Display options
Cite
Russell JB, Baldwin RL. Comparison of substrate affinities among several rumen bacteria: a possible determinant of rumen bacterial competition. Appl Environ Microbiol. 1979;37(3):531-6doi: 10.1128/aem.37.3.531-536.1979.
Russell, J. B., & Baldwin, R. L. (1979). Comparison of substrate affinities among several rumen bacteria: a possible determinant of rumen bacterial competition. Applied and environmental microbiology, 37(3), 531-6. https://doi.org/10.1128/aem.37.3.531-536.1979
Russell, J B, and Baldwin, R L. "Comparison of substrate affinities among several rumen bacteria: a possible determinant of rumen bacterial competition." Applied and environmental microbiology vol. 37,3 (1979): 531-6. doi: https://doi.org/10.1128/aem.37.3.531-536.1979
Russell JB, Baldwin RL. Comparison of substrate affinities among several rumen bacteria: a possible determinant of rumen bacterial competition. Appl Environ Microbiol. 1979 Mar;37(3):531-6. doi: 10.1128/aem.37.3.531-536.1979. PMID: 16345358; PMCID: PMC243250.
Copy Download .nbib Format: NLM
Share it on

Appl Environ Microbiol. 1979 Mar;37(3):531-6. doi: 10.1128/aem.37.3.531-536.1979.

Comparison of substrate affinities among several rumen bacteria: a possible determinant of rumen bacterial competition.

Applied and environmental microbiology

J B Russell, R L Baldwin

Affiliations

  1. Department of Animal Science, University of California, Davis, California 95616.

PMID: 16345358 PMCID: PMC243250 DOI: 10.1128/aem.37.3.531-536.1979

Abstract

Five rumen bacteria, Selenomonas ruminantium, Bacteroides ruminicola, Megasphaera elsdenii, Streptococcus bovis, and Butyrivibrio fibrisolvens were grown in continuous culture. Estimates of substrate affinities were derived from Lineweaver-Burk plots of dilution rate versus substrate concentration. Each bacterium was grown on at least four of the six substrates: glucose, maltose, sucrose, cellobiose, xylose, and lactate. Wide variations in substrate affinities were seen among the substrates utilized by a species and among species for the same substrate. These wide differences indicate that substrate affinity may be a significant determinant of bacterial competition in the rumen where soluble substrate concentrations are often low. Growth of these bacteria in continuous culture did not always follow typical Michaelis-Menten kinetics. Inflated theoretical maximum growth rates and non-linear Lineweaver-Burk plots were sometimes seen. Maintenance energy expenditures and limitation of growth rate by factors other than substrate concentration (i.e., protein synthesis) are discussed as possible determinants of these deviations.

References

  1. Proc R Soc Lond B Biol Sci. 1965 Oct 12;163(991):224-31 - PubMed
  2. Appl Microbiol. 1966 Sep;14(5):794-801 - PubMed
  3. J Gen Microbiol. 1956 Jul;14(3):601-22 - PubMed
  4. J Appl Bacteriol. 1977 Aug;43(1):1-24 - PubMed
  5. Arch Microbiol. 1975 Dec 31;106(3):251-8 - PubMed
  6. Adv Microb Physiol. 1971;6:147-217 - PubMed
  7. Appl Environ Microbiol. 1978 Aug;36(2):319-29 - PubMed
  8. Arch Microbiol. 1977 Nov 18;115(2):135-42 - PubMed

Publication Types