Abstract
In simulated diurnal experiments withChlorella pyrenoidosa andPseudomonas fluorescens, bacterial growth was virtually confined to the daylight period and occurred at the expense of glycolate, the predominant extracellular product of the alga. Both glycolate levels and14C-DOC excretion rates were much lower in mixed algal-bacterial than in axenicChlorella cultures.
This close coupling of bacterial growth to algal photosynthesis and extracellular release was also observed in Jack's Lake, but not in Lake Erie. Experimental enrichment with lake water particulates >30μm suppressed the daytime growth of bacteria in Jack's Lake, but increased it dramatically in Lake Erie. Daylight doubling times for bacteria in lakewater ranged from 2 to 19 days. In mixed culture withChlorella, Pseudomonas had a doubling time of about 2 hours in the light.
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References
Anderson, G. C., and R. P. Zeutschel: Release of dissolved organic matter by marine phytoplankton in coastal and offshore areas of the Northeast Pacific Ocean. Limnol. Oceanogr.15, 402–407 (1970)
Bell, W. H., J. M. Lang, and R. Mitchell: Selective stimulation of marine bacteria by algal extracellular products. Limnol. Oceanogr.19, 833–839 (1974)
Berman, T.: Release of dissolved organic matter by photosynthesizing algae in Lake Kinneret, Israel. Freshwater Biol.6, 13–18 (1976)
Chrost, R. J.: Inhibitors produced by algae as an ecological factor effecting bacteria in water. II. Antibacterial activity of algae during blooms. Acta Microbiolo. Pol. [B]7, 167–176 (1975)
Chrost, R. J.: The estimation of extracellular release by phytoplankton and heterotrophic activity of aquatic bacteria. Acta Microbiol. Pol.27, 138–146 (1978)
Dunstall, T. G., and C. Nalewajko: Extracellular release in planktonic bacteria. Ver. Int. Verein. Limnol.19, 2643–2649 (1975)
Jolley, E. T. and A. K. Jones: The interaction betweenNavicula muralis Grunow and an associated species of Flavobacterium. Br. Phycol. J.12, 315–328 (1977)
Jones, J. G.: Studies on freshwater bacteria: factors which influence the population and its activity. J. Ecol.59, 593–613 (1971)
Kogure, K., U. Simidu, and N. Taga: Effects ofSkeletonema costatum (Grev.) Cleve on the growth of marine bacteria. J. Exp. Mar. Biol. Ecol.36, 201–215 (1979)
Lee, K., and C. Nalewajko: Photosynthesis, extracellular release and glycollic and acid uptake by photoplankton: fractionation studies. Verh. Int. Verlin. Limnol.20, 257–262 (1978)
Nalewajko, C.: Extracellular release in freshwater algae and bacteria: extracellular products of algae as a source of carbon for heterotrophs. p. 580–624, in J. Cairns, Jr. (ed.): Aquaitic Microbiological Communities. Garland Pub. Inc., (1977)
Nalewajko, C.: Release of organic substances in J. A. Hellebust and J. S. Craigie (ed.): Handbook of Phycological Methods, pp. 389–398. Cambridge University Press, London.
Nalewajko, C., T. G. Dunstall, and H. Shear: Kinetics of extracellular release in axenic algae and in mixed algal bacteria cultures: significance in estimation of total (gross) phytoplankton excretion rates. J. Phycol.12, 1–5 (1976)
Rieper, M.: Investigations on the relationships between algal blooms and bacterial populations in the Sculei Fjord (western Baltic Sea). Heligolunder wiss. Meeresunters28, 1–18 (1976)
Saunders, G. W.: The transformation of artificial detritus in lake water. Mem. Inst. Ital. Idrobiol. [Suppl.]29, 261–288 (1972)
Saunders, G. W.: Decomposition in freshwater. in J. M. Anderson and A. Macfadyen (ed.): The Role of Terrestrial and Aquatic Organisms in Decomposition Processes, Blackwell Scientific Publications, Oxford (1976)
Saunders, G. W., and T. A. Storch: Coupled oscillatory control mechanisms in a planktonic system. Nature [New Biol.]230, 58–60 (1971)
Schmidt, G. W.: Vertical distribution of bacteria and algae in a tropical pond. Int. Rev. Ges. Hydrobiol.54, 791–797 (1969)
Sieburth, J. McN.: Bacterioplankton: nature, biomass, activity and relationships to the Protist plankton. Abstract. Symposium: Phytoplankton-bacteria-protozoa relationships in aquatic environments; an ecological view. Phycol. Soc. of America, Athens, Georgia. Aug. 20–25 (1978)
Smith, W. O., R. T. Barber, and S. A. Huntsman: Primary production off the coast of northwest Africa: excretion of dissolved organic matter and its heterotrophic uptake. Deep-sea Res.24 (1977)
Stainton, M. P., M. J. Capel, F. A. J. Armstrong: The chemical analysis of fresh water. Fish. Res. Board Can. Misc. Spec. Publ.25, 125 pp. (1974)
Tanaka, N., M. Nakanisht, and H. Kadota: Nutritional interrelation between bacteria and phytoplankton in a pelagic ecosystem. in R. R. Colewell and R. Y. Morite (eds): Effect of the Ocean Environment on Microbial Distribution, pp. 495–509. University Park Press, Baltimore (1974)
Williams, P. J. LeB., and C. S. Yentsch: An examination of phytosynthetic production, excretion of photosynthetic products, and heterotrophic utilization of dissolved organic compounds with reference to results from a coastal subtropical sea. Mar. Biol.35, 31–40 (1976)
Wright, R. T.: Studies on glycolic acid metabolism by freshwater bacteria. Limnol. Oceanogr.20, 626–633 (1975)
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Nalewajko, C., Lee, K. & Fay, P. Significance of algal extracellular products to bacteria in lakes and in cultures. Microb Ecol 6, 199–207 (1980). https://doi.org/10.1007/BF02010385
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DOI: https://doi.org/10.1007/BF02010385