Document Detail


Promotion by gibberellic Acid of polyamine biosynthesis in internodes of light-grown dwarf peas.
MedLine Citation:
PMID:  16662137     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
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.
Authors:
Y R Dai; R Kaur-Sawhney; A W Galston
Related Documents :
16664247 - Photocontrol of peanut (arachis hypogaea l.) embryo and ovule development in vitro.
12428007 - Mutations in the gravity persistence signal loci in arabidopsis disrupt the perception ...
8931387 - Red light-induced appearance of phosphotyrosine-like epitopes on nuclear proteins from ...
22427957 - Light-induced responses of slow oscillatory neurons of the rat olivary pretectal nucleus.
24591587 - Actin-dependent plastid movement is required for motive force generation in directional...
20567807 - Spatially valid proprioceptive cues improve the detection of a visual stimulus.
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Plant physiology     Volume:  69     ISSN:  0032-0889     ISO Abbreviation:  Plant Physiol.     Publication Date:  1982 Jan 
Date Detail:
Created Date:  2010-06-29     Completed Date:  2010-06-29     Revised Date:  2010-09-14    
Medline Journal Info:
Nlm Unique ID:  0401224     Medline TA:  Plant Physiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  103-6     Citation Subset:  -    
Affiliation:
Department of Biology, Yale University, New Haven, Connecticut 06511.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Comments/Corrections

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Growth and Metabolic Activity of Lemon Juice Vesicle Explants in Vitro.
Next Document:  Effects of Iron and Oxygen on Chlorophyll Biosynthesis : I. IN VIVO OBSERVATIONS ON IRON AND OXYGEN-...