| Measurement of the rates of oxindole-3-acetic acid turnover, and indole-3-acetic acid oxidation in Zea mays seedlings. | |
MedLine Citation:
|
PMID: 11539687 Owner: NASA Status: MEDLINE |
Abstract/OtherAbstract:
|
Oxindole-3-acetic acid is the principal catabolite of indole-3-acetic acid in Zea mays seedlings. In this paper measurements of the turnover of oxindole-3-acetic acid are presented and used to calculate the rate of indole-3-acetic acid oxidation. [3H]Oxindole-3-acetic acid was applied to the endosperm of Zea mays seedlings and allowed to equilibrate for 24 h before the start of the experiment. The subsequent decrease in its specific activity was used to calculate the turnover rate. The average half-life of oxindole-3-acetic acid in the shoots was found to be 30 h while that in the kernels had an average half-life of 35h. Using previously published values of the pool sizes of oxindole-3-acetic acid in shoots and kernels from seedlings of the same age and variety, and grown under the same conditions, the rate of indole-3-acetic acid oxidation was calculated to be 1.1 pmol plant-1 h-1 in the shoots and 7.1 pmol plant-1 h-1 in the kernels. |
Authors:
|
H M Nonhebel |
Related Documents
:
|
10223627 - Concentration and dispersal of a pseudo-nitzschia bloom in penn cove, washington, usa. 416207 - Effect of 1-(2,4-dichlorobenzyl)-indazole-3-carboxylic acid on sperm tails in rhesus mo... 8928637 - Effect of intravenously applied canrenoate on ampullar endolymphatic potential. 6607097 - Severe thrombocytopenia associated with acute folic acid deficiency and severe hemorrha... 19219867 - Synthesis of two bioactive natural products: fr252921 and pseudotrienic acid b. 10622107 - Effect of direct compression excipients on the stability of ascorbic acid (vitamin c) t... |
Publication Detail:
|
Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
|
Title: Journal of experimental botany Volume: 37 ISSN: 0022-0957 ISO Abbreviation: J. Exp. Bot. Publication Date: 1986 Nov |
Date Detail:
|
Created Date: 1997-10-10 Completed Date: 1997-10-10 Revised Date: 2007-11-14 |
Medline Journal Info:
|
Nlm Unique ID: 9882906 Medline TA: J Exp Bot Country: ENGLAND |
Other Details:
|
Languages: eng Pagination: 1691-7 Citation Subset: S |
Affiliation:
|
Department of Botany and Plant Pathology, Michigan State University, East Lansing 48824, USA. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Indoleacetic Acids
/
metabolism* Oxidation-Reduction Plant Growth Regulators / metabolism* Plant Shoots / metabolism Time Factors Zea mays / metabolism* |
| Grant Support | |
ID/Acronym/Agency:
|
ORD 30668/OR/ORS NIH HHS; PCM 8204017/PC/NCI NIH HHS |
| Chemical | |
Reg. No./Substance:
|
0/Indoleacetic Acids; 0/Plant Growth Regulators; 2971-31-5/2-oxindole-3-acetic acid; 87-51-4/indoleacetic acid |
| Investigator | |
Investigator/Affiliation:
|
R S Bandurski / MI St U, E Lansing |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Early Archean (3.3-billion to 3.5-billion-year-old) microfossils from Warrawoona Group, Australia.
Next Document: An evaluation of MES (2(N-Morpholino)ethanesulfonic acid) and Amberlite IRC-50 as pH buffers for nut...