Corpus ID: 86224008

Identification of rumen methanogens, characterization of substrate requirements and measurement of hydrogen thresholds : a thesis presented in partial fulfilment of the requirements for the degree of Master 's in Microbiology

  title={Identification of rumen methanogens, characterization of substrate requirements and measurement of hydrogen thresholds : a thesis presented in partial fulfilment of the requirements for the degree of Master 's in Microbiology},
  author={C. Kim},
Bacteria and Methanogens Differ along the Gastrointestinal Tract of Chinese Roe Deer (Capreolus pygargus)
There was intra variation in the bacterial community composition across the GIT of roe deer, and also showed that the methanogen community in the rumen differed from that in the cecum. Expand
Enrichment culture of coal samples from underground mines (Jitpur and Moonidih underground mines) located in Dhanbad region, the Indian state of Jharkhand was tested positive for the presence ofExpand
Investigation and manipulation of metabolically active methanogen community composition during rumen development in black goats
The RNA-based real-time quantitative PCR and 16S rRNA amplicon sequencing were employed and showed that active methanogens colonized in RL and RE on 1 d after birth, and RP and RE contained the highest and lowest density of methanogenic populations. Expand
Influence of Sire Breed on the Interplay among Rumen Microbial Populations Inhabiting the Rumen Liquid of the Progeny in Beef Cattle
The results revealed that the frequency of particular microbial phylotypes in the progeny of cattle may be influenced by the sire breed when different diets are fed and ultimately impact host metabolic functions, such as feed efficiency. Expand


Investigation of rumen methanogens in New Zealand livestock. PhD Thesis at Massey University, New Zealand
  • FEMS Microbiol Ecol,
  • 2010
Influence of hydrogen on rumen methane formation and fermentation balances through microbial growth kinetics and fermentation thermodynamics
Analysis of the literature confirms that increased particulate passage rate is associated with higher rumen H2 concentrations, less CH4 formation, and increased importance of propionate as a fermentation endproduct, and the model suggests that the prevailing H2 concentration influences the thermodynamics of rumen fermentation. Expand
The genome sequence of Methanosphaera stadtmanae reveals why this human intestinal archaeon is restricted to methanol and H2 for methane formation and ATP synthesis.
Four sets of mtaABC genes coding for methanol:coenzyme M methyltransferases were found in the genome of M. stadtmanae and exhibit homology to mta genes previously identified in Methanosarcina species, which explains why this archaeon is dependent on acetate for biosynthesis of cell components. Expand
The capacity of hydrogenotrophic anaerobic bacteria to compete for traces of hydrogen depends on the redox potential of the terminal electron acceptor
The effect of different electron acceptors on substrate degradation was studied in pure and mixed cultures of various hydrogenotrophic homoacetogenic, methanogenic, sulfate-reducing,Expand
Kinetic Analysis of Competition Between Sulfate Reducers and Methanogens for Hydrogen in Sediments
The outcome of competition at any time was a function of the rate of hydrogen production, the relative population sizes, and sulfate availability, and the lower half-saturation constant of sulfate reducers enabled them to inhibit methane production by lowering the hydrogen partial pressure below levels that methanogens could effectively utilize. Expand
Exploring rumen methanogen genomes to identify targets for methane mitigation strategies
Although the research is mainly at the explorative stage, two types of opportunities for inhibiting methanogens are emerging, being inactivation of conserved methanogen enzymes by screening for, or designing, small inhibitors via a chemogenomics approach, and identifying surface proteins shared among rumen methanogenic species that can be used as antigens in an anti-methanogen vaccine. Expand
Methanogen community structure in the rumens of farmed sheep, cattle and red deer fed different diets.
The composition of archaeal communities in the rumens of farmed sheep, cattle and red deer is investigated using denaturing gradient gel electrophoresis (DGGE) to generate fingerprints of Archaeal 16S rRNA genes. Expand
Characterization of Variation in Rumen Methanogenic Communities under Different Dietary and Host Feed Efficiency Conditions, as Determined by PCR-Denaturing Gradient Gel Electrophoresis Analysis
The structure of the methanogenic community at the species or strain level may be more important for determining host feed efficiency under different dietary conditions. Expand
Characterization of variation in rumen
  • 2010