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Media type:
E-Article
Title:
Some Physiological Characteristics of Myxomycete Swarm-Cells
Contributor:
Kambly, Paul E.
Published:
American Botanical Society, 1939
Published in:
American Journal of Botany, 26 (1939) 2, Seite 88-92
Language:
English
ISSN:
0002-9122;
1537-2197
Origination:
Footnote:
Description:
The swarm-cells of Reticularia Lycoperdon were studied in an effort to discover physiological factors which are associated with the ability to copulate. This paper is a report of experiments to determine the pH, the reducing intensity, the surface charges of swarm-cells, and the effects of vital stains and toxic ions on them. When placed in certain vital stains, all swarm-cells did not stain uniformly or at the same rate. Very often there were many heavily stained cysts and cysts which were not stained. As determined by Small's range indicator method, the pH of the swarm-cells was found to be approximately 6. Oxidation-reduction indicators revealed no definite difference in reducing intensity between swarm-cells of the same age or of different ages. Experiments with copper sulphate, potassium cyanide, potassium ferrocyanide, and iron chloride did not support the view that there are oppositely charged swarm-cells which copulate partly because of an opposite electrical charge. Using an electrophoretic cell, the surface charge borne by swarm-cells, cysts, and zygotes was found to be negative. There was no evidence of positively charged swarm-cells at any age or at different levels of the cell. The difference in staining reaction in vital stains was probably not due either to a difference in reducing intensity or electric charges as postulated by Abe.