Strigolactones spatially influence lateral root development through the cytokinin signaling network

Strigolactones spatially influence lateral root development through the cytokinin signaling network

© The Author 2015. Published by Oxford University Press on behalf of the Society for Experimental Biology.

Bibliographische Detailangaben
Veröffentlicht in:Journal of experimental botany. - 1985. - 67(2016), 1 vom: 01. Jan., Seite 379-89
1. Verfasser: Jiang, Lingxiang (VerfasserIn)
Weitere Verfasser: Matthys, Cedrick, Marquez-Garcia, Belen, De Cuyper, Carolien, Smet, Lien, De Keyser, Annick, Boyer, François-Didier, Beeckman, Tom, Depuydt, Stephen, Goormachtig, Sofie
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 cytokinin signaling lateral root development polar auxin transport strigolactones. ARR1 protein, Arabidopsis ARR12 protein, Arabidopsis Arabidopsis Proteins mehr... Cytokinins DNA-Binding Proteins GR24 strigolactone Heterocyclic Compounds, 3-Ring Lactones Transcription Factors Protein Kinases EC 2.7.- Histidine Kinase EC 2.7.13.1 AHK3 protein, Arabidopsis EC 2.7.13.3
Beschreibung
Zusammenfassung:© The Author 2015. Published by Oxford University Press on behalf of the Society for Experimental Biology.
Strigolactones are important rhizosphere signals that act as phytohormones and have multiple functions, including modulation of lateral root (LR) development. Here, we show that treatment with the strigolactone analog GR24 did not affect LR initiation, but negatively influenced LR priming and emergence, the latter especially near the root-shoot junction. The cytokinin module ARABIDOPSIS HISTIDINE KINASE3 (AHK3)/ARABIDOPSIS RESPONSE REGULATOR1 (ARR1)/ARR12 was found to interact with the GR24-dependent reduction in LR development, because mutants in this pathway rendered LR development insensitive to GR24. Additionally, pharmacological analyses, mutant analyses, and gene expression analyses indicated that the affected polar auxin transport stream in mutants of the AHK3/ARR1/ARR12 module could be the underlying cause. Altogether, the data reveal that the GR24 effect on LR development depends on the hormonal landscape that results from the intimate connection with auxins and cytokinins, two main players in LR development
Beschreibung:Date Completed 23.09.2016
Date Revised 13.11.2018
published: Print-Electronic
Citation Status MEDLINE
ISSN:1460-2431
DOI:10.1093/jxb/erv478