scholarly journals Plant Response to Saline Substrates V. Chloride Regulation in the Individual Organs of Hordeum Vulgare During Treatment with Sodium Chloride

1965 ◽  
Vol 18 (3) ◽  
pp. 505 ◽  
Author(s):  
H Greenway ◽  
DA Thomas

This is a study on the regulation of chloride concentrations in H. vulgare at the early tillering stage, when grown on media of high sodium chloride concentration. 36CI was used during certain periods to determine retranslocation.

1962 ◽  
Vol 15 (1) ◽  
pp. 39 ◽  
Author(s):  
H Greenway

Young barley plants, Hordeum vulgare cv. Chevron, were subjected to a sodium chloride concentration of 100 m-equiv/l. In a "continued" treatment, the salinity stress was maintained for 15 days. In a "removed" treatment, sodium chloride was removed from the substrate after 5 days, and the subsequent response was studied over a period of 10 days.


1965 ◽  
Vol 18 (3) ◽  
pp. 525 ◽  
Author(s):  
H Greenway ◽  
A Gunn ◽  
MG Pitman ◽  
DA Thomas

This paper describes the effects of sodium chloride on H. vulgare during the whole of plant development. Rapid increases in sodium and chloride concentrations occurred during the early tillering, with little further change until grain formation. The net chloride and sodium intake did not change markedly during the major part of plant development, so that increases in sodium and chloride concentrations were prevented by the regulatory effect of rapid growth. During senescence the relative growth rate decreased and there were marked increases in chloride and sodium concentrations.


1994 ◽  
Vol 72 (6) ◽  
pp. 823-828 ◽  
Author(s):  
Shuhei Fujii ◽  
Johan A. Hellebust

The growth and osmoregulation of Boekelovia hooglandii Nicolai et Baas Becking (Chrysophyceae) was investigated as a function of salinity. This chromophyte microflagellate was found to be euryhaline and also to require sodium for growth. The optimum sodium chloride concentration for growth was 0.2–0.4 M, and growth was severely inhibited in media with sodium chloride concentrations above 1 M. Using gas chromatography – mass spectroscopy analysis of cell extracts, it was established that the alga contains D-mannitol, myo-inositol, as well as the inositol derivative, cyclohexanetetrol. The content of cyclohexanetetrol and mannitol increased with increased salinity, while the content of inositol remained almost constant. Potassium and magnesium were the major intracellular cations. However, the content of cations and amino acids showed only minor increases with salinity over a wide salinity range. The contents of cyclohexanetetrol and mannitol increased rapidly when cells were subjected to hypertonic shocks. It was concluded that B. hooglandii utilizes cyclohexanetetrol and mannitol as osmoregulatory substances. Key words: Boekelovia hooglandii, chromophyte, cyclohexanetetrol, euryhaline, D-mannitol, myo-inositol, osmoregulation, salinity.


1979 ◽  
Vol 41 (02) ◽  
pp. 329-336 ◽  
Author(s):  
Raymond R Schleef ◽  
Dianne M Kenney ◽  
David Shepro

SummaryConcentrations of sodium chloride up to 3 M increase the time necessary for the clot formation from Limulus amebocyte lysate (LAL) induced with endotoxin. Sodium chloride at a concentration of 4 M prevents clot formation by either precipitation or denaturation of procoagulase. The time necessary for the activation of procoagulase by endotoxin is increased by a change in the sodium chloride concentration from 0.15 M to 0.588 M. No effect on the proteolytic phase or the polymerization phase of the clotting reaction is detected by the increase in sodium chloride concentration from 0.15 M to 0.588 M. The authors conclude that increased sodium chloride concentrations may aid the isolation of procoagulase.


1977 ◽  
Vol 23 (7) ◽  
pp. 893-897 ◽  
Author(s):  
G. B. Patel ◽  
L. A. Roth

The effect of up to 263.7 mM sodium chloride on the growth and methane production by pure cultures of Methanospirillum hungatii GP1, Methanobacterium MOH, Methanobacterium thermoautotrophicum, and an unidentified methanogen was studied. Growth and methane production by M. hungatii GP1 were not affected up to 97.3 mM NaCl but there was some inhibition of growth at higher concentrations. Growth of Methanobacterium MOH was independent of sodium chloride concentration within the range investigated. For the unidentified methanogen, optimum growth and methane production occurred at 15.2 mM NaCl, while growth of M. thermoautotrophicum was not affected by sodium chloride concentrations up to 15.2 mM. Concentrations over 15.2 mM were inhibitory to these two organisms. The 15 mM sodium chloride concentration used by some investigators appears suitable for isolation and cultivation of methanogens since all the organisms tested in this study exhibited good growth and methane production at this salt concentration.


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