Plant Physiol. email content delivery
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Plant Physiology 69:1109-1112 (1982)
© 1982 American Society of Plant Biologists

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Iino, M.
Right arrow Articles by Carr, D. J.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Iino, M.
Right arrow Articles by Carr, D. J.
Agricola
Right arrow Articles by Iino, M.
Right arrow Articles by Carr, D. J.
Articles

Sources of Free IAA in the Mesocotyl of Etiolated Maize Seedlings

Moritoshi Iino1 and Denis J. Carr

Department of Developmental Biology, Research School of Biological sciences, The Australian National University, Canberra City, A.C.T. 2601, Australia

Sources of free indole-3-acetic acid (IAA) for the mesocotyl of intact etiolized maize ((Zea mays L.) seedlings are evaluated. The coleoptile unit, which includes the primary leaves and the coleoptilar node, is the main source of free IAA for the mesocotyl. The seed and the roots are not immediate sources of IAA supply. Dependence of the apical growing region of the mesocotyl on the coleoptile unit as a source of free IAA is almost total. One-half or more of the supply of IAA comes from the coleoptile tip, the rest mainly from the primary leaves. Removal of the coleoptile tip results in inhibition of mesocotyl elongation. The hypothesis that growth of the mesocotyl is regulated by auxin supplied by the coleoptile is supported. Conjugated forms of IAA appear to play little part in regulating the levels of free IAA in the shoot.

1 Present address: Department of Plant Biology, Carnegie Institution of Washington, 290 Panama Street, Stanford, CA 94305.




This article has been cited by other articles:


Home page
 Plant Cell PhysiolHome page
G. He, Y. Tarui, and M. Iino
A Novel Receptor Kinase Involved in Jasmonate-mediated Wound and Phytochrome Signaling in Maize Coleoptiles
Plant Cell Physiol., June 1, 2005; 46(6): 870 - 883.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
A. Cona, F. Cenci, M. Cervelli, R. Federico, P. Mariottini, S. Moreno, and R. Angelini
Polyamine Oxidase, a Hydrogen Peroxide-Producing Enzyme, Is Up-Regulated by Light and Down-Regulated by Auxin in the Outer Tissues of the Maize Mesocotyl
Plant Physiology, February 1, 2003; 131(2): 803 - 813.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
K. Haga and M. Iino
Auxin-Growth Relationships in Maize Coleoptiles and Pea Internodes and Control by Auxin of the Tissue Sensitivity to Auxin
Plant Physiology, August 1, 1998; 117(4): 1473 - 1486.
[Abstract] [Full Text]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
ASPB Publications PLANT PHYSIOLOGY THE PLANT CELL
Copyright © 1982 by the American Society of Plant Biologists