Flower induction and development in saffron: Timing and hormone signalling pathways

The demand for saffron is expected to rise in the coming years due its nutraceutical and medicinal properties. To cope with this, it will be necessary develop a mechanised production of saffron. Upgrading methods requires accurate control flowering time this species. Nevertheless, little known about Crocus sativus L. aim study gain insight into floral induction regulatory networks operating A transcriptomic analysis was performed from main buds different stages development. identification putative integrators signals, like FT, as well meristem identity genes, such LFY TFL1, permitted definition buds, being able use them molecular markers. transcripts encoded by DROOPING LEAF-like (DL) gene particular relevance because might novel factor carpel specification elucidate hormonal signalling working during flower induction, data were used, content IAA, ABA gibberellins determined competent non-competent flower, life cycle. Our results suggested that negatively regulating corm dormancy release, but involvement cannot ruled out. ABI5 mediator regulated MARD1, could key players pathway. In addition, drop GA4 levels may also necessary, insufficient, condition DELLA, TFL1 PIF3 genes involved gibberellin Notably, IAA seems positive regulator process, involving MP/ARF5 ANT Taken together, these pave way unveiling controlling vegetative-to-reproductive phase change