Entry of organic acid anions into roots.

Proceedings of the National Academy of Sciences of the United States of America ·Vol. 65 ·No. 1 ·1970-01-00 ·Pages 176-83

Jackson PC, Taylor JM, Hendricks SB

Abstract

Entry of formate, acetate, succinate, and salts of several other organic acids into barley roots takes place chiefly as ions from solutions at pH 5 to 7. The results are in accord with entry of the organic acid predominantly at pH 5 as ions through hydrophylic regions of the limiting membranes rather than by distribution of the undissociated acid to lipid-rich regions, as has previously been held. These results with a plant tissue parallel observations of others indicative of similar hydrophylic properties of membranes from animals relative to transfer of ions and small nonelectrolytes.

MeSH Terms

Acetates/metabolism Alanine/metabolism Aspartic Acid/metabolism Benzoates/metabolism Buffers Carbon Isotopes Cell Membrane Permeability Chlorides/metabolism Citrates/metabolism Edible Grain/metabolism Formates/metabolism Glutamates/metabolism Hydrogen-Ion Concentration Kinetics Propionates/metabolism Seeds Succinates/metabolism

Chemicals

Acetates Benzoates Buffers Carbon Isotopes Chlorides Citrates Formates Glutamates Propionates Succinates Aspartic Acid Alanine

Authors & Affiliations

3 authors, click to expand affiliations / ORCID

Jackson P C

Taylor J M

Hendricks S B

References (9)

9 references, click to expand

THE SITES OF ORTHOPHOSPHATE UPTAKE BY BARLEY ROOTS.
Proc Natl Acad Sci U S A. 1957 Jun 15;43(6):496-506 PMID: 16590044
[The permeability of erythrocyte membranes for organic anions. On the problem of diffusion through the pores].
Pflugers Arch Gesamte Physiol Menschen Tiere. 1960;271:378-88 PMID: 13827993
The contributions of diffusion and flow to the passage of D2O through living membranes; effect of neurohypophyseal hormone on isolated anuran skin.
Acta Physiol Scand. 1953 Mar 31;28(1):60-76 PMID: 13065150
Biological membranes behave as non-porous polymeric sheets with respect to the diffusion of non-electrolytes.
Nature. 1969 Oct 18;224(5216):240-3 PMID: 5344600
An analysis of pore size in excitable membranes.
J Gen Physiol. 1960 May;43:105-17 PMID: 14425197
Compartmentation of Organic Acids in Corn Roots II. The Cytoplasmic Pool of Malic Acid.
Plant Physiol. 1966 Apr;41(4):713-7 PMID: 16656310
Characterization of biological membranes by equivalent pores.
J Gen Physiol. 1968 May;51(5):Suppl:335S+ PMID: 5659041
Equivalent pore radius of the axolemma of resting and stimulated squid axons.
J Gen Physiol. 1968 May;51(5):Suppl:81S+ PMID: 5654761
Cation-anion balance during potassium and sodium absorption by barley roots.
J Gen Physiol. 1963 Jan;46:369-86 PMID: 13964256

Article Info

Journal

Proceedings of the National Academy of Sciences of the United States of America

Abbr.

Proc Natl Acad Sci U S A

ISSN

0027-8424

DOI

10.1073/pnas.65.1.176

Published

1970-01-00

Pages

176-83

Language

English

Region

United States

NLM ID

7505876

PMCID

PMC286207

Subset

External Links

PubMed source DOI: 10.1073/pnas.65.1.176 PMC Full Text View journal details

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