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Cytokinins and the CRE1 receptor influence endogenous gibberellin levels in Medicago truncatula


Fonouni-Farde, C and McAdam, E and Nichols, D and Diet, A and Foo, E and Frugier, F, Cytokinins and the CRE1 receptor influence endogenous gibberellin levels in Medicago truncatula, Plant Signaling and Behavior, 13, (2) Article e1428513. ISSN 1559-2316 (2018) [Refereed Article]


Copyright Statement

2018 The Authors. Licensed under Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)

DOI: doi:10.1080/15592324.2018.1428513


Gibberellins (GAs) and cytokinins (CKs) are hormones that play antagonistic roles in several developmental processes in plants. However, there has been little exploration of their reciprocal interactions. Recent work in Medicago truncatula has revealed that GA signalling can regulate CK levels and response in roots. Here, we examine the reciprocal interaction, by assessing how CKs and the CRE1 (Cytokinin Response 1) CK receptor may influence endogenous GA levels. Real-Time RT-PCR analyses revealed that the expression of key GA biosynthesis genes is regulated in response to a short-term CK treatment and requires the CRE1 receptor. Similarly, GA quantifications indicated that a short-term CK treatment decreases the GA1 pool in wild-type plants and that GA levels are increased in the cre1 mutant compared to the wild-type. These data suggest that the M. truncatula CRE1-dependent CK signaling pathway negatively regulates bioactive GA levels.

Item Details

Item Type:Refereed Article
Keywords:cytokinins, gibberellins, plant hormones, legume, Medicago truncatula
Research Division:Biological Sciences
Research Group:Plant biology
Research Field:Plant physiology
Objective Division:Plant Production and Plant Primary Products
Objective Group:Environmentally sustainable plant production
Objective Field:Environmentally sustainable plant production not elsewhere classified
UTAS Author:McAdam, E (Dr Erin McAdam)
UTAS Author:Nichols, D (Dr David Nichols)
UTAS Author:Foo, E (Associate Professor Eloise Foo)
ID Code:126870
Year Published:2018
Web of Science® Times Cited:6
Deposited By:Central Science Laboratory
Deposited On:2018-06-29
Last Modified:2019-12-03
Downloads:80 View Download Statistics

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