Development of the flagellar apparatus during the cell cycle in unicellular algae |
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Authors: | P. L. Beech Kirsten Heimann M. Melkonian |
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Affiliation: | (1) Botanisches Institut, Lehrstuhl 1, Universität zu Köln, Gyrhofstrasse 15, D-W-5000 Köln 41, Federal Republic of Germany |
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Abstract: | Summary Recent evidence has shown that algal cells acquire different flagella and a heterogeneous basal apparatus through the prolonged development of these structures over more than one cell cycle. A system for numbering algal flagella and basal bodies, which is based on developmental studies, is discussed along with the various means by which the flagellar/basal body developmental cycle can be determined. We review the information now available on development of the separate components of the flagellar apparatus-this comes particulary from the Chlorophyta and the Chromophyta-and attempt to elucidate any information which may help in phylogenetic comparisons. New data is provided on developmental changes in the cartwheel part of the basal body and basal body-associated connecting fibrils in green algae.Abbreviations Bb basal body - d right (dexter) root - df right fibrils connecting Bb triplets to microtubular and/or fibrous roots - EM electron microscopy - F flagellum - IMF immunofluorescence microscopy - LM light microscopy - NBBC nucleus-basal body connector - s left (sinister) root - sf 3left fibrils connecting Bb triplets to microtubular and/or fibrous roots. See Nomenclature section of Introduction for the numbering of basal bodies and their flagella; the same numbers apply to Bb-associated d and s roots, and df and sf fibrils |
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Keywords: | Algal flagellates Basal body Development Cell division Flagella Flagellar apparatus Flagellar developmental cycle |
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