The co-chaperone p23 controls root development through the modulation of auxin distribution in the Arabidopsis root meristem.

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Version: Final published version
Serval ID
serval:BIB_81ACC5AF64D5
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
The co-chaperone p23 controls root development through the modulation of auxin distribution in the Arabidopsis root meristem.
Journal
Journal of Experimental Botany
Author(s)
D'Alessandro S., Golin S., Hardtke C.S., Lo Schiavo F., Zottini M.
ISSN
1460-2431 (Electronic)
ISSN-L
0022-0957
Publication state
Published
Issued date
2015
Peer-reviewed
Oui
Volume
66
Number
16
Pages
5113-5122
Language
english
Abstract
Homologues of the p23 co-chaperone of HSP90 are present in all eukaryotes, suggesting conserved functions for this protein throughout evolution. Although p23 has been extensively studied in animal systems, little is known about its function in plants. In the present study, the functional characterization of the two isoforms of p23 in Arabidopsis thaliana is reported, suggesting a key role of p23 in the regulation of root development. Arabidopsis p23 mutants, for either form, show a short root length phenotype with a reduced meristem length. In the root meristem a low auxin level associated with a smaller auxin gradient was observed. A decrease in the expression levels of PIN FORMED PROTEIN (PIN)1, PIN3, and PIN7, contextually to an inefficient polar localization of PIN1, was detected. Collectively these results suggest that both Arabidopsis p23 isoforms are required for root growth, in particular in the maintenance of the root meristem, where the proteins are located.
Keywords
Arabidopsis/genetics, Arabidopsis/growth & development, Arabidopsis Proteins/genetics, Arabidopsis Proteins/metabolism, Gene Expression Regulation, Developmental, Gene Expression Regulation, Plant, Indoleacetic Acids/metabolism, Meristem/metabolism, Molecular Chaperones/genetics, Molecular Chaperones/metabolism, Plant Growth Regulators/metabolism, Plant Roots/growth & development, Plant Roots/metabolism
Pubmed
Web of science
Open Access
Yes
Create date
25/07/2016 8:18
Last modification date
20/08/2019 14:41
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