Abstract
A microbial trichome extracts nutrients from its immediate surroundings. It may also oxidize electron donors, reduce electron acceptors, and exude the ‘waste’ products of endogenous redox metabolism. Finally, it may effect light harvesting. These exchange fluxes are summed up in a generic model, which covers photoautotrophs as well as chemoheterotrophs. The focus is on endogenous metabolism and the cellular homeostasis of both reducing and phosphorylating equivalents. A novel result is the formulation of four ‘rules’, akin to the Pasteur effect, which govern the compatibility of endogenous metabolism with various assimilatory processes.
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References
Arkin, A. and J. Ross (1994). Computational functions in biochemical reaction networks. Biophys. J. 67, 560–578.
Brock, T. D., M. T. Madigan, J. M. Martinko and J. Parker (1994). Biology of Microorganisms, 7th edn., New Jersey: Prentice-Hall.
Canfield, D. E. and D. J. Des Marais (1994). Cycling of carbon, sulfur, oxygen and nutrients in a microbial mat. In Microbial Mats. Structure, Development and Environmental Significance, L. J. Stal and P. Caumette (eds.), NATO ASI Series G, vol. 35, pp. 255–263. Heidelberg: Springer-Verlag.
De Wit, R., F. P. Van den Ende and H. Van Gemerden (1995). Mathematical simulation of the interactions among cyanobacteria, purple sulfur bacteria and chemotrophic sulfur bacteria in microbial mat communities. FEMS Microbiol. Ecol. 17, 117–136.
De Zwart, J. M. M. and J. G. Kuenen (1995). Compartment model for biological converions of DMS in a microbial mat: Effect of pH on DMS fluxes. FEMS Microbiol. Ecol. 18, 247–255.
Jørgensen, B. B. (1994). Diffusion processes and boundary layers in microbial mats. In Microbial Mats. Structure, Development and Environmental Significance, L. J. Stal and P. Caumette (eds.), NATO ASI Series G, vol. 35, pp. 243–253. Heidelberg: Springer-Verlag.
Jørgensen, B. B., N. P. Revsbech and Y. Cohen (1983). Photosynthesis and structure of benthic microbial mats: Microelectrode and SEM studies of four cyanobacterial communities. Limnol. Oceanogr. 28, 1075–1093.
Kompala, D. S., D. Ramkrishna and G. T. Tsao (1984). Cybernetic modeling of microbial growth on multiple substrates. Biotechnol. Bioeng. 26, 1272–1281.
Kooijman, S. A. L. M. (1993). Dynamic Energy Budgets in Biological Systems. Cambridge, U.K.: Cambridge University Press.
Lovelock, J. E. (1986). Geophysiology: A new look at earth science. Bull. Amer. Meteorol. Soc. 67, 392–397.
Michels, P. A. M., J. P. J. Michels, J. Boonstra and W. N. Konings (1979). Generation of an electrochemical proton gradient in bacteria by the excretion of metabolic end products. FEMS Microbiol. Lett. 5.
Monod, J. (1942). Recherches sur la croissance des cultures bactériennes, PhD thesis.
Nicholls, D. G. and S. J. Ferguson (1992). Bioenergetics 2. New York: Academic Press.
Pavlou, S. and A. G. Fredrickson (1989). Growth of microbial populations in nonminimal media: Some considerations for modeling. Biotechnol. Bioeng. 34, 971–989.
Ramakrishna, R., D. Ramkrishna and A. E. Konopka (1997). Microbial growth on substitutable substrates: Characterizing the consumer-resource relationship. Biotechnol. Bioeng. 54, 77–90.
Schaub, B. E. M. and H. Van Gemerden (1994). Simultaneous phototrophic and chemotrophic growth in the purple sulfur bacterium Thiocapsa roseopersicina M1. FEMS Microbiology Ecology 13, 185–196.
Schlegel, H. G. (1986). General Microbiology, 6th edn., Cambirdge: Cambridge University Press. (translated by Margot Kogut).
Stal, L. J. (1991). The metabolic versatility of the mat-building cyanobacteria Microcoleus chtonoplastes and Oscillatoria limosa and its ecological significance. Algol. Stud. 64, 453–467.
Stal, L. J. (1995). Physiological ecology of cyanobacteria in microbial mats and other communities. New Phytol. 131, 1–32.
Stal, L. J., H. Van Gemerden and W. E. Krumbein (1985). Structure and development of a benthic marine microbial mat. FEMS Microbiol. Ecol. 31, 111–125.
Straight, J. V. and D. Ramkrishna (1994). Cybernetic modeling and regulation of metabolic pathways. Growth on complementary nutrients. Biotechnol. Prog. 10, 574–587.
Van den Ende, F. P. and H. Van Gemerden (1994). Relationships between functional groups of organisms in microbial mats. In Microbial Mats. Structure, Development and Environmental Significance, L. J. Stal and P. Caumette (eds.), NATO ASI Series G, vol. 35, pp. 339–352. Heidelberg: Springer-Verlag.
Van Gemerden, H. (1993). Microbial mats: A joint venture. Marine Geology 113, 3–25.
Visscher, P. T. and F. P. Van den Ende (1994). Diel and spatial fluctuations of sulfur transformations. In Microbial Mats. Structure, Development and Environmental Significance, L. J. Stal and P. Caumette (Eds.), NATO ASI Series G, vol. 35, pp. 353–359. Heidelberg: Springer-Verlag.
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van den Berg, H.A. Modelling the metabolic versatility of a microbial trichome. Bull. Math. Biol. 60, 131–150 (1998). https://doi.org/10.1006/bulm.1997.0026
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DOI: https://doi.org/10.1006/bulm.1997.0026