The sugar transporter SWEET10 acts downstream of FLOWERING LOCUS T during floral transition of Arabidopsis thaliana

Autor: Yasutaka Chiba, Fernando Andrés, Tiago M. D. Cruz, Virginia Fernández, Seonghoe Jang, Tabea Mettler-Altmann, George Coupland, Atsuko Kinoshita, Vítor da Silveira Falavigna, Bruno Huettel, Mitsunori Seo, Naveen Kalluri
Přispěvatelé: Max Planck Institute for Plant Breeding Research (MPIPZ), Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), World Vegetable Center Korea Office, RIKEN Center for Sustainable Resource Science [Yokohama] (RIKEN CSRS), RIKEN - Institute of Physical and Chemical Research [Japon] (RIKEN), Computer Science [Heinrich Heine University], Heinrich Heine Universität Düsseldorf = Heinrich Heine University [Düsseldorf], European Project: 251839,EC:FP7:PEOPLE,FP7-PEOPLE-2009-IEF,FT AND FLOWERING(2010), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro - Montpellier SupAgro, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: BMC Plant Biology
BMC Plant Biology, 2020, 20 (1), ⟨10.1186/s12870-020-2266-0⟩
BMC Plant Biology, Vol 20, Iss 1, Pp 1-14 (2020)
ISSN: 1471-2229
Popis: BackgroundFloral transition initiates reproductive development of plants and occurs in response to environmental and endogenous signals. InArabidopsis thaliana, this process is accelerated by several environmental cues, including exposure to long days. The photoperiod-dependent promotion of flowering involves the transcriptional induction ofFLOWERING LOCUS T(FT) in the phloem of the leaf.FTencodes a mobile protein that is transported from the leaves to the shoot apical meristem, where it forms part of a regulatory complex that induces flowering. Whether FT also has biological functions in leaves of wild-type plants remains unclear.ResultsIn order to address this issue, we first studied the leaf transcriptomic changes associated with FT overexpression in the companion cells of the phloem. We found that FT induces the transcription ofSWEET10, which encodes a bidirectional sucrose transporter, specifically in the leaf veins. Moreover,SWEET10is transcriptionally activated by long photoperiods, and this activation depends on FT and one of its earliest target genesSUPPRESSOR OF CONSTANS OVEREXPRESSION 1(SOC1). The ectopic expression ofSWEET10causes early flowering and leads to higher levels of transcription of flowering-time related genes in the shoot apex.ConclusionsCollectively, our results suggest that the FT-signaling pathway activates the transcription of a sucrose uptake/efflux carrier during floral transition, indicating that it alters the metabolism of flowering plants as well as reprogramming the transcription of floral regulators in the shoot meristem.
Databáze: OpenAIRE
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