Wiencke C, Stelzer R, Läuchli A. Ion compartmentation in Porphyra umbilicalis determined by electron-probe X-ray microanalysis.
PLANTA 1983;
159:336-341. [PMID:
24258231 DOI:
10.1007/bf00393172]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/1983] [Accepted: 07/19/1983] [Indexed: 06/02/2023]
Abstract
The ion composition of cell compartments in the intertidal red alga Porphyra umbilicalis adapted for two weeks in 3.5 x artificial seawater was determined by X-ray microanalysis of unfixed, frozen, bulk specimens. A procedure is described for the calculation of ion concentrations in the main cell compartment, cytoplasm, vacuoles and plastid. The results indicate high K(+) and low Na(+) concentrations in cytoplasm and plastid. Sodium ions are preferentially localized in vacuoles. Both, vacuoles and plastid contain high Cl(-) concentrations.
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