Premium
ON THE EFFECTS OF DMSO IN CATION TRANSPORT BY EXCISED BARLEY ROOTS
Author(s) -
Schmid Walter E.
Publication year - 1968
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1968.tb07432.x
Subject(s) - dimethyl sulfoxide , rubidium , biology , biophysics , cell permeability , sodium , potassium , membrane permeability , metabolism , membrane , desorption , biochemistry , chemistry , organic chemistry , adsorption
Dimethyl sulfoxide (DMSO) in concentrations of up to 10% by volume stimulates the uptake of zinc by excised barley roots. In the same concentration it severely depresses uptake of sodium and of rubidium. It does not seem to affect the permeability of the membrane since roots treated with desorption solutions which were 10% in DMSO did not lose more of the preferred ion than did roots desorbed in solutions not containing DMSO. Oxygen utilization (measured in the Warburg respirometer) was reduced when DMSO was present. It is suggested that DMSO is a poisoning agent which interferes with cation transport by attacking some aspect of metabolism and not by influencing the permeability of the membrane.