The respiratory tract contains numerous antimicrobial factors necessary for normal innate pulmonary defense. Although many of these molecules reside in airway surface liquid (ASL) simultaneously, little information exists concerning antagonistic, additive, or synergistic interactions. Since both cationic lysozyme and anionic antimicrobial peptides (AP) are found in high concentrations in ASL, t...

1. In the presence of 0.05 per cent dextrose the respiration of Aspergillus niger is increased by NaCl in concentrations of 0.25 to 0.5M, and by 0.5M CaCl(2). 2. Stronger concentrations, as 2M NaCl and 1.25M CaCl(2), decrease the respiration. The decrease in the higher concentrations is probably an osmotic effect of these salts. 3. A mixture of 19 cc. of NaCl and 1 cc. of CaCl(2) (both 0.5M) sh...

Among genetically hypertension-prone rats, dietary sodium (chloride) was demonstrably hypertensinogenic and potassium (chloride) antihypertensinogenic. On diets containing the same NaCl but different KCl concentrations, mean blood pressure was greater in rats receiving less dietary potassium, i.e., diets with a higher Na/K molar ratio. On diets with different absolute concentrations of NaCl and...

Two polysaccharide fractions isolated from Hypnea musciformis after room temperature- and hot water extraction, soluble after KCl precipitation of the more abundant carrageenans, were subfractionated by ion-exchange chromatography eluting with increasing concentrations of NaCl. The lowest NaCl concentration (0.2M) eluted agarans. The dl-hybrids (or mixtures) eluted at intermediate concentration...

Plasma membrane H+-ATPase is a major integral membrane protein with a role in various physiological processes including abiotic stress response. To study the effect of NaCl on the expression pattern of a gene encoding the plasma membrane H+-ATPase, an experiment was carried out in a completely random design with three replications. A pair of specific primers was designed based on the sequence o...

organic compost can reduce various plant stresses, because of its porous structure, high water storage capacity, and existence of some substances resembling hormones and plant growth regulators. this study was performed to investigate interactions of different levels of vermicompost extract and salinity stress on morphological characteristics of bean seedlings. the experiment was conducted in c...

Hybrid populations (F3) derived from cross between four moderate salt-resistant spring wheat (Triticum aestivum L.) were assessed for transgressive segregation of salt-tolerant genotypes allowing germination and emergence at 350 mM NaCl for 30 days. The achieved Selection intensity was the order of 0.24-0.27 in these segregation populations (22-25 seedlings from 9000 seeds). Assessment of trans...