ISSN:
1432-072X
Keywords:
Aphanothece halophytica
;
Ion metabolism
;
Blue-green alga
;
Halophilism
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract The intracellular ion content of the halophilic blue-green alga, Aphanothece halophytica was studied as a function of age, external sodium and external potassium concentration. Intracellular Na+ was found to be about 0.38 millimoles/g dry mass. Intracellular K+ concentrations were as high as 1 M and varied directly with external salinity. Intracellular Ca++ and Mg++ were in the range previously reported for fresh water blue-green algae despite their extremely high extracellular concentrations. Average cell size is consistent at room temperature with two exceptions. When the outside K+ is lower than 6.5 mM the cells tend to be smaller with less intracellular K+ and high Ca++. In stationary phase cultures the cells are larger with high intracellular Mg++ and low K+.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00446561
Permalink
