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Lateral apertures as passage-ways between ectoplasm and endoplasm in plasmodial strands of Physarum

Authors
Journal
Cell Biology International Reports
0309-1651
Publisher
Portland Press
Publication Date
Volume
6
Issue
1
Identifiers
DOI: 10.1016/0309-1651(82)90104-7
Disciplines
  • Biology

Abstract

Abstract Plasmodial strands of Physarum polycephalum are differentiated into an ectoplasmic tube and an endoplasmic core. The border of the ectoplasmic tube represents a circular arranged system of plasmalemma invaginations containing apertures which allow a continuous exchange of endoplasm and ectoplasm during the oscillating contraction-relaxation cycles. The apertures of thick plasmodial strands are described using phase-microscopy of semithin sections. Their physiological importance for signal transmission, endoplasmic mass transport and thereby plasmodial locomotion is discussed.

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