in order to investigate effective morpho-physiological traits related to salinity resistance, and their relationship with grain yield as well as study of salinity tolerance and susceptibility indices in 169 barley recombinant inbred lines, a  population of barley derived from a cross between arigashar and igri, this experiments were carried out using alpha lattice design with two replications d...

To determine Na+/H+ exchange in lamprey erythrocyte membranes, the cells were acidified to pH(i) 6.0 using the K+/H+ ionophore nigericin. Incubation of acidified erythrocytes in a NaCl medium at pH 8.0 caused a considerable rise in 22Na+ influx and H+ efflux during the first 1 min of exposure. In addition, exposure of acidified red cells to NaCl medium was associated with rapid elevation of int...

The resting and action potentials of sartorius muscles of the toad, Bufo marinus, have been measured under varying conditions of external environment. At the same time, analyses for Na(+) and K(+) content were carried out. There was a slight elevation of 2 mv. when the measurements were made in phosphate-Ringer instead of in bicarbonate-Ringer. The R.P. was independent of the hydrogen ion conce...

The effects of an extracellular sodium (Na) concentration of 200 mM on function, ionic exchange, and water movements were examined in the vascularly perfused rabbit intraventricular septum. When the perfusate was switched from 142 mMNa to 200 mMNa, dP/ dt fell 20.4% over 2 minutes; dP/dt then recovered to the control level. The time course of the functional recovery correlated with the uptake o...

The effects of an extracellular sodium (Na) concentration of 200 mM on function, ionic exchange, and water movements were examined in the vascularly perfused rabbit intraventricular septum. When the perfusate was switched from 142 mMNa to 200 mMNa, dP/ dt fell 20.4% over 2 minutes; dP/dt then recovered to the control level. The time course of the functional recovery correlated with the uptake o...

Cation permeability and lipid composition have been studied in the red cells of five patients with various features of the hereditary stomatocytosis syndrome. Hemolysis was compensated in four patients, and only one patient was anemic. Cell NA+ was increased an average of 3 mueq per ml cells and cell K+ decreased 14 mueq per ml cells. Both active and passive fluxes of Na+ and K+ were increased ...

BINNION, PETER F., JAMES 0. DAVIS, TORREY C. BROWN, AND MICHAEL J. OLICHNEY. Mechanisms regulating aldosterone secretion during sodium depletion. Am. J. Physiol. 208(4) : 655-661. rg65.LSteroid secretion was studied in conscious dogs before and during 4 days of Na depletion. A threefold increase in aldosterone secretion occurred but corticosterone output was unchanged. Plasma renin was markedly...

To determine if salt tolerance of grafted cucumber can be associated with the accumulation of organic solutes and inorganic solutes in the leaves and roots, a salt-sensitive cucumber cultivar Jinchun No. 2 (Cucumis sativus L.) was grafted onto the commercial salt-tolerant bottle gourd cultivar Chaofeng 8848 (Lagenaria siceraria Standl.). Grafted and ungrafted plants were grown in hydroponic sys...

OBJECTIVE Na+ can be stored in muscle and skin without commensurate water accumulation. The aim of this study was to assess Na+ and H2O in muscle and skin with MRI in acute heart failure patients before and after diuretic treatment and in a healthy cohort. METHODS Nine patients (mean age 78 years; range 58-87) and nine age and gender-matched controls were studied. They underwent 23Na/1H-MRI a...

Zeolites A and X were co-crystallized in controlled ratios from one synthesis gel. With increasing potassium content of the synthesis gel or increasing proportion of Na-Y seeds in a mixture of Na-Y and Na-A seeds, the ratio of zeolite X to zeolite A in the synthesis product increased.