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Cell volume regulation in Claviceps fusiformis. An animal‐type Na,K‐ATPase operating in a fungus?
Author(s) -
Rauferová Ludmila,
Metlička Rudolf,
Beneš Ivan,
Kotyk Arnošt,
Janáček Karel
Publication year - 1997
Publication title -
iubmb life
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.132
H-Index - 113
eISSN - 1521-6551
pISSN - 1521-6543
DOI - 10.1080/15216549700201151
Subject(s) - claviceps purpurea , atpase , fungus , biochemistry , biology , volume (thermodynamics) , chemistry , microbiology and biotechnology , botany , enzyme , physics , quantum mechanics
Claviceps fusiformis, an ergot pathogen of pearl millet, was equilibrated in media without and with 0.1 mM ouabain (g‐strophantin). Highly significant effects of ouabain on the contents of sodium ions and water were found, suggesting that an active transport of sodium ions, similar to that in animal cells, regulates the cell volume of the fungus. The basic role of the sodium pump appears to be to decrease larger cell volumes and to increase the small ones; for this purpose it can even reverse its direction.