scholarly journals Effects of Sodium Chloride on the Hydraulic Conductivity of Soybean Root Systems

1989 ◽  
Vol 91 (4) ◽  
pp. 1262-1265 ◽  
Author(s):  
Robert J. Joly
Keyword(s):  
Sodium Chloride ◽  
Hydraulic Conductivity ◽  
Root Systems ◽  
Soybean Root

A biochemical study of BAS 517 using excised corn and soybean root systems

Weed Science ◽  
1999 ◽  
Vol 47 (1) ◽  
pp. 28-36
Author(s):  
Hwei-Yiing Li ◽  
Chester L. Foy
Keyword(s):  
Root System ◽  
Biochemical Study ◽  
Lipid Fraction ◽  
Root Systems ◽  
Water Soluble ◽  
Root Tips ◽  
Soybean Root ◽  
Corn Roots ◽  
Tracer Techniques ◽  
High Degree

The mode of action of BAS 517 in a susceptible plant species, corn, was investigated using an excised root system and14C-tracer techniques. The root system of a tolerant species, soybean, was used for comparison. When UL-14C- glucose was used as a precursor,14C incorporation into lipids was reduced in BAS 517-treated corn roots, although14C incorporation from UL-14C-glucose into lipids was relatively low. Inhibition of14C incorporation into water-soluble compounds was not definite because of a high degree of variability. Using14C-acetate as a precursor, 49, 43, and 34% of the recovered radioactivity was found in the lipid fractions of root tips treated with 0, 1.0, and 10 μM BAS 517, respectively. In nontreated soybean root tips, 47% of the recovered radioactivity was found in the lipid fraction compared to 49% in root tips treated with 10 μM BAS 517. Further analysis of lipids showed that BAS 517 inhibited the incorporation of14C from14C-acetate into phosphatidylethanolamine, a phospholipid, whereas the labeling of sterols in treated corn roots was not adversely affected. Acetyl CoA carboxylase extracted from root systems of corn and soybean showed different sensitivity to BAS 517, suggesting its role as the herbicide target site and as a basis for the selectivity.

scholarly journals Penetration of Soybean Root Systems by Abscisic Acid Isomers

1982 ◽  
Vol 69 (6) ◽  
pp. 1350-1352 ◽  
Author(s):  
Albert H. Markhart
Keyword(s):  
Abscisic Acid ◽  
Root Systems ◽  
Soybean Root

scholarly journals Finite element modeling and experimental investigation of infiltration of sodium chloride solution into nonviable liver tissue

Medicina ◽  
2007 ◽  
Vol 43 (5) ◽  
pp. 399 ◽  
Author(s):  
Rimantas Barauskas ◽  
Antanas Gulbinas ◽  
Giedrius Barauskas
Keyword(s):  
Finite Element ◽  
Sodium Chloride ◽  
Hydraulic Conductivity ◽  
Liver Tissue ◽  
Chloride Solution ◽  
Sodium Chloride Solution ◽  
Element Model ◽  
Computational Environment ◽  
Complex Models ◽  
Model Equations

The aim of this study was to establish a mathematical model of the infiltration of sodium chloride solution into cadaveric liver tissue. Methods. The time law of the flow of the infiltrated fluid at every node of the finite element model was obtained in terms of Darcy’s velocity, pressure, and volumetric saturation fraction. The model equations interpret the liver tissue as a porous medium taking into account the hydraulic conductivity, capacity, and absorption mechanisms. Capability of the cadaveric liver tissue to absorb the fluid is taken into account by means of the nonlinear relationship of hydraulic capacity and absorption coefficients against the volumetric saturation fraction. To explain certain inadequacies between the computational model and experiment, the idealized models of empty blood vessels in the vicinity of the injection probe have been used. The model has been implemented in computational environment COMSOL Multiphysics. Experimental procedures were performed to analyze fluid infiltration and to calculate volume of fluid, which might be injected into certain volume of nonviable liver tissue. Results. The necessary physical constants of hydraulic conductivity, capacity, and absorp- tion of liver tissue have been determined by comparing the simulation results against the experimental data. The congruence of the modeling results against the experiment may be regarded as satisfactory. Conclusion. The established model analyses distribution of injected solution taking into account the hydraulic conductivity, capacity, and absorption mechanisms of liver tissue. The obtained results are of importance developing complex models of electro-thermal heating coupled with heat advection by means of infiltrated sodium chloride solution.

Effects of osmotic gradients on water and solute transport: in vivo studies in rat duodenum and ileum.

1979 ◽  
Vol 237 (4) ◽  
pp. E389 ◽  
Author(s):  
D L Miller ◽  
S A Hamburger ◽  
H P Schedl
Keyword(s):  
Sodium Chloride ◽  
Hydraulic Conductivity ◽  
In Vivo Studies ◽  
Sodium Absorption ◽  
Solute Movement ◽  
Rat Duodenum ◽  
Water Secretion ◽  
Water And Solute Transport

We examined effects of luminal osmolality on net water and solute movements in rat duodenum and ileum. Solutions of sodium chloride (permeating solute) or mannitol (nonpermeating solute) at hypo-, iso-, or hyperosmotic concentrations were recirculated through in situ segments. Luminal osmolality increased towards that of plasma with hyposmotic solutions of both solutes. With isosmotic solutions, luminal osmolality did not change with sodium chloride, but increased with mannitol. With hyperosmotic solutions, luminal osmolality always decreased toward that of plasma with sodium chloride; with mannitol, however, decreases were significant only when initial concentrations were above 400 mosmol/kg. The decrease in osmolality of hyperosmotic sodium chloride resulted from sodium absorption and water secretion. Thus, both hypo- and hyperosmotic solutions of sodium chloride adjusted toward isomolality with plasma by the usual mechanisms of water and solute movement. With mannitol, however, osmotic adjustment of hypertonic luminal contents was restricted or even absent due to movement of sodium down its concentration gradient and reduced hydraulic conductivity of the gut.

scholarly journals Impact of treated wastewater on growth, respiration and hydraulic conductivity of citrus root systems in light and heavy soils

2016 ◽  
Vol 36 (6) ◽  
pp. 770-785 ◽  
Author(s):  
Indira Paudel ◽  
Shabtai Cohen ◽  
Avi Shaviv ◽  
Asher Bar-Tal ◽  
Nirit Bernstein ◽  
...  
Keyword(s):  
Hydraulic Conductivity ◽  
Root Systems ◽  
Treated Wastewater ◽  
Growth Respiration ◽  
Citrus Root

Measuring the Hydraulic Conductivity of Grass Root Systems

2020 ◽  
Vol 5 (2) ◽  
Author(s):  
Atara Gal ◽  
Elisha Hendel ◽  
Zvi Peleg ◽  
Nimrod Schwartz ◽  
Nir Sade
Keyword(s):  
Hydraulic Conductivity ◽  
Root Systems ◽  
Grass Root
Sign in / Sign up

Export Citation Format

Share Document