic relationships based on phospholipid fatty acid profiles and ribosomal RNA sequence similarities among dissimilatory sulfate-reducing bacteria (1994)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 119 (1994), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract Twenty-five isolates of dissimilatory sulfate-reducing bacteria were clustered based on similarity analysis of their phospholipid ester-linked fatty acids (PLFA). Of these, 22 showed that phylogenetic relationships based on the sequence similarity of their 16S rRNA directly paralleled the PLFA relationships. Desulfobacter latus and Desulfobacter curvatus grouped with the other Desulfobacter spp. by 16S rRNA comparison but not with the PLFA analysis as they contained significantly more monoenoic PLFA than the others. Similarly, Desulfovibrio africanus clustered with the Desulfovibrio spp. by 16S rRNA but not with them when analyzed by PLFA patterns because of higher monoenoic PLFA content. Otherwise, clustering obtained with either analysis was essentially congruent. The relationships defined by PLFA patterns appeared robust to shifts in nutrients and terminal electron acceptors. Additional analyses utilizing the lipopolysaccharide-lipid A hydroxy fatty acid patterns appeared not to shift the relationships based on PLFA significantly except when completely absent, as in Gram-positive bacteria. Phylogenetic relationships between isolates defined by 16S rRNA sequence divergence represent a selection clearly different from the multi-enzyme activities responsible for the PLFA patterns. Determination of bacterial relationships based on different selective pressures for various cellular components provides more clues to evolutionary history leading to a more rational nomenclature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1994.tb06905.x
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  • 8
    Electronic Resource
    Electronic Resource
    Acetivibrio cellulolyticus and Bacteroides cellulosolvens are members of the greater clostridial assemblage (1994)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 124 (1994), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract The nucleotide sequences of the 16S rRNA genes of Acetivibrio cellulolyticus, A. cellulosolvens, and Bacteroides cellulosolvens were determined and shown to be affiliated with the low G+C members of Gram-positive bacteria. The sequences for A. cellulolyticus and A. cellulosolvens were revealed to be identical, supporting the proposal by W.D. Murray [Int. J. Syst. Bacteriol. (1986) 36, 314–316] that A. cellulosolvens be correctly classified as A. cellulolyticus. The closest relative to A. cellulolyticus is Clostridium aldrichii, related at 98.5% sequence similarity. B. cellulosolvens and A. cellulolyticus are related at 94.4% sequence similarity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1994.tb07277.x
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  • 9
    Electronic Resource
    Electronic Resource
    Taxon-specific associations between protozoal and methanogen populations in the rumen and a model rumen system (1998)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology ecology 26 (1998), S. 0 
    Details
    ISSN: 1574-6941
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Methanogen populations in the rumen and in model rumen systems (operated over a 240-h period) were studied using the small subunit (SSU) rRNA phylogenetic framework for group-specific enumerations. Representatives of the family Methanobacteriaceae were the most abundant methanogen population in the rumen, accounting for 89.3% (± 1.02%) of total archaea in the rumen fluid and 99.2% (± 1.8%) in a protozoal fraction of rumen fluid. Their percentage of archaea in the model rumen systems declined from 84% (± 8.5%) to 54% (± 7.8%) after 48 h of operation, correlated with loss of protozoa from these systems. The Methanomicrobiales, encompassed by the families Methanomicrobiaceae, Methanocorpusculaceae, and Methanospirillaceae were the second most abundant population and accounted for 12.1% (± 2.15%) of total SSU rRNA in rumen fluid. Additionally this group was shown to be essentially free living, since only a negligible hybridization signal was detected with the ruminal protozoal fraction. This group constituted a more significant proportion of total archaea in whole rumen fluid, 12.1% (± 2.1%) and model rumen fluid containing no protozoa (26.3 ± 7.7%). In contrast, the Methanosarcinales, generally considered the second most abundant population of rumen methanogens, accounted for only 2.8% (± 0.3%) of total archaeal SSU rRNA in rumen fluid.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6941.1998.tb01563.x
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  • 10
    Electronic Resource
    Electronic Resource
    Microbial community structure in gastrointestinal tracts of domestic animals: comparative analyses using rRNA-targeted oligonucleotide probes (1997)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology ecology 22 (1997), S. 0 
    Details
    ISSN: 1574-6941
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The microbial community structure of the gastrointestinal (GI) tracts of various domestic animals (bovine, ovine, caprine, and swine) was evaluated using oligonucleotide probes targeting the small subunit (SSU) ribosomal RNA (rRNA) of major microbial groups. Bacterial, eukaryotic, and archaeal rRNAs were estimated to account for approximately 60–90%, 3–30% and 0.5–3%, respectively, of the total rRNA present in the GI tracts of most of the animals examined in this study. The abundance of phylogenetically defined groups of methanogens and sulfate-reducing bacteria (SRB) was also evaluated. Methanobacteriales were the predominant methanogens in the rumen of bovine and caprine, while Methanomicrobiales predominated in the ovine rumen. A dominant archaeal group could not be identified in other sampling locations of the GI tract of these ruminants and in the GI tract of pigs, using the available collection of group-specific probes. Desulfovibrio species were the most abundant Gram-negative SRB targeted by available probes in the GI tract of nearly all animals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6941.1997.tb00380.x
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