Summary
Information has been provided for the first time on the fine structure of the tip and base of a haptonema, the organism being that already studied in a preliminary way in Manton and Leedale 1963 a. The tip structure is unexpectedly simple, with the haptonema cavity interposed between the rounded apex of the core and the external wall of the organelle. The base has been shown to be unexpectedly complex in that the number of core fibres, which alone enter the cell deeply, changes progressively from 7 at the surface to 9 at the extreme base. The possible meaning of these observations is discussed in a preliminary way.
Zusammenfassung
Es wird zum ersten Mal über die Feinstruktur sowohl des Endes als auch des Basalstückes eines Haptonemas berichtet. Der Organismus selbst wurde schon früher von Manton u. Leedale (1963a) untersucht. Die Struktur des Endes ist unerwartet einfach, indem der cylindrische Hohlraum des Haptonemas zwischen dem abgerundeten Apex des Zentralstückes und der Außenwand des Organelles liegt. Das Basalstück hingegen erwies sich als unerwartet kompliziert gebaut. Die Zahl der Fibrillen, die alleine ins Zellinnere eintreten, ändert sich sukzessiv von sieben an der Oberfläche auf acht und schließlich auf neun an der Basis. Die möglichen Schlußfolgerungen dieser Beobachtungen werden vorläufig diskutiert.
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Manton, I. Further observations on the fine structure of the haptonema in prymnesium parvum. Archiv. Mikrobiol. 49, 315–330 (1964). https://doi.org/10.1007/BF00406854
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DOI: https://doi.org/10.1007/BF00406854