ArticleJournal of integrative plant biology2024
Sucrose induces flowering by degradation of the floral repressor Ghd7 via K48-linked polyubiquitination in rice.
Article in Journal of integrative plant biology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Advances and opportunities for computational interrogation of plant proteins.The Plant journal : for cell and molecular biology · 2026Review
- The combined effects of Golden2-like 2 and Pseudo-Response Regulator 2 control the fruit pigmentation in pepper.The Plant journal : for cell and molecular biology · 2026Article
- Rice OsFKF1 Promotes Degradation of OsPRR37 for Short-Day Early Flowering.Rice (New York, N.Y.) · 2025Article
- Phenotypic and transcriptomic characterization of OsSWEET14-edited rice (cv. Samkwang) with enhanced bacterial blight resistance.BMC plant biology · 2025Article
- Sucrose induces flowering by degradation of the floral repressor Ghd7 via K48-linked polyubiquitination in rice.Journal of integrative plant biology · 2024Article
- Temperature-Photoperiod Interaction in Rice Phenology for Climate Adaptation: Insights Into Glycerate-Associated Metabolic Responses.Physiologia plantarumArticle
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10 authors.
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Abstract
Sucrose functions as a signaling molecule in several metabolic pathways as well as in various developmental processes. However, the molecular mechanisms by which sucrose regulates these processes remain largely unknown. In the present study, we demonstrate that sucrose promotes flowering by mediating the stability of a regulatory protein that represses flowering in rice. Exogenous application of sucrose promoted flowering by inducing florigen gene expression. Reduction of sucrose levels in the phloem through genetic modifications, such as the overexpression of the vacuolar invertase OsVIN2 or the mutation of OsSUT2, a sucrose transporter, delayed flowering. Analysis of relative transcript levels of floral regulatory genes showed that sucrose activated Ehd1 upstream of the florigen, with no significant effect on the expression of other upstream genes. Examination of protein stability after sucrose treatment of major floral repressors revealed that the Ghd7 protein was specifically degraded. The Ghd7 protein interacted with the E3 ligase IPA INTERACTING PROTEIN1 (IPI1), and sucrose-induced K48-linked polyubiquitination of Ghd7 via IPI1, leading to protein degradation. Mutants defective in IPI1 delayed flowering, confirming its role in modulating proteins involved in flowering. We conclude that sucrose acts as a signaling molecule to induce flowering by promoting Ghd7 degradation via IPI1.
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