Effect of indole-3-acetic acid (iaa) on phosphorus metabolism in the avena coleoptile

ABSTRACT IT is generally believed that energy-rich phosphate compounds act as a store-house of energy for different reactions during growth. The auxin-induced stimulation of respiration is

presumed to be due to an increased availability of phosphate acceptors due to the rapid utilization of nucleotides during the growth process1–3. Rhodes and Ashworth4 have speculated on the

mechanism by which growth substances may be metabolized for the generation of energy-rich phosphate bonds, but an unequivocal demonstration of the stimulation of nucleotide synthesis is not

available. Ormrod and Williams5 and Key _et al._6 have recently observed increased phosphorylating activities in plants sprayed with 2,4-dichlorophenoxyacetic acid. Marre and Forti7 had

noted a rapid increase in high-energy phosphate level in auxin-treated pea internode segments during the first 30 min., followed by a decline. The method of estimation of adenosine

triphosphate (ATP) adopted by them, which involves the adsorption of adenine nucleotides on charcoal followed by elution with hydrochloric acid, has several limitations when applied to

tissue sections. Since numerous metabolic reactions go on in the cell at the same time, and a large number of them concern the participation of nucleotides, particularly reactions mediated

by the kinase type of enzyme, and the phosphate residues are transferred to a variety of substrates, estimation of the level of adenine nucleotides at any given time is not the true measure

of the total ATP formed during the experimental period. A more correct approach is to estimate the phosphate esterified to organic compounds including the nucleotides. Phosphate labelled

with phosphorus-32 may be conveniently used for this purpose and the present communication summarizes the findings of an investigation directed towards this objective. Access through your

institution Buy or subscribe This is a preview of subscription content, access via your institution ACCESS OPTIONS Access through your institution Subscribe to this journal Receive 51 print

issues and online access $199.00 per year only $3.90 per issue Learn more Buy this article * Purchase on SpringerLink * Instant access to full article PDF Buy now Prices may be subject to

local taxes which are calculated during checkout ADDITIONAL ACCESS OPTIONS: * Log in * Learn about institutional subscriptions * Read our FAQs * Contact customer support SIMILAR CONTENT

BEING VIEWED BY OTHERS EFFECTS OF EXOGENOUS GLYCINE BETAINE AND CYCLOLEUCINE ON PHOTOSYNTHETIC CAPACITY, AMINO ACID COMPOSITION, AND HORMONE METABOLISM IN _SOLANUM MELONGENA_ L. Article Open

access 10 May 2023 CONCENTRATION-DEPENDENT DUAL EFFECTS OF EXOGENOUS SUCROSE ON NITROGEN METABOLISM IN _ANDROGRAPHIS PANICULATA_ Article Open access 22 March 2022 THE EFFECT OF H2O2 ON

ELONGATION GROWTH AND OXIDATIVE STRESS IN MAIZE COLEOPTILE CELLS TREATED WITH AUXIN AND FUSICOCCIN Article Open access 15 April 2025 REFERENCES * Bonner, J., _Plant Biochemistry_ (Acad.

Press Inc., New York, 1959). Google Scholar  * Bonner, J., and Bandurski, P. S., _Ann. Rev. Plant Physiol._, 3, 59 (1952). Article  Google Scholar  * French, B. C., and Beevers, B., _Amer.

J. Bot._, 40, 660 (1953). Article  CAS  Google Scholar  * Rhodes, A., and Ashworth, B. de B., _Nature_, 169, 76 (1952). Article  ADS  CAS  Google Scholar  * Ormrod, D. P., and Williams, W.

A., _Plant Physiol._, 35, 81 (1960). Article  CAS  Google Scholar  * Key, J. L., Hauson, J. B., and Bils, R. F., _Plant Physiol._, 35, 177 (1960). Article  CAS  Google Scholar  * Marre, E.,

and Forti, G., _Physiol. Plantarum_, 11, 36 (1958). Article  CAS  Google Scholar  Download references AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Radiochemical Laboratory, Bose Institute,

Calcutta, 9 A. SEN GUPTA & S. P. SEN Authors * A. SEN GUPTA View author publications You can also search for this author inPubMed Google Scholar * S. P. SEN View author publications You

can also search for this author inPubMed Google Scholar RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE SEN GUPTA, A., SEN, S. Effect of Indole-3-Acetic

Acid (IAA) on Phosphorus Metabolism in the _Avena_ Coleoptile. _Nature_ 192, 1291–1292 (1961). https://doi.org/10.1038/1921291a0 Download citation * Issue Date: 30 December 1961 * DOI:

https://doi.org/10.1038/1921291a0 SHARE THIS ARTICLE Anyone you share the following link with will be able to read this content: Get shareable link Sorry, a shareable link is not currently

available for this article. Copy to clipboard Provided by the Springer Nature SharedIt content-sharing initiative