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2 edition of effects of pH and carbon dioxide on ion uptake in barley roots. found in the catalog.

effects of pH and carbon dioxide on ion uptake in barley roots.

Shou-Yong Ng

effects of pH and carbon dioxide on ion uptake in barley roots.

by Shou-Yong Ng

  • 73 Want to read
  • 15 Currently reading

Published by University of Birmingham in Birmingham .
Written in English


Edition Notes

Thesis (M.Sc.)- Univ. of Birmingham, Dept. of Botany.

ID Numbers
Open LibraryOL19763178M

Carbon Dioxide, Alkalinity and pH Reading: Libes, Chap Seawater pH – T and P Effects For temperatures T 1 and T 2: pH T2 = pH T1 + (T 2 –T 1) attributed to the uptake of anthropogenic carbon between and Sabine et al. • High values at equator (esp. in the Pacific) and along west coasts. Ocean Acidification And Its Effect On The Oceans Words | 7 Pages. The mid to late twentieth century and the twenty first century have been devastating to the world’s oceans in terms of pollution, overfishing, ice caps melting, destruction of habitat, and increasing amounts carbon dioxide being dissolved into the water.

  The effects of iron deficiency on the composition of the xylem sap and leaf apoplastic fluid have been characterized in sugar beet (Beta vulgaris Monohil hybrid). pH was estimated from direct measurements in apoplastic fluid and xylem sap obtained by centrifugation and by fluorescence of leaves incubated with 5-carboxyfluorescein and fluorescein isothiocyanate-dextran. 1 A universal model for carbon dioxide uptake by plants 2 3 Han Wang1,2*, I. Colin Prentice1,2,3, William K. Cornwell4, Trevor F. Keenan2, Tyler W. Davis3,5, Ian J. 4 Wright2, Bradley J. Evans2,6 and Changhui Peng1,7* 5 6 1 State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, College of Forestry, Northwest A & F University, Yangling , China 7Cited by: 4.

ments revealed that pH values in the range of 8 to 9 were important for determining the free CO2concentrations in the medium. With higher pHvalues, additional pH effects were observed involving a decrease in the relative high affinity oflow Cadapted algae to free CO2. The carbon uptake rate by high Cadaptedalgae after transfer tolowfree Cited by: BassiriRad H, Caldwell MM, Bilbrough C () Effects of soil temperature and nitrogen status on kinetics of 15 NO 3 − uptake by roots of field-grown Agropyron desertorum (Fisch. ex Link) Schult. New Phytol – CrossRef Google ScholarCited by:


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Effects of pH and carbon dioxide on ion uptake in barley roots by Shou-Yong Ng Download PDF EPUB FB2

The effects of carbon dioxide concentrations up to 8 per cent in air on uptake of potassium and chloride at two pH levels, nominally pH 6 and 8, werestudied.

In all experiments, enhanced uptake of potassium occurred at the higher pH level with carbon dioxidefree air, but chloride uptake was generally by: 4.

Effects of several organic acids on ion uptake and retention and on respiration in barley roots having low and high KCl contents were assayed by measurements of K(+), Na(+), Ca(2+), Cl(-), and oxygen uptake.

Organic acids with high pK(a) values increase the permeability of roots to ions and decrease. Barley roots contain a CO 2 sensitive respiratory fraction which is inhibited in 50 per cent CO 2 and is partially restored upon subsequent exposure to air.

The residual O 2 consumption occurring at CO 2 concentrations between 50 per cent and 95 per cent amounts to about 40 per cent of the O 2 uptake in air and can support K + uptake for a limited time at a rate equal to or higher than occurs in by: 5.

The uptake of Cl by excised roots of barley (Hordeum vulgare L.) from KC1 solution maintained at high pH was markedly reduced by high rates of aeration, whereas K uptake was scarcely affected. Effects of Various Concentrations of Carbon Dioxide on Respiration and Potassium Uptake in Barley Roots Article in Physiologia Plantarum 21(1) - April with 7 Reads.

Effects of several organic acids on ion uptake and retention and on respiration in barley roots having low and high KCl contents were assayed by measurements of K+, Na+, Ca2+, Cl−, and oxygen uptake. Organic acids with high pK a values increase the permeability of roots to ions and decrease respiration when present in sufficient concentrations at pH 5 but have no inhibitory effects at pH by: This idea is apparently supported by the fact that carbon dioxide increases the hydrogen ion activity of the expressed plant juice.

The fact that the hydrogen ion activity of the cell sap within The studies on the effect of carbon dioxide reported in this Roots pH of expressed juice Normal CO&mated * Fe availability is dictated by the soil redox potential and pH.

In soils that are aerobic or of higher pH, Fe is readily oxidized, and is predominately in the form of insoluble ferric oxides.

At lower pH, the ferric Fe is freed from the oxide, and becomes more available for uptake by by: Effect of Bicarbonate Ion on the Respiration of Excised Roots Effect of Bicarbonate Ion on the Respiration of Excised Roots Gene W.

Miller and D. Wynne Thorne carbonate ion on chlorosis-susceptible plants further suggests that the principal bicarbonate effect may be on iron enzyme systems and that copper systems would be affected to a much lesser degree.

Carbon Dioxide, Alkalinity and pH Reading: Libes, Chap pp. Seawater pH – T and P Effects For temperatures T 1 and T 2: pH T2 = pH T1 + (T 2 – T 1) Increased P causes pH to attributed to the uptake of anthropogenic carbon between and Sabine et al.

• High values at equator (esp. in the Pacific) and. NON-METABOLIC UPTAKE OF IONS BY BARLEY ROOTS1 LOUIS JACOBSON, RAYMOND J. HANNAPEL AND DAVID P.

MOORE DEPARTMENT OF SOILS AND PLANT NUTRITION, COLLEGE OF AGRICULTURE, UNIVERSITY OF CALIFORNIA, BERKELEY, CALIFORNIA In dealing with the mechanism of absorption, a major concern is the amount and behavior of the nonmetabolic uptake.

The effect of pH and Ca2+ on net NO3- uptake, influx, and efflux by intact roots of barley (Hordeum vulgare L.) seedlings was studied.

Seedlings were induced with NO3- or NO Net NO3- uptake and efflux, respectively, were determined by following its depletion from, and accumulation in, Cited by: Interactions of pH, Carbon Dioxide, Alkalinity and Hardness in Fish Ponds William A.

Wurts and Robert M. Durborow* Water quality in fish ponds is af-fected by the interactions of sev-eral chemical components. Carbon dioxide, pH, alkalinity and hard-ness are interrelated and can have profound effects on pond produc-tivity, the level of stress File Size: 73KB.

Introduction. Many efforts have been made in the past to understand the water balance of plants in terms of a regulation of transpiration, i.e. of how stomatal conductance would be affected by water status, light intensity, nutrition, and other factors and how this would change under stress conditions such as during deficits in water supply (Cowan, ; Schulze, ; Kramer and Boyer, Cited by: Effects of powdery mildew disease on uptake and metabolism of nitrogen by roots of infected barley D.

\VALTERS and P. AYRES Department ofBiological Sciences, University of Lancaster, Lancaster LA1 4TQ, U.K. (Aucptedfor publication Junc ) A study was made of the effects of powdery mildew disease on the uptake and metabolism of nitrogen by roots of barley plants grown and infected in Cited by: Effect of changes in the pH and carbon dioxide evolution rate on the measured respiratory quotient of fermentations.

Patrick N. Royce. The total concentration of dissolved carbon dioxide in fermentation broths is one to two orders of magnitude greater than that of oxygen for pH > The rate of change in this total concentration can be Cited by: Abstract.

The effect of HCO 3-on ion absorption by young corn roots was studied in conditions allowing the independent control of both the pH of uptake solution and the CO 2 partial pressure in air bubbled through the solution.

The surface pH shift in the vicinity of the outer surface of the plasmalemma induced by active H + excretion was estimated using the initial uptake rate of acetic acid Cited by: Absorption of carbon dioxide by roots is connected with,9-carboxylation of keto acids and with the movement of dicarboxylic acid to leaves.

Pot experiments with four crops where the cu-labeled sodium carbonate was used, showed that the carbon of soil carbonate can be taken up by crop plants only when the pH of the soil showed an. The pH of saturated carbon dioxide solutions varies from at kPa (1 atm) to at kPa ( atm).

A solid hydrate, COH2O, separates from aqueous solutions of carbon dioxide that are chilled at elevated pressures.

Carbon dioxide shows a self-buffering as it reaches neutral pH File Size: KB. Rhizosphere pH is the consequence of numerous, complex processes and is a key factor of biogeochemistry at the soil-root interface. This work aimed at evaluating the impact of nutrient root absorption on rhizosphere pH using a mechanistic model formalizing major nutrient cation and anion transport, under the influence of concentration, electric potential gradients and of : Jean-Marc Custos, Christian Moyne, Thibault Sterckeman.

effects of alkali soils to the influence of sodium and other cations, did note that the growth of seedling radish roots was inhibited much more by NaHC03 than by NaCl.

As against evidence of growth-inhibition, Hoagland and Broyer, in their studies of salt uptake by excised barley roots, did not find any effect of carbon dioxide.Jacobson L. Carbon Dioxide Fixation and Ion Absorption in Barley Roots. Plant Physiol. May; 30 (3)– Jacobson L, Overstreet R, Carlson RM, Chastain JA.

The Effect of pH and Temperature on the Absorption Of Potassium and Bromide by Barley Roots. Plant Physiol. Nov; 32 (6)–carbon dioxide in particulate preparations from barley roots.

Plant Physiol. Jacobson, L. Carbon dioxide fixation and ion ab-sorption in barley roots. Plant Physiol. ? 5. Macfarlane, M. G. and Spencer, A. G. Changes in the water, sodium and potassium content of rat-liver mitochondria during metabolism.

Biochem.