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Rootstock Affects Floral Induction in Citrus Engaging the Expression of the FLOWERING LOCUS T (CiFT)

Author

Listed:
  • Stefania Bennici

    (Department of Agriculture, Food and Environment (Di3A), University of Catania, Via Valdisavoia 5, 95123 Catania, Italy
    These authors contributed equally to this work.)

  • Giuseppina Las Casas

    (Department of Agriculture, Food and Environment (Di3A), University of Catania, Via Valdisavoia 5, 95123 Catania, Italy
    These authors contributed equally to this work.)

  • Gaetano Distefano

    (Department of Agriculture, Food and Environment (Di3A), University of Catania, Via Valdisavoia 5, 95123 Catania, Italy)

  • Alessandra Gentile

    (Department of Agriculture, Food and Environment (Di3A), University of Catania, Via Valdisavoia 5, 95123 Catania, Italy
    College of Horticulture and Landscape, Hunan Agricultural University, Changsha 410128, China)

  • Giuseppe Lana

    (Department of Agriculture, Food and Environment (Di3A), University of Catania, Via Valdisavoia 5, 95123 Catania, Italy)

  • Mario Di Guardo

    (Department of Agriculture, Food and Environment (Di3A), University of Catania, Via Valdisavoia 5, 95123 Catania, Italy)

  • Elisabetta Nicolosi

    (Department of Agriculture, Food and Environment (Di3A), University of Catania, Via Valdisavoia 5, 95123 Catania, Italy)

  • Stefano La Malfa

    (Department of Agriculture, Food and Environment (Di3A), University of Catania, Via Valdisavoia 5, 95123 Catania, Italy)

  • Alberto Continella

    (Department of Agriculture, Food and Environment (Di3A), University of Catania, Via Valdisavoia 5, 95123 Catania, Italy)

Abstract

In Citrus , flower induction represents the transition from vegetative to reproductive growth. The regulation of flower induction is mainly triggered by exposure to low temperatures and water-deficit stress, which activates the signaling cascade leading to an increased expression of the citrus orthologs of the FLOWERING LOCUS T ( CiFT ). In this study, the relationship between rootstock and flower induction under Mediterranean field conditions was investigated by monitoring the expression levels of the floral promoter CiFT2 in leaves of the pigmented sweet orange “Tarocco Scirè” grafted onto “C35” citrange and “Swingle” citrumelo rootstocks. The latter two are known to confer, respectively, high and low yield efficiency to the scion. In both rootstock/scion combinations, CiFT2 showed a seasonal expression with a peak during the inductive period in January triggered by cold temperature. The “Tarocco Scirè”/”C35” citrange combination showed the highest expression levels for CiFT2 ; this increased expression was correlated with yield and a higher number of flowers in the following spring, suggesting a significant effect of rootstocks on flower induction mediated by the overexpression of the CiFT2 gene.

Suggested Citation

  • Stefania Bennici & Giuseppina Las Casas & Gaetano Distefano & Alessandra Gentile & Giuseppe Lana & Mario Di Guardo & Elisabetta Nicolosi & Stefano La Malfa & Alberto Continella, 2021. "Rootstock Affects Floral Induction in Citrus Engaging the Expression of the FLOWERING LOCUS T (CiFT)," Agriculture, MDPI, vol. 11(2), pages 1-11, February.
    • Handle: RePEc:gam:jagris:v:11:y:2021:i:2:p:140-:d:495875
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    Cited by:

    1. Mukesh Shivran & Nimisha Sharma & Anil Kumar Dubey & Sanjay Kumar Singh & Neha Sharma & Radha Mohan Sharma & Narendra Singh & Rakesh Singh, 2022. "Scion–Rootstock Relationship: Molecular Mechanism and Quality Fruit Production," Agriculture, MDPI, vol. 12(12), pages 1-15, November.

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