Functional characterization of the Arabidopsis transcription factor bZIP29 reveals its role in leaf and root development

Bibliographische Detailangaben
Veröffentlicht in:	Journal of experimental botany. - 1985. - 67(2016), 19 vom: 01. Okt., Seite 5825-5840
1. Verfasser:	Van Leene, Jelle (VerfasserIn)
Weitere Verfasser:	Blomme, Jonas, Kulkarni, Shubhada R, Cannoot, Bernard, De Winne, Nancy, Eeckhout, Dominique, Persiau, Geert, Van De Slijke, Eveline, Vercruysse, Leen, Vanden Bossche, Robin, Heyndrickx, Ken S, Vanneste, Steffen, Goossens, Alain, Gevaert, Kris, Vandepoele, Klaas, Gonzalez, Nathalie, Inzé, Dirk, De Jaeger, Geert
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2016
Zugriff auf das übergeordnete Werk:	Journal of experimental botany
Schlagworte:	Journal Article Research Support, Non-U.S. Gov't Arabidopsis thaliana bZIP group I transcription factors cell proliferation cell wall chromatin immunoprecipitation leaf cell number plant development root cell number mehr... tandem affinity purification. Arabidopsis Proteins Basic-Leucine Zipper Transcription Factors

Beschreibung
Zusammenfassung:	© The Author 2016. Published by Oxford University Press on behalf of the Society for Experimental Biology. Plant bZIP group I transcription factors have been reported mainly for their role during vascular development and osmosensory responses. Interestingly, bZIP29 has been identified in a cell cycle interactome, indicating additional functions of bZIP29 in plant development. Here, bZIP29 was functionally characterized to study its role during plant development. It is not present in vascular tissue but is specifically expressed in proliferative tissues. Genome-wide mapping of bZIP29 target genes confirmed its role in stress and osmosensory responses, but also identified specific binding to several core cell cycle genes and to genes involved in cell wall organization. bZIP29 protein complex analyses validated interaction with other bZIP group I members and provided insight into regulatory mechanisms acting on bZIP dimers. In agreement with bZIP29 expression in proliferative tissues and with its binding to promoters of cell cycle regulators, dominant-negative repression of bZIP29 altered the cell number in leaves and in the root meristem. A transcriptome analysis on the root meristem, however, indicated that bZIP29 might regulate cell number through control of cell wall organization. Finally, ectopic dominant-negative repression of bZIP29 and redundant factors led to a seedling-lethal phenotype, pointing to essential roles for bZIP group I factors early in plant development
Beschreibung:	Date Completed 20.11.2017 Date Revised 13.11.2018 published: Print-Electronic Citation Status MEDLINE
ISSN:	1460-2431