To further study mechanisms of coping with osmotic stress-low water activity, mutants of Staphylococcus aureus with transposon Tn917-lacZ-induced NaCl sensitivity were selected for impaired ability to grow on solid defined medium containing 2 M NaCl. Southern hybridization experiments showed that NaCl-sensitive mutants had a single copy of the transposon inserted into a DNA fragment of the same...

Both, Haloferax mediterranei and Haloferax volcanii membranes contain ATPases which are capable of hydrolyzing ATP in presence of Mg2+ or Mn2+. The ATPases require high con­ centrations of NaCl, a pH value of 9, and high temperatures up to 60 °C. Free manganese ions inhibited the enzyme activity of either ATPase. The ATPases of Hf. mediterranei and Hf. vol­ canii, respectively, show different s...

Experiments were performed to examine the contribution of arterial baroreceptors to long-term regulation of mean arterial pressure (MAP) during changes in dietary salt intake. Normotensive Sprague-Dawley rats were subjected to either sinoaortic denervation (SAD; n= 8) or Sham surgery ( n = 6) and instrumented 1 wk later with radiotelemetry transmitters for continuous minute-to-minute monitoring...

Present work was carried out to investigate the possible role of arbuscular mycorrhizal fungi (AMF) in mitigating salinity-induced alterations in Brassica juncea L. Exposure to NaCl stress altered the morphological, physio-biochemical attributes, antioxidant activity, secondary metabolites and phytohormones in the mustard seedlings. The growth and biomass yield, leaf water content, and total ch...

We examined the consequences of genetic susceptibility or resistance to NaCl-induced hypertension and of prior salt loading (high or low NaCl intake) on the responses of isolated perfused Dahl salt-sensitive (DS) and Dahl salt-resistant rat (DR) kidneys to atriopeptin II. Atriopeptin II increased the glomerular filtration rate only in kidneys from high NaCl-fed rats, irrespective of their DS or...

We studied the effects of regular diet (0.35% NaCl/1.1% potassium), high sodium diet (4% NaCl/0.75% potassium), or high sodium and high potassium diet (4% NaCl/2.11% potassium) on blood pressure, plasma renin activity, renal and cerebrovascular lesions, and incidence of stroke and mortality in male stroke-prone spontaneously hypertensive rats (SHRSP). In the first 4 weeks, the rise in blood pre...

In this study, crystallization phenomena were investigated by real-time in situ observation of seeded droplets under evaporation using a self-developed hot-stage platform. Ternary solutions at eutonic conditions 25 °C for the following systems: NaCl–KCl–H2O, NaCl–CaSO4–H2O, and NaCl–Na2SO4–H2O. Evidence epitaxial growth was found aqueous NaCl–KCl NaCl–Na2SO4. Sodium chloride nucleated grew epit...

The present work has been conducted to study the impact of Zn (20 and 200 μM) or Ni (1 100 on growth, metabolic activities, osmotic pressure heavy metal wheat cultivar (cv. Gimiza 11) under salt stress conditions. Harvest index was significantly decreased by 75% at -0.3 MPa -1.2 53%. Length root, stem spike, leaf area were slightly reduced up -0.9 NaCl level, after that a significant reduction ...

The spontaneously hypertensive rat (SHR) of Okamoto and Aoki (4) develops significant hypertension without added dietary salt. Many patients with hypertension have little or no alteration in blood pressure from increments or decrements of salt intake. Such observations have led to a widespread belief that dietary NaCl is important in hypertensives only if blood pressure changes are observed aft...