Substructural morphogenesis of the spindle apparatus in meiotic basidia ofCoprinus micaceus (Agaricales) |
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Authors: | Prof. Dr. Charlotte Thielke |
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Affiliation: | 1. Institut für Zellbiologie und Pflanzenphysiologie der Freien Universit?t, K?nigin-Luise-Stra?e 12–16a, D-1000, Berlin 33
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Abstract: | The spindle apparatus ofCoprinus micaceus begins to develop from the diglobular polar body outside the nucleus. During both meiotic divisions it operates inside the nuclear envelope and consists of two amorphous poles, a central bundle of interpolar microtubules, and chromosomal microtubules. A metaphase plate cannot exist because the interpolar strand of fibers is persistent throughout the division process. Within the spindle axis more than 100 microtubules can be estimated. They are encircled by a ring of chromatic structures. During the telophase the former spindle pole is evaginated from the nuclear envelope and contacts the plasmalemma near the cell wall. |
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Keywords: | Basidiomycetes Agaricales Coprincaceae Coprinus.— Meiosis central spindle microtubules nuclear envelope |
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