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

Different roles of flowering-time genes in the activation of floral initiation genes in Arabidopsis. Ruiz-García, L., Madueño, F., Wilkinson, M., Haughn, G., Saunas, J., & Martínez-Zapater, J. Plant Cell, 1997.
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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.

@article{
 title = {Different roles of flowering-time genes in the activation of floral initiation genes in Arabidopsis},
 type = {article},
 year = {1997},
 volume = {9},
 id = {33b793ad-379e-35ac-9e2c-27b585fb4238},
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 last_modified = {2018-07-06T08:42:56.713Z},
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 abstract = {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.},
 bibtype = {article},
 author = {Ruiz-García, L. and Madueño, F. and Wilkinson, M. and Haughn, G. and Saunas, J. and Martínez-Zapater, J.M.},
 doi = {10.1105/tpc.9.11.1921},
 journal = {Plant Cell},
 number = {11}
}

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