Deciphering the balance between sexual and asexual plant reproduction in an herbaceous perennial, the strawberry. [Poster-D268]

Gaston Amèlia, Potier A., Tenreira T., Labadie Marc, Petit Aurélie, Bres Cécile, Perrotte Justine, Demené Marie-Noëlle, Guédon Yann, Rothan Christophe, Hernould Michel, Delmas Frédéric. 2018. Deciphering the balance between sexual and asexual plant reproduction in an herbaceous perennial, the strawberry. [Poster-D268]. In : Abstracts of 12th IPMB2018. Agropolis Fondation, MUSE, l'INRA, le CNRS, Montpellier SupAgro, l'Université de Montpellier, l'IRD, CIRAD, la SFBV, le Labex Tulip, la SPS, Molecular Plant, The Plant Cell, Communications Biology, la Région Occitanie - Pyrénées/Méditerranée. Montpellier : IPMB, Résumé, 184. Congress of the International Plant Molecular Biology ( IPMB2018). 12, Montpellier, France, 5 Août 2018/10 Août 2018.

Résumé : Strawberry, the major berry fruit crop, is a relevant model to study the occurrence and concomitance of various developmental processes/ events . Vegetative reproduction through stolons (elongated stems) and sexual reproduction through inflorescences occur successively or jointly, depending on the genotype, cultural technique and environment. The control of the trade-off between flowering and runnering is crucial for managing the production of plants in nurseries and the production of fruits in fields, tunnels or greenhouses. The runnering and flowering pathways likely interact. We recently showed in diploid strawberry that the gibberellin biosynthetic enzyme GA20ox plays a key role in controlling this trade-off by regulating the fate of axillary meristem to either stolon or inflorescence. We also showed that the floral repressor FvTFL1 controls perpetual flowering (PF). Interestingly, in the cultivated octoploid strawberry, a single major locus FaPFRU that does not involve GA20ox or TFL1 controls PF and displays opposite effects on flowering and runnering. We further identified by using longitudinal data analysis methods a locus controlling the flowering intensity of the last phase of PF. We will present how these results deepen our understanding of the underlying mechanisms and allow a better control of fruit yield in strawberry.

Auteurs et affiliations

• Gaston Amèlia, INRA (FRA)
• Potier A., INRA (FRA)
• Tenreira T., INRA (FRA)
• Labadie Marc, INRA (FRA)
• Petit Aurélie, CIREF (FRA)
• Bres Cécile, INRA (FRA)
• Perrotte Justine, CIREF (FRA)
• Demené Marie-Noëlle, Invenio (FRA)
• Guédon Yann, CIRAD-BIOS-UMR AGAP (FRA)
• Rothan Christophe, INRA (FRA)
• Hernould Michel, INRA (FRA)
• Delmas Frédéric, INRA (FRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/594945/)

Métriques

[ Page générée et mise en cache le 2023-05-03 ]