Inhibition of ion accumulation in maize roots by abscisic acid

Dale L. Shaner; Stuart M. Mertz; Charles J. Arntzen

doi:10.1007/BF00385407

Inhibition of ion accumulation in maize roots by abscisic acid

Dale L. Shaner, Stuart M. Mertz, Charles J. Arntzen

Arizona State University

Research output: Contribution to journal › Article › peer-review

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Abstract

An inhibition of root growth, a decrease in the amount of potassium (as ⁸⁶Rb) and phosphate (³²P) accumulation by the root, and a partial depolarization of transmembrane electropotential were observed to develop with a similar time course and to a similar extent when intact maize (Zea mays L.) roots were treated with 10^-5 M abscisic acid (ABA). Potassium uptake was inhibited by ABA when excised, low-salt roots were bathed in KCl, KH₂PO₄, or K₂SO₄. ABA did not affect the ATP content of the tissues, the activity of isolated mitochondria, nor the activity of microsomal K⁺-stimulated ATPases.

Original language	English (US)
Pages (from-to)	79-90
Number of pages	12
Journal	Planta
Volume	122
Issue number	1
DOIs	https://doi.org/10.1007/BF00385407
State	Published - Jan 1975

ASJC Scopus subject areas

Genetics
Plant Science

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abstract = "An inhibition of root growth, a decrease in the amount of potassium (as 86Rb) and phosphate (32P) accumulation by the root, and a partial depolarization of transmembrane electropotential were observed to develop with a similar time course and to a similar extent when intact maize (Zea mays L.) roots were treated with 10-5 M abscisic acid (ABA). Potassium uptake was inhibited by ABA when excised, low-salt roots were bathed in KCl, KH2PO4, or K2SO4. ABA did not affect the ATP content of the tissues, the activity of isolated mitochondria, nor the activity of microsomal K+-stimulated ATPases.",

author = "Shaner, {Dale L.} and Mertz, {Stuart M.} and Arntzen, {Charles J.}",

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N2 - An inhibition of root growth, a decrease in the amount of potassium (as 86Rb) and phosphate (32P) accumulation by the root, and a partial depolarization of transmembrane electropotential were observed to develop with a similar time course and to a similar extent when intact maize (Zea mays L.) roots were treated with 10-5 M abscisic acid (ABA). Potassium uptake was inhibited by ABA when excised, low-salt roots were bathed in KCl, KH2PO4, or K2SO4. ABA did not affect the ATP content of the tissues, the activity of isolated mitochondria, nor the activity of microsomal K+-stimulated ATPases.

AB - An inhibition of root growth, a decrease in the amount of potassium (as 86Rb) and phosphate (32P) accumulation by the root, and a partial depolarization of transmembrane electropotential were observed to develop with a similar time course and to a similar extent when intact maize (Zea mays L.) roots were treated with 10-5 M abscisic acid (ABA). Potassium uptake was inhibited by ABA when excised, low-salt roots were bathed in KCl, KH2PO4, or K2SO4. ABA did not affect the ATP content of the tissues, the activity of isolated mitochondria, nor the activity of microsomal K+-stimulated ATPases.

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Inhibition of ion accumulation in maize roots by abscisic acid

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