Document Detail

Increases in jasmonic acid caused by indole-3-acetic acid and auxin herbicides in cleavers (Galium aparine).
MedLine Citation:
PMID:  15310070     Owner:  NLM     Status:  MEDLINE    
The effects of indole-3-acetic acid and auxin herbicides on endogenous jasmonic acid (JA) concentrations were studied in relation to changes in ethylene and abscisic acid (ABA) levels in cleavers (Galium aparine). When plants were root-treated with increasing concentrations of indole-3-acetic acid (IAA), ethylene biosynthesis was stimulated in response to the accumulation of endogenous IAA in the shoot tissue. Within 25h of treatment, stimulated ethylene formation was accompanied by increases in immunoreactive concentrations of JA and ABA, which reached maxima of 4.5-fold and 26-fold of the control, respectively, at 100 microM of applied IAA. Corresponding effects were obtained using synthetic auxins and when the ethylene-releasing compound ethephon was applied exogenously. This represents the first report, to our knowledge, of an auxin-mediated increase in JA levels. The increase in JA may be triggered by ethylene.
Klaus Grossmann; Cindy Rosenthal; Jacek Kwiatkowski
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of plant physiology     Volume:  161     ISSN:  0176-1617     ISO Abbreviation:  J. Plant Physiol.     Publication Date:  2004 Jul 
Date Detail:
Created Date:  2004-08-16     Completed Date:  2004-11-04     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  9882059     Medline TA:  J Plant Physiol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  809-14     Citation Subset:  IM    
BASFAgricultural Center Limburgerhof, Limburgerhof, Germany.
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MeSH Terms
Abscisic Acid / biosynthesis
Cyclopentanes / metabolism*
Ethylenes / biosynthesis
Galium / drug effects*,  metabolism
Herbicides / pharmacology*
Indoleacetic Acids / metabolism,  pharmacology*
Lyases / metabolism
Organophosphorus Compounds / pharmacology
Plant Growth Regulators / pharmacology*
Reg. No./Substance:
0/Cyclopentanes; 0/Ethylenes; 0/Herbicides; 0/Indoleacetic Acids; 0/Organophosphorus Compounds; 0/Oxylipins; 0/Plant Growth Regulators; 16672-87-0/ethephon; 21293-29-8/Abscisic Acid; 6894-38-8/jasmonic acid; 74-85-1/ethylene; 87-51-4/indoleacetic acid; EC 4.-/Lyases; EC synthase

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