• Publications
  • Influence
Microbial Cellulose Utilization: Fundamentals and Biotechnology
TLDR
A concluding discussion identifies unresolved issues pertaining to microbial cellulose utilization, suggests approaches by which such issues might be resolved, and contrasts a microbially oriented cellulose hydrolysis paradigm to the more conventional enzymatically oriented paradigm in both fundamental and applied contexts. Expand
Biomass Yield and Biofuel Quality of Switchgrass Harvested in Fall or Spring
Seasonal time of switchgrass (Panicum virgatum L.) harvest affects yield and biofuel quality and balancing these two components may vary depending on conversion system. A field study compared fallExpand
Dominance of Prevotella and low abundance of classical ruminal bacterial species in the bovine rumen revealed by relative quantification real-time PCR
TLDR
The data suggest that the aggregate abundance of the most intensively studied ruminal bacterial species is relatively low and that a large fraction of the uncultured population represents a single bacterial genus. Expand
Why don't ruminal bacteria digest cellulose faster?
  • P. Weimer
  • Biology, Medicine
  • Journal of dairy science
  • 1 August 1996
TLDR
In light of numerous proposals to improve microbial cellulose digestion in ruminants, it is instructive to examine the characteristics of these species that contribute to their superior cellulolytic capabilities and to identify the factors that prevent them from digesting cellulose even more rapidly. Expand
Initial pH as a determinant of cellulose digestion rate by mixed ruminal microorganisms in vitro.
TLDR
A model is proposed in which the first-order rate constant of cellulose digestion is determined by the pH at which the fermentation is initiated, and end product ratios reflect greater activity of the noncellulolytic population as pH declines. Expand
An Insect Herbivore Microbiome with High Plant Biomass-Degrading Capacity
TLDR
It is revealed that the fungus garden microbiome of leaf-cutter ants is composed of a diverse community of bacteria with high plant biomass-degrading capacity, indicating evolutionary convergence of plant biomass degrading potential between two important herbivorous animals. Expand
The Complete Genome Sequence of Fibrobacter succinogenes S85 Reveals a Cellulolytic and Metabolic Specialist
TLDR
The F. succinogenes genome reveals a bacterium that specializes in cellulose as its sole energy source, and provides insight into a novel strategy for cellulose degradation. Expand
Effect of diet on populations of three species of ruminal cellulolytic bacteria in lactating dairy cows.
TLDR
Although diet and individual cows had major effects on ruminal pH and volatile fatty acid concentrations and on milk production and composition, differences in cellulolytic populations that were attributable to individual cows were larger than those attributable to diet, suggesting that each cow maintained a unique assemblage of cellulolytics species. Expand
Redundancy, resilience, and host specificity of the ruminal microbiota: implications for engineering improved ruminal fermentations
  • P. Weimer
  • Biology, Medicine
  • Front. Microbiol.
  • 10 April 2015
TLDR
The ruminal microbial community is remarkably diverse, containing 100s of different bacterial and archaeal species, plus many species of fungi and protozoa, including a “core microbiome” dominated by phyla Firmicutes and Bacteroidetes, but also containing many other taxa. Expand
Host specificity of the ruminal bacterial community in the dairy cow following near-total exchange of ruminal contents.
TLDR
The data suggest that a cow's ruminal BCC displays substantial host specificity that can reestablish itself with varying success when challenged with a microbial community optimally adapted to ruminal conditions of a different host animal. Expand
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