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. 1970 Jan;65(1):176-83.
doi: 10.1073/pnas.65.1.176.

Entry of organic acid anions into roots

P C Jackson, J M Taylor, S B Hendricks

Entry of organic acid anions into roots

P C Jackson et al. Proc Natl Acad Sci U S A. 1970 Jan.

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.

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