Long-Distance, Graft-Transmissible Action of Arabidopsis FLOWERING LOCUS T Protein to Promote Flowering

Notaguchi, Michitaka; Abe, M.; Kimura, Toshifumi; Daimon, Yasufumi; Kobayashi, Taizou; Yamaguchi, Ayako; Tomita, Yumiko; Dohi, Koji; Mori, Masasi; Araki, T.

doi:10.1093/pcp/pcn176

Cited by 65 publications

(95 citation statements)

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“…FT is expressed predominantly in leaves and it is thought that the small FT protein moves to the shoot apex, where it induces flowering by interacting with the FD transcription factor (Abe et al Wigge et al 2005;Lifschitz et al 2006;Corbesier et al 2007;Jaeger and Wigge 2007;Lin et al 2007;Mathieu et al 2007;Tamaki et al 2007;Li and Dubcovsky 2008;Notaguchi et al 2008). A major role for FT in flowering time regulation has been shown in many species, including rice, wheat, and poplar (Kojima et al 2002;Bö hlenius et al 2006;Yan et al 2006).…”

Section: Discussionmentioning

confidence: 99%

“…FT and its homologs are very likely an integral part of the mobile signal (florigen) that is produced in leaves and travels to the shoot apex to induce flowering (Abe et al 2005;Wigge et al 2005;Lifschitz et al 2006;Corbesier et al 2007;Jaeger and Wigge 2007;Lin et al 2007;Mathieu et al 2007;Tamaki et al 2007;Notaguchi et al 2008). In A. thaliana, FT expression is controlled by photoperiod, vernalization, and ambient growth temperature.…”

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confidence: 99%

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Cis-regulatory Changes atFLOWERING LOCUS TMediate Natural Variation in Flowering Responses ofArabidopsis thaliana

et al. 2009

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Flowering time, a critical adaptive trait, is modulated by several environmental cues. These external signals converge on a small set of genes that in turn mediate the flowering response. Mutant analysis and subsequent molecular studies have revealed that one of these integrator genes, FLOWERING LOCUS T (F T), responds to photoperiod and temperature cues, two environmental parameters that greatly influence flowering time. As the central player in the transition to flowering, the protein coding sequence of FT and its function are highly conserved across species. Using QTL mapping with a new advanced intercross-recombinant inbred line (AI-RIL) population, we show that a QTL tightly linked to FT contributes to natural variation in the flowering response to the combined effects of photoperiod and ambient temperature. Using heterogeneous inbred families (HIF) and introgression lines, we fine map the QTL to a 6.7 kb fragment in the FT promoter. We confirm by quantitative complementation that FT has differential activity in the two parental strains. Further support for FT underlying the QTL comes from a new approach, quantitative knockdown with artificial microRNAs (amiRNAs). Consistent with the causal sequence polymorphism being in the promoter, we find that the QTL affects FT expression. Taken together, these results indicate that allelic variation at pathway integrator genes such as FT can underlie phenotypic variability and that this may be achieved through cis-regulatory changes.

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Section: Discussionmentioning

confidence: 99%

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Cis-regulatory Changes atFLOWERING LOCUS TMediate Natural Variation in Flowering Responses ofArabidopsis thaliana

et al. 2009

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“…One case in which it could work in citrus is the reduction of juvenility using the FT protein. Transgenic FT is capable of inducing flowering through graft unions (Notaguchi et al, 2008;Notaguchi et al, 2009). Induction of pathogen defense could potentially be tackled this way as well since some of the proteins activate systemic signaling (Xia et al, 2004).…”

Section: Conclusion: the Future Of Citrus Transformationmentioning

confidence: 99%

Citrus Transformation: Challenges and Prospects

Febres¹,

Fisher²,

Khalaf³

et al. 2011

Genetic Transformation

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“…There are some genes involved in flowering and among those genes, FLOWERING LOCUS T (FT) is a fl oral integrator that plays an important role in controlling fl owering time. Most recently, the nature of FT and its ortholog as fl origen, a mobile fl owering signal, has been proposed in tomato, rice, arabidopsis and cucurbits (Lifschitz, et al, 2006;Tamaki et al, 2007;Corbesier et al, 2007;Jaeger and Wigge, 2007;Mathieu et al, 2007;Lin et al, 2007;Notaguchi et al, 2008;Zeevart, 2008). At present, the isolation of FT gene in orchid (Oncidium Gower Ramsey) has been reported.…”

Section: Introductionmentioning

confidence: 99%

Effects of Light Quality on Vegetative Growth and Flower Initiation in Phalaenopsis

et al. 2015

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The effects of LEDs (Light-Emitting Diodes) emitting different colours namely red, blue, red and blue, and white lights on vegetative growth and fl ower initiation of Phalaenopsis have been evaluated. Phalaenopsis"otohine/taisuco fi re bird" seedlings in vitro were subjected to different light qualities for either 2 or 4 weeks, and then each seedling was planted in a plastic pot containing sphagnum and grown in the growth chamber under similar light quality for 3 months. For fl ower induction, mature Phalaenopsis plants having 4 -6 leaves were grown for 3 months in the growth chamber under different light qualities. The leaf span, chlorophyll, gibberellin and cytokinin content were determined. In addition, the expressions of FT-like gene in the leaf, axillary bud, fl ower bud and stalk were examined.Vegetative growth was enhanced under blue, red-blue or white LEDs compared to that of the control. Gibberellin and cytokinin content increased in the seedlings subjected to white LEDs. Based on the average of leaf span increment it was suggested that the growth of Phalaenopsis seedlings can be promoted by giving either blue, red-blue or white LEDs. From the second experiment, it was found that fl ower induction in Phalaenopsis can be obtained in plants that had just fi nished fl owering without the application of LEDs. The expression of FT-like gene in the leaf as well as fl ower bud and stalk suggests that this gene is involved in fl ower regulation of Phalaenopsis.

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Long-Distance, Graft-Transmissible Action of Arabidopsis FLOWERING LOCUS T Protein to Promote Flowering

Cited by 65 publications

References 0 publications

Cis-regulatory Changes atFLOWERING LOCUS TMediate Natural Variation in Flowering Responses ofArabidopsis thaliana

Cis-regulatory Changes atFLOWERING LOCUS TMediate Natural Variation in Flowering Responses ofArabidopsis thaliana

Citrus Transformation: Challenges and Prospects

Effects of Light Quality on Vegetative Growth and Flower Initiation in Phalaenopsis

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