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    Expression analysis of Flowering related genes in olive plants transformed with the "Medicago truncatula" FT gene MtFTa1

    • Autor
      Guerrero-Ruiz, Consolación MaríaAutoridad Universidad de Málaga; Mercado-Carmona, José ÁngelAutoridad Universidad de Málaga; Samach, Alon; Pliego-Alfaro, FernandoAutoridad Universidad de Málaga; Palomo-Ríos, Elena
    • Fecha
      2020-12-15
    • Palabras clave
      Olivos - Floración
    • Resumen
      Olive tree (Olea europaea L.) forms inflorescences in lateral buds that flower in spring. Flowering occurs due to the presence of a mobile flower-promoting factor called florigen, the product of “FLOWERING LOCUS T” (FT). In many plants, FT and TERMINAL FLOWER 1 (TFL1) genes encode related proteins with opposite functions, i.e. FT induces flowering, while TFL1 represses it. Olive flower induction seems to be mediated by an increase in FT levels in response to cold winters. Because of climate change, warmer winters are expected, which can alter flowering time. Three olive transgenic lines containing the MtFTa1 gene from Medicago truncatula were obtained (FT5, FT7 and FT15) to study the effect of FT on flowering time (Haberman et al., 2017). The embryogenic line P1 from a seed of cv. Picual was used for transformation, and also as control (CP1). FT7 flowered continuously; FT5 did not flower and showed a dwarf branching phenotype, and FT15 had a dwarf-branching habit and developed abnormal flowers. The expression of the transgene and three endogenous genes (OeFT1, OeFT2 and OeTFL1-1) was analyzed in these juvenile plants, as well as in the control (CP1), throughout the year (autumn, winter and spring).
    • URI
      https://hdl.handle.net/10630/20583
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    CONSUELOGUERRERO_abstract-1.pdf (81.13Kb)
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    REPOSITORIO INSTITUCIONAL UNIVERSIDAD DE MÁLAGA
    REPOSITORIO INSTITUCIONAL UNIVERSIDAD DE MÁLAGA