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Das Rhizoid vonUlothrix zonata (Chlorophyceae)

The rhizoid ofUlothrix zonata (Chlorophyceae)

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Abstract

Ulothrix zonata was studied under natural conditions in situ on slides exposed in a river. On them specimens grow in all stages of development. Older filaments are fixed on the substrate not only by the pointed basal cell but mainly by a branched, horizontally expanded rhizoid produced by this cell. The rhizoid grows in correlation with the growth of the filament as a whole. In addition to the basal cell the following cells of the lower portions of the filament are incapable of division and reproduction. Through these cells the upper fully vital cell grows downwards in older stages.

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Authors and Affiliations

  1. Botanisches Institut, Universität Wien, Rennweg 14, A-1030, Wien, Österreich

    Lothar Geitler

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  1. Lothar Geitler
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Geitler, L. Das Rhizoid vonUlothrix zonata (Chlorophyceae). Pl Syst Evol 128, 71–78 (1977). https://doi.org/10.1007/BF00985172

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  • DOI: https://doi.org/10.1007/BF00985172

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