Change search
ReferencesLink to record
Permanent link

Direct link
Regulation of Auxin Homeostasis and Gradients in Arabidopsis Roots through the Formation of the Indole-3-Acetic Acid Catabolite 2-Oxindole-3-Acetic Acid
Show others and affiliations
2013 (English)In: The Plant Cell, ISSN 1040-4651, E-ISSN 1532-298X, Vol. 25, no 10, 3858-3870 p.Article in journal (Refereed) Published
Abstract [en]

The native auxin, indole-3-acetic acid (IAA), is a major regulator of plant growth and development. Its nonuniform distribution between cells and tissues underlies the spatiotemporal coordination of many developmental events and responses to environmental stimuli. The regulation of auxin gradients and the formation of auxin maxima/minima most likely involve the regulation of both metabolic and transport processes. In this article, we have demonstrated that 2-oxindole-3-acetic acid (oxIAA) is a major primary IAA catabolite formed in Arabidopsis thaliana root tissues. OxIAA had little biological activity and was formed rapidly and irreversibly in response to increases in auxin levels. We further showed that there is cell type-specific regulation of oxIAA levels in the Arabidopsis root apex. We propose that oxIAA is an important element in the regulation of output from auxin gradients and, therefore, in the regulation of auxin homeostasis and response mechanisms.

Place, publisher, year, edition, pages
2013. Vol. 25, no 10, 3858-3870 p.
National Category
Botany Biochemistry and Molecular Biology Cell Biology
URN: urn:nbn:se:umu:diva-85109DOI: 10.1105/tpc.113.114421ISI: 000327723100019OAI: diva2:691600
Swedish Research Council
Available from: 2014-01-28 Created: 2014-01-28 Last updated: 2014-01-28Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Sandberg, Göran
By organisation
Department of Plant PhysiologyUmeå Plant Science Centre (UPSC)
In the same journal
The Plant Cell
BotanyBiochemistry and Molecular BiologyCell Biology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 49 hits
ReferencesLink to record
Permanent link

Direct link