Different roles of flowering-time genes in the activation of floral initiation genes in Arabidopsis

  1. Ruiz-García, L. 1
  2. Madueño, F. 13
  3. Wilkinson, M. 2
  4. Haughn, G. 2
  5. Saunas, J. 1
  6. Martínez-Zapater, J.M. 1
  1. 1 Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria
    info

    Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria

    Madrid, España

    ROR https://ror.org/011q66e29

  2. 2 University of British Columbia
    info

    University of British Columbia

    Vancouver, Canadá

    ROR https://ror.org/03rmrcq20

  3. 3 Universidad Politécnica de Valencia
    info

    Universidad Politécnica de Valencia

    Valencia, España

    ROR https://ror.org/01460j859

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Revista:
Plant Cell

ISSN: 1040-4651

Año de publicación: 1997

Volumen: 9

Número: 11

Páginas: 1921-1934

Tipo: Artículo

DOI: 10.1105/TPC.9.11.1921 PMID: 9401118 SCOPUS: 2-s2.0-0031277693 GOOGLE SCHOLAR lock_openAcceso abierto editor

Otras publicaciones en: Plant Cell

Repositorio institucional: lock_openAcceso abierto Editor

Resumen

We have analyzed double mutants that combine late-flowering mutations at four flowering-time loci (FVE, FPA, FWA, and FT) with mutations at the LEAFY (LFY), APETALA 1 (AP1), and TERMINAL FLOWER1 (TFL 1) loci involved in the floral initiation process (FLIP). Double mutants between ft-1 or fwa-1 and lfy-6 completely lack flowerlike structures, indicating that both FWA and FT act redundantly with LFY to control AP1. Moreover, the phenotypes of ft-1 ap1-1 and fwa-1 apt-1 double mutants are reminiscent of the phenotype of ap1-1 cal-1 double routants, suggesting that FWA and FT could also be involved in the control of other FLIP genes. Such extreme phenotypes were not observed in double mutants between fve-2 or fpa-1 and lfy-6 or ap1-1. Each of these showed a phenotype similar to that of ap1-1 or lfy-6 mutants grown under noninductive photoperiods, suggesting a redundant interaction with FLIP genes. Finally, the phenotype of double mutants combining the late-flowering mutations with tfl1-2 were also consistent with the different roles of flowering-time genes.