Acineta tuberosa

@article{Bardele2004AcinetaT,
  title={Acineta tuberosa},
  author={Christian F. Bardele},
  journal={Zeitschrift f{\"u}r Zellforschung und Mikroskopische Anatomie},
  year={2004},
  volume={93},
  pages={93-104}
}
  • C. F. Bardele
  • Published 2004
  • Biology
  • Zeitschrift für Zellforschung und Mikroskopische Anatomie
SummaryUltrastructural changes in the macronucleus during the complete cycle of asexual reproduction of Acineta tuberosa (Suctoria) are described. Using time-lapse photography Heckmann (1966) demonstrated that in Tokophrya lemnarum just prior to macronuclear division thread-like chromatin strands rotate around several centres. Corresponding stages have now been identified in electron micrographs of Acineta.Of considerable interest is the distribution of microtubules during cell cycle. Numerous… 
Asexual reproduction in the suctorianDiscophrya collini
TLDR
Discophrya collini reproduces asexually through the formation of a ciliated swarmer by evaginative budding and it is suggested that this evagination is induced by a rapid breakdown of supporting microtubules in the cavity wall and the subsequent hydrostatic pressure exerted by the body cytoplasm.
Aktomyosinartige Filamente im Teilungsmakronukleus des Ciliaten Ichthyophthirius Multifiliis
TLDR
It is suggested that the pre-divisional intranuclear rotational movement is a mechanism to avoid aneuploidy by producing a random arrangement of replicated hereditary units prior to division.
Elektronenmikroskopische Untersuchung an dem Suktor Paracineta limbata Maupas
  • M. Hauser
  • Chemistry
    Zeitschrift für Zellforschung und Mikroskopische Anatomie
  • 2004
SummaryThe fine structure of pellicle, stalk and casing of the suctorian Paracineta limbata is described.1.Paracineta limbata has food capturing and sucking tentacles whose structure was
Antimitotic agents and macronuclear division of ciliates
TLDR
A ciliate protozoan exposed to 5 mg/ml colchicine to prevent cell division is able to overcome the initial inhibitory effect of the drug both in exponentially growing and in heat-shock synchronized cultures.
Phylogeny and Systematic Position of Zosterodasys (Ciliophora, Synhymeniida): A Combined Analysis of Ciliate Relationships Using Morphological and Molecular Data
ABSTRACT. The Synhymeniida is characterized both by a band of somatic dikinetids, the synhymenium, extending across the surface of the cell and by a ventral cell mouth lacking specialized feeding
The ultrastructure of nuclear division in a suctorian, Tokophrya infusionum
TLDR
Ultrastructural changes in the micro- and macronucleus throughout division were followed in synchronized cultures of the suctorian, Tokophrya infusionum to find out why colchicine seems to block division at a very early stage.
Antimitotic agents and macronuclear division of ciliates
TLDR
A ciliate protozoan exposed to 5 mg/ml colchicine to prevent cell division is able to overcome the initial inhibitory effect of the drug both in exponentially growing and in heat-shock synchronized cultures.

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TLDR
The concepts are discussed that filaments are metastable structures and that the transitions from one state to another are functionally significant, in relation to filament involvements in cell movements.
Deoxyribonucleic Acid Synthesis and Distribution During Growth and Amitosis of the Macronucleus of Euplotes
SYNOPSIS. Short sections of deoxyribonucleic acid (DNA) in the elongated macronucleus of Euplotes eurystomus were labeled by means of a short exposure to tritiated (H3-) thymidine to follow by
Elektronenmikroskopische Beobachtungen zur Nahrungsaufnahme bei dem Suktor Acineta tuberosa Ehrenberg
Summary1.The fine structure of the tentacle of the suctorian Acineta tuberosa is described.2.Organelles originally called “missile-like bodies” which stick to the pellicle of the knob of the tentacle
FURTHER OBSERVATIONS ON THE FINE STRUCTURE OF THE MACRONUCLEUS IN TOKOPHRYA INFUSIONUM
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  • Environmental Science
    The Journal of biophysical and biochemical cytology
  • 1956
TLDR
It was found that the same honeycomb structure appears in great abundance in the macronuclei of overfed organisms, which permitted a better three-dimensional reconstruction of the described structure.