A specific Gibberellin 20-oxidase dictates the flowering-runnering decision in diploid strawberry
| Autor: | Theo Lange, Tracey Tenreira, Cécile Bres, Béatrice Denoyes, Marc Labadie, Christophe Rothan, Michel Hernould, Amparo Monfort, Maria João Pimenta Lange |
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| Přispěvatelé: | Ministère de l’Enseignement supérieur et de la Recherche (France), Conseil régional d'Aquitaine, l’Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (France), European Commission, Biologie du fruit et pathologie (BFP), Université Sciences et Technologies - Bordeaux 1-Université Bordeaux Segalen - Bordeaux 2-Institut National de la Recherche Agronomique (INRA), Technical University Braunschweig, Institute of Agrifood Research and Technology (IRTA) |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Vegetative reproduction Stolon fungi food and beverages Asexual reproduction Cell Biology Plant Science Meristem Biology Fragaria 01 natural sciences Sexual reproduction 03 medical and health sciences 030104 developmental biology Axillary bud Botany [SDV.BV]Life Sciences [q-bio]/Vegetal Biology Primordium 010606 plant biology & botany |
| Zdroj: | Recercat: Dipósit de la Recerca de Catalunya Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) Digital.CSIC. Repositorio Institucional del CSIC instname Dipòsit Digital de Documents de la UAB Universitat Autònoma de Barcelona Digital.CSIC: Repositorio Institucional del CSIC Consejo Superior de Investigaciones Científicas (CSIC) Recercat. Dipósit de la Recerca de Catalunya The Plant cell The Plant cell, American Society of Plant Biologists (ASPB), 2017, 29 (9), pp.2168-2182. ⟨10.1105/tpc.16.00949⟩ |
| ISSN: | 1040-4651 1532-298X |
| Popis: | Asexual and sexual reproduction occur jointly in many angiosperms. Stolons (elongated stems) are used for asexual reproduction in the crop species potato (Solanum tuberosum) and strawberry (Fragaria spp), where they produce tubers and clonal plants, respectively. In strawberry, stolon production is essential for vegetative propagation at the expense of fruit yield, but the underlying molecular mechanisms are unknown. Here, we show that the stolon deficiency trait of the runnerless (r) natural mutant in woodland diploid strawberry (Fragaria vesca) is due to a deletion in the active site of a gibberellin 20-oxidase (GA20ox) gene, which is expressed primarily in the axillary meristem dome and primordia and in developing stolons. This mutation, which is found in all r mutants, goes back more than three centuries. When FveGA20ox4 is mutated, axillary meristems remain dormant or produce secondary shoots terminated by inflorescences, thus increasing the number of inflorescences in the plant. The application of bioactive gibberellin (GA) restored the runnering phenotype in the r mutant, indicating that GA biosynthesis in the axillary meristem is essential for inducing stolon differentiation. The possibility of regulating the runnering-flowering decision in strawberry via FveGA20ox4 provides a path for improving productivity in strawberry by controlling the trade-off between sexual reproduction and vegetative propagation. This research was funded by the French Ministry of Research. This work was supported by Région Aquitaine (REGAL Project) and by the French Academy of Agriculture (Dufrenoy Grant to T.T., 2015) and was carried out under the auspices of the EU-FP7-KBBE-2010-4 Project (Grant 265942). |
| Databáze: | OpenAIRE |
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