Abstract
Leucothrix mucor, a filamentous marine heterotrophic bacterium, is found in nature primarily as an algal epiphyte. Its distinctive characteristics make it easily recognizable by dir ect light-microscopic examination, and a method was develop ed to quantify natural populations of L. mucor on algae by direct microscopic counts. L. mucor was found to be widely distributed in the intertidal environment, especially in the mid-to-upper intertidal regions. Populations were most abundant on members of Rhodophyta, particularly on the alga Bangia juscopurpurea. The nature of the L. mucor-algal relationship was investigated by choosing an artificial plastic substrate to which L. mucor would attach. The use of the plastic substrate, both alone, and in conjunction with a natural algal host, gave results supporting the conclusion that L. mucor obtains its nutrients for growth from the alga rather than from seawater. Algae in the upper intertidal region may also protect attached L. mucor from desiccation.
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Literature Cited
Berger, H. und G. Bringmann: Die Scheidenstruktur des Abwasserbakteriums Sphaerotilus natans und des Eisenbakteriums Leptothrix im elektronmikroskopischen Bilde und ihre Bedeutung für die Systematik dieser Gattungen. Zentbl. Bakt. ParasitKde (Abt. II) 107, 318–334 (1953).
Biebl, R.: Über die Temperaturresistenz von Meeresalgen verschiedener Klimazonen und verschiedener tiefer Standorte. Jb wiss. Bot. 88, 389–420 (1939).
Bland, A. D.: Leucothrix mucor as an algal epiphyte in the marine environment, Ph. D. Thesis, Indiana University 1972.
Boney, A. D.: A biology of marine algae, 216 pp. New York: Hutchinson Educational Ltd. 1966.
Bott, T. L. and T. D. Brock: Growth and metabolism of periphytic bacteria: methodology. Limnol. Oceanogr. 15, 333–342 (1970)
Brock, T. D.: The habitat of Leucothrix mucor, a widespread marine microorganism. Limnol. Oceanogr. 11, 303–307 (1966).
—: Bacterial growth rate in the sea: direct analysis by thymidine autoradiography. Science, N.Y. 155, 81–83 (1967).
—: The neotype of Leucothrix mucor Oersted 1944 (emend. mut. char. Harold and Stanier, 1955). Int. J. system. Bact. 19, 281–282 (1969)
Duursma, E. K.: Dissolved organic carbon, nitrogen, and phosphorus in the sea. Neth. J. Sea Res. 1, 1–148 (1960).
Eppley, R. W. and C. R. Bovell: sulfuric acid in Desmareslia. Biol. Bull. mar. biol. Lab., Woods Hole 115, 101–106 (1958).
Fogg, G. E.: The extracellular products of algae. A. Rev. Oceanogr. mar. Biol. 4, 195–212 (1966).
—: Extracellular products of algae in freshwater. Arch. Hydrobiol. (Beih. Ergebn. Limnol.) 5, 1–25 (1971).
Frei, E. and R. D. Preston: Non-cellulosic structural polysaccharide in algal cell walls. II. Association of xylan and mannan in Porphyra umbilicalis. Proc. R. Soc. (Ser. B.) 160, 314–327 (1964).
Harold, R. and R. Y. Stanier: The genera Leucothrix and Thiothrix. Bact. Rev. 19, 49–58 (1955).
Hellebust, J. A.: Excretion of some organic compounds by marine phytoplankton. Limnol. Oceanogr. 10, 192–206 (1965).
Johnson, P. W., J. McN. Sieburth, A. Sastry, C. R. Arnold and M. S. Doty: Leucothrix mucor infestation of benthic crustacca, fish eggs, and tropical algae. Limnol. Oceanogr. 16, 962–969 (1971).
Kelly, M. T.: Physiological ecology and biochemical geography of Leucothrix mucor, Ph. D. Thesis, Indiana University 1969.
— and T. D. Brock: Molecular heterogeneity of isolates of the marine bacterium Leucothrix mucor. J. Bact. 100, 14–21 (1969a).
—: Physiological ecology of Leucothrix mucor. J. gen. Microbiol. 59, 153–162 (1969b).
— Warm water strain of Leucothrix mucor. J. Bact. 98, 1402–1403 (1969c).
Khailov, K. M. and Z. P. Burlakova: Release of dissolved organic matter by marine seaweeds and distribution of their total organic production to inshore communities. Limnol. Oceanogr. 14, 521–527 (1969).
Lewin, J. C.: Silicon metabolism in diatoms. V. Germanium dioxide, a specific inhibitor of diatom growth. Phycologia 6, 1–12 (1966).
Lewin, R. A.: Leucothrix mucor. Biol. Bull. mar. biol. Lab., Woods Hole 117, p. 418 (1959).
Lowry, O. H., N. J. Rosebrough, A. L. Farr, and R. J. Randall: Protein measurement with Folin phenol reagent. J. biol. Chem. 193, 265–275 (1951).
Molisch, H.: Neue farblose Schwefelbakterien. Zentbl. Bakt. ParasitKde (Abt. II). 33, 60–61 (1912).
Munro, A. L. S. and T. D. Brock: Distinction between bacterial and algal utilization of soluble substances in the sea. J. gen. Microbiol. 51, 35–42, (1968).
Nadson, G. A. et N. Krassilnikov: La structure et l'evolution de Pontothrix longissima Nads. et Krassiln. (Chlamydothrix longissima Molisch) une algue incolore du groupe de Schizophyceae. Dokl. Akad. Nauk SSSR (A) 10, 243–247 (1932).
Pringsheim, E. G.: Observations on Leucothrix mucor and Leucothrix cohaerens nov. sp. Bact. Rev. 21, 69–76 (1957).
Provasoli, L.: Growing marine seaweeds. Int. Seaweed Symp. 4, 9–17 (1964).
Sieburth, J. McN.: Acrylic acid, an “antibiotic” principle in Phaeocystis blooms in Antarctic waters. Science, N.Y. 132, 666–667 (1960).
—: Antibacterial substances produced by marine algae. Devs ind. Microbiol. 5, 124–134 (1964).
—: Studies on algal substances in the sea. III. The production of extracellular organic matter by littoral marine algae. J. exp. mar. Biol. Ecol. 3, 290–309 (1969).
— and J. T. Conover: Sargassum tannin, an antibiotic which retards fouling. Nature, Lond. 208, 52–53 (1965).
Zobell, C. E.: The effect of solid surfaces upon bacterial activity. J. Bact. 46, 39–56 (1943).
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Communicated by J. Bunt, Miami
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Bland, J.A., Brock, T.D. The marine bacterium Leucothrix mucor as an algal epiphyte. Marine Biology 23, 283–292 (1973). https://doi.org/10.1007/BF00389335
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DOI: https://doi.org/10.1007/BF00389335