Tomato floral induction and flower development are orchestrated by the interplay between gibberellin and two unrelated microRNA-controlled modules

Bibliographische Detailangaben
Veröffentlicht in:	The New phytologist. - 1979. - 221(2019), 3 vom: 27. Feb., Seite 1328-1344
1. Verfasser:	Silva, Geraldo F F (VerfasserIn)
Weitere Verfasser:	Silva, Eder M, Correa, Joao P O, Vicente, Mateus H, Jiang, Nan, Notini, Marcela M, Junior, Airton C, De Jesus, Frederico A, Castilho, Pollyanna, Carrera, Esther, López-Díaz, Isabel, Grotewold, Erich, Peres, Lazaro E P, Nogueira, Fabio T S
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2019
Zugriff auf das übergeordnete Werk:	The New phytologist
Schlagworte:	Journal Article Research Support, Non-U.S. Gov't LANCEOLATE Solanum lycopersicum flowering time gibberellin (GA) miR156 miR319 Gibberellins MicroRNAs Plant Proteins

Beschreibung
Zusammenfassung:	© 2018 The Authors. New Phytologist © 2018 New Phytologist Trust. Age-regulated microRNA156 (miR156) and targets similarly control the competence to flower in diverse species. By contrast, the diterpene hormone gibberellin (GA) and the microRNA319-regulated TEOSINTE BRANCHED/CYCLOIDEA/PCF (TCP) transcription factors promote flowering in the facultative long-day Arabidopsis thaliana, but suppress it in the day-neutral tomato (Solanum lycopersicum). We combined genetic and molecular studies and described a new interplay between GA and two unrelated miRNA-associated pathways that modulates tomato transition to flowering. Tomato PROCERA/DELLA activity is required to promote flowering along with the miR156-targeted SQUAMOSA PROMOTER BINDING-LIKE (SPL/SBP) transcription factors by activating SINGLE FLOWER TRUSS (SFT) in the leaves and the MADS-Box gene APETALA1(AP1)/MC at the shoot apex. Conversely, miR319-targeted LANCEOLATE represses floral transition by increasing GA concentrations and inactivating SFT in the leaves and AP1/MC at the shoot apex. Importantly, the combination of high GA concentrations/responses with the loss of SPL/SPB function impaired canonical meristem maturation and flower initiation in tomato. Our results reveal a cooperative regulation of tomato floral induction and flower development, integrating age cues (miR156 module) with GA responses and miR319-controlled pathways. Importantly, this study contributes to elucidate the mechanisms underlying the effects of GA in controlling flowering time in a day-neutral species
Beschreibung:	Date Completed 21.01.2020 Date Revised 07.12.2022 published: Print-Electronic Citation Status MEDLINE
ISSN:	1469-8137
DOI:	10.1111/nph.15492