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
. 1969 Feb;44(2):251-4.
doi: 10.1104/pp.44.2.251.

Kinetics of abscission in the bean petiole explant

R K Dela Fuente  1 , A C Leopold
Affiliations

Kinetics of abscission in the bean petiole explant

R K Dela Fuente et al. Plant Physiol. 1969 Feb.

Abstract

The progress of bean petiole abscission has been followed using quantitative measurements of the mechanical force required to break explants at the separation zone. It is found that the shortest time for a measurable effect of ethylene (1 ppm) in stimulating the development of frangibility is about 1 hr. Removal of the ethylene is followed by a return to the endogenous rate of weakening, the slower rate being established in 1 hr. Application of the inhibitor cycloheximide leads to a cessation of abscission development within one-half hr. As in the stimulations of certain plant processes with auxins, gibberellins, and cytokinins. ethylene stimulation of abscission requires the continuous presence of the regulator.

PubMed Disclaimer

References

    1. Plant Physiol. 1949 Jul;24(3):537-9 - PubMed
    1. Plant Physiol. 1967 Oct;42(10):1351-6 - PubMed
    1. Science. 1966 May 6;152(3723):721-31 - PubMed
    1. Plant Physiol. 1968 Sep;43(9 Pt B):1496-502 - PubMed
    1. Plant Physiol. 1968 Sep;43(9 Pt B):1577-86 - PubMed