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Studies on microplasmodia ofPhysarum polycephalum. VII. Adhesion-dependent changes in the organization of the fibrillar actin system

Authors
Journal
Cell Biology International Reports
0309-1651
Publisher
Portland Press
Publication Date
Volume
11
Issue
7
Identifiers
DOI: 10.1016/0309-1651(87)90015-4

Abstract

Abstract Axenically-grown microplasmodia of the acellular slime mold Physarum polycephalum were used to study adhesion-dependent changes in the spatial organization of the cytoplasmic microfilament system. Results obtained by light- and electron microscopical techniques demonstrate the presence of a membrane-bound filament cortex in all microplasmodia, and the expression of additional cytoplasmic fibrils in specimens with tight contact to a substratum. The fibrils partly terminate in focal adhesion-sites and rather seem to serve a cytoskeletal than a contractile function.

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