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  • Cell symmetry  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Pole reversal and the development of cell asymmetry during division in cryptomonad flagellates (1993)
    Springer
    Protoplasma 174 (1993), S. 19-24 
    Details
    ISSN: 1615-6102
    Keywords: Cell division ; Cell symmetry ; Cell polarity ; Komma ; Cryptomonas ; Periplast
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A unique form of cell division is reported for the cellsKomma caudata andCryptomonas ovata (Cryptophyceae). During cytokinesis, the posterior tail-like region of each daughter cell develops from the anterior region of the parental cell. This process, termed “pole reversal”, involves a major realignment in overall cell polarity as well as alterations to cytoplasmic and surface components. Pole reversal may be a consequence of flagellar apparatus transformation and reorientation during division, and pole reversal may facilitate the development of the asymmetric cell shape in daughter cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01404038
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  • 2
    Electronic Resource
    Electronic Resource
    Transformation and development of the flagellar apparatus ofCryptomonas ovata (Cryptophyceae) during cell division (1992)
    Springer
    Protoplasma 170 (1992), S. 53-67 
    Details
    ISSN: 1615-6102
    Keywords: Basal bodies ; Cell symmetry ; Cryptomonas ; Cryptophyceae ; Flagellar apparatus ; Flagellar transformation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary InCryptomonas ovata, long, dorsal flagella are produced which transform during the following cell division into short, ventral flagella. At division there is a reorientation in cell polarity, and the parental basal apparatus, which comprises the basal bodies and associated roots, is distributed to the daughter cells via a complex sequence of events. Flagellar apparatus development includes the transformation of a four-stranded microtubular root into a mature root of different structure and function. Each newly formed basal body nucleates new microtubular roots, but receives a striated fibrous root from a parental basal body. The striated roots are originally produced on the transforming basal body and are “transferred” to the new basal bodies at each successive division. The development of the asymmetric flagellar apparatus throughout the cell cycle is described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01384457
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    Paper (German National Licenses)
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