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PMID: 16661931 Published · ppublish English Journal Article

Inhibition of anion transport in corn root protoplasts.

Plant physiology ·Vol. 68 ·No. 2 ·1981-08-00 ·Pages 435-8

Lin W

Abstract

The effects of several amino-reactive disulfonic stilbene derivatives and N-(4-azido-2-nitrophenyl)-2-aminoethylsulfonate on Cl(-), SO(4) (2-), and inorganic phosphate (Pi) uptake in protoplasts isolated from corn root tissue were studied. 4-Acetamido-4'-isothiocyano-2,2'-stilbenedisulfonic acid, 4,4'-diisothiocyano-2,2'-stilbenedisulfonic acid, 4,4'-diamino-2,2'-stilbenedisulfonic acid, and NAP-taurine inhibited Cl(-) and SO(4) (2-) but not Pi and K(+) uptake in corn root protoplasts; whereas mersalyl inhibited Pi but not Cl(-) or SO(4) (2-) uptake. The rate of uptake of all anions decreased with increasing external pH. In addition, these reagents markedly inhibited plasmalemma ATPase activity isolated from corn root tissue. Excised root segments were less sensitive to Cl(-) and SO(4) (2-) transport inhibitors.

Authors & Affiliations
1 authors, click to expand affiliations / ORCID
Lin W
Central Research and Development Department, Experimental Station, E. I. du Pont de Nemours and Company, Wilmington, Delaware 19801.
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Article Info
Journal
Plant physiology
Abbr.
Plant Physiol
ISSN
0032-0889
DOI
10.1104/pp.68.2.435
Published
1981-08-00
Pages
435-8
Language
English
Region
United States
NLM ID
0401224
PMCID
PMC427505
External Links
PubMed source DOI: 10.1104/pp.68.2.435 PMC Full Text View journal details
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