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
. 1982 Jan;69(1):103-6.
doi: 10.1104/pp.69.1.103.

Promotion by gibberellic Acid of polyamine biosynthesis in internodes of light-grown dwarf peas

Y R Dai  1 , R Kaur-Sawhney, A W Galston
Affiliations

Promotion by gibberellic Acid of polyamine biosynthesis in internodes of light-grown dwarf peas

Y R Dai et al. Plant Physiol. 1982 Jan.

Abstract

When gibberellic acid (GA(3); 5-35 micrograms per milliliter) is sprayed on 9-day-old light-grown dwarf Progress pea (Pisum sativum) seedlings, it causes a marked increase in the activity of arginine decarboxylase (ADC; EC 4.1.1.9) in the fourth internodes. The titer of putrescine and spermidine, polyamines produced indirectly as a result of ADC action, also rises markedly, paralleling the effect of GA(3) on internode growth. Ammonium (5-hydroxycarvacryl) trimethyl chloride piperidine carboxylate (AMO-1618; 100-200 micrograms per milliliter) causes changes in the reverse direction for enzyme activity, polyamine content, and growth. GA(3) also reverses the red-light-induced inhibition of ADC activity in etiolated Alaska pea epicotyls; this is additional evidence for gibberellin-light interaction in the control of polyamine biosynthesis. The enzyme ornithine decarboxylase (ODC; EC 4.1.1.17), an alternate source of putrescine arising from arginine, is not increased by GA(3) or by AMO-1618.The results support the hypothesis that ADC and polyamine content are important regulators of plant growth.

PubMed Disclaimer

References

    1. Plant Physiol. 1959 Jul;34(4):457-60 - PubMed
    1. Proc Natl Acad Sci U S A. 1975 Aug;72(8):3087-91 - PubMed
    1. J Biol Chem. 1968 Apr 25;243(8):1671-7 - PubMed
    1. Proc Natl Acad Sci U S A. 1956 Nov;42(11):841-8 - PubMed
    1. Plant Physiol. 1968 Apr;43(4):629-34 - PubMed