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Relative K+ concentration in the cytosol in the elongation and mature zone in the root epidermis and stele of Col-0 (A) and gork1-1 (B) under normoxic or hypoxic treatments for 1 h and 24 h. Data are the mean ±SE [n=450–600; 50–60 cells analysed for at least nine individual roots (biological replicates)]. Different lower case letters indicate a significant difference at P<0.05.
