Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 1977 Mar;59(3):395-7.
doi: 10.1104/pp.59.3.395.

Rapid Hormone-induced Hyperpolarization of the Oat Coleoptile Transmembrane Potential

R E Cleland  1 , H B Prins, J R Harper, N Higinbotham
Affiliations

Rapid Hormone-induced Hyperpolarization of the Oat Coleoptile Transmembrane Potential

R E Cleland et al. Plant Physiol. 1977 Mar.

Abstract

The effects of the plant growth substances indoleacetic acid (IAA) and fusicoccin on the transmembrane potential of Avena coleoptile cells (at 27-29 C) were studied. Fusicoccin caused hyperpolarization of the membrane potential which started after a lag of less than 20 seconds, and which on average reached -49 mv at an external K(+) concentration of 1 mm and -75 mv at 0.1 mm K(+). IAA caused a hyperpolarization of -25 mv starting after a lag of 7 to 8 minutes. These results suggest that fusicoccin and IAA both activate electrogenic H(+) extrusion.

PubMed Disclaimer

References

    1. Plant Physiol. 1976 Feb;57(2):123-8 - PubMed
    1. Biochem Biophys Res Commun. 1976 Mar 22;69(2):333-8 - PubMed
    1. Plant Physiol. 1976 Aug;58(2):210-3 - PubMed
    1. Plant Physiol. 1970 Aug;46(2):250-3 - PubMed
    1. Br Dent J. 1978 Jan 3;144(1):7-10 - PubMed

LinkOut - more resources