Abstract
Light-microscopic investigation of the microorganisms in the hypolimnion of many lakes, shows the presence of a highly diverse population of bacteria. Here, most of the recognizable forms have never been cultured and many of them have not even been described morphologically. Among these bacteria are rod-shaped organisms that are bent in an arc by asymmetric, polar cell growth and that frequently assume the shape of a pretzel. Cell division in the center and separation result in two arcs that face each other. Additional cell divisions and the presence of masses of polymer lead to even numbers of arcs facing each other in a symmetric, mirror-image way (Fig. 1).
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Similar content being viewed by others
Literature Cited
Caldwell, D. E., and Tiedje, J. M. 1975. A morphological study of anaerobic bacteria from the hypolimnia of two Michigan lakes. Canadian Journal of Microbiology 21: 362–376.
Gorlenko, V. M., Dubinina, G. A., and Kuznetsov, S. I. 1977. Ecology of water microorganisms. [In Russian.] Moscow: Isdatel’stvo Nauka, Akademiya Nauk SSSR.
Hirsch, P. 1974. Genus Brachyarcus Skuja 1964, p. 216. In: Buchanan, R. E., Gibbons, N. E. (ed.), Bergey’s manual of determinative bacteriology, 8th ed. Baltimore: Williams & Wilkins.
Nikitin, D. I. 1971. A new soil organism-Renobacter vacuolatum gen. et sp. n. (In Russian, with English summary.) Doklady Akademiia Nauk SSSR 198: 447–450.
Nikitin, D. I. 1973. Direct electron microscopic techniques for the observation of microorganisms in soil, p. 8592. In: Rosswall, Th. (ed.), Modern methods in the study of microbial ecology. Bulletin of the Ecological Research Committee no. 17.
Pfennig, N. 1978. Rhodocyclus purpureus gen. nov. and sp. nov., a ring-shaped, vitamin B,2-requiring member of the family Rhodospirillaceae. International Journal of Systematic Bacteriology 28: 283–288.
Raj, H. D. 1977. Microcyclus and related ring-forming bacteria. CRC Critical Reviews in Microbiology 5:243270.
Skuja, H. 1964. Grundzüge der Algenflora and Algenvegetation der Fjeldgegenden um Abisko in Schwedisch-Lappland. Nova Acta Regiae Societatis Scientiarium Upsaliensis, Seria I V, 18 (3).
Tarakanov, B. V. 1972. Microflora of reindeer rumen studied with the electron microscope. Microbiology [English translation of Mikrobiologiya.] 41: 769–772.
Van Ert, M., and Staley, J. T. 1971. Gas-vacuolated strains of Microcyclus aquaticus. Journal of Bacteriology 108: 236–240.
Walsby, A. E. 1974. The identification of gas vacuoles and their abundance in the hypolimnetic bacteria of Arco Lake, Minnesota. Microbial Ecology 1: 51–61.
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1992 Springer Science+Business Media New York
About this chapter
Cite this chapter
Hirsch, P. (1992). The Genus Brachyarcus. In: Balows, A., Trüper, H.G., Dworkin, M., Harder, W., Schleifer, KH. (eds) The Prokaryotes. Springer, New York, NY. https://doi.org/10.1007/978-1-4757-2191-1_72
Download citation
DOI: https://doi.org/10.1007/978-1-4757-2191-1_72
Publisher Name: Springer, New York, NY
Print ISBN: 978-1-4757-2193-5
Online ISBN: 978-1-4757-2191-1
eBook Packages: Springer Book Archive