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Membrane and ion transport properties in cereals under acidic and alkaline stress
Author(s) -
Bérczi Alajos,
Erdei Lárszló,
Zsoldos Ferenc
Publication year - 1981
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1981.tb02734.x
Subject(s) - chemistry , oryza sativa , membrane , electron paramagnetic resonance , pellet , ion , ion transporter , permeability (electromagnetism) , analytical chemistry (journal) , chromatography , biochemistry , nuclear magnetic resonance , materials science , physics , composite material , organic chemistry , gene
An electron spin resonance study of fatty acid spin labels incorporated into plasmalemma from rice ( Oryza sativa L. cv. Dunghan Shali) and wheat ( Triticum aestivum L. cv. GK Szeged) roots is presented. Plasmalemma‐rich microsomal fractions of rice and wheat roots were prepared by centrifugation and final pellets were resuspended in buffer solution with pH values from 3 to 8 in the presence and absence of Ca 2+ . The effects of pH and Ca 2+ on the hyperfine splitting extremum 2A 11 were measured and compared to earlier influx experiments on the same roots. The possible contribution of passive ion transport to the permeability properties of these roots is discussed.