Redei, G.P. () Supervital mutants of Arabidopsis. Genetics, 47 Simpson, G.G. &Dean, C. () Arabidopsis, the Rosetta stone of flowering time?Science . casein protein kinase 2 alphasubunit genes. Theor Appl Genet — Simpson GG, Dean C () Arabidopsis, the Rosetta Stone of flowering time. [CrossRef] [PubMed] Simpson, G.G.; Dean, C. Arabidopsis, the Rosetta stone of flowering time? Science , , – [CrossRef] [PubMed] Valentin, F.L. .

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In addition, studying the photoperiodic flowering mechanism is important for understanding a major plant reproduction mechanism, one that is directly applicable to improvement in crop yields. The day-length-insensitive tiem phenotype of tfl2 indicated that the TFL2 gene might function in the photoperiod pathway. Services Alert me when this article is cited Alert me if a correction is posted Similar articles in this series Similar articles in Web of Science Similar articles in PubMed Download to citation manager.

Epigenetic Regulation in the Control of Flowering

However, we made a double mutant with gigantea gianother late-flowering mutant that is involved in the photoperiod pathway and is epistatic to co Flowerig et al. For gene-expression analyses, plants were grown on 0. A genetic and physiological analysis of late flowering mutants in Arabidopsis thaliana.

Annu Rev Genet 37, The day-length-insensitive early-flowering phenotype of tfl2 is due to ectopic expression of FT at an early developmental stage.


In order to examine whether TFL2 can function as a chromatin-associated gene silencing factor, we introduced it into an swi6 — mutant thd fission yeast Fig. We first focused on the early-flowering phenotype of tfl2which is relatively insensitive to day length, because this phenotype suggests that TFL2 gene may function to repress target gene s involved in dtone photoperiod pathway.

Curr Opin Plant Biol 6, By contrast, early-flowering mutants are useful to find genes that function as repressors of flower-promoting genes. Citations Publications citing this paper.

Article Category Epigenetic Regulation of Phenotypes. FEBS Lett We mapped arabidopsie insertion point of tfl close to the TFL2 locus, near the simple sequence length polymorphism marker nga on chromosome 5 Larsson et al.

Arabidopsis, the Rosetta stone of flowering time?

Other mutant phenotypes of tfl2 were not as suppressed as the flowering time; that is, the leaf shape of the double mutant showed an intermediate phenotype of tfl2 and ftand the apical dominance was weaker than in ft mutants see Fig.

Nat Rev Genet 13, Taken together, these results suggest that, clowering the flowering pathway, TFL2 represses only the expression of FT and has very little effect on other flowering-associated genes.

Curr Opin Plant Biol 15, Citing articles via Web of Science Crosses with tfl obtained from the Stine Biological Resource Center showed that tfl is allelic to tfl Larsson et al. Misexpression of these genes in the leaves may cause the curled leaf phenotype seen in tfl2 mutants. New Phytol From its sequence homology to Thd, its subnuclear localization and its ability to complement swi6 mutation, TFL2 may function as an HP1 that modifies chromatin structure to maintain genes in a silent state.


Flowering pathways in the model plant Arabidopsis Various environmental factors influence the transition from vegetative to reproductive growth flowering. RNA in situ hybridization experiments showed that TFL2 transcripts accumulated in proliferating cells in the meristematic tissues of vegetative, inflorescence, and floral organs Fig. Plant Cell Environ 35, We have been working on the mechanisms of photoperiodic flowering response in Arabidopsis thalianawhich is currently the most suitable organism for studying molecular mechanisms of day-length measurement.

Genetic architecture of flowering time differentiation between locally adapted populations of Arabidopsis thaliana. Showing of extracted citations. The points of the pathways are interrelated.

Arabidopsis, the Rosetta Stone of Flowering Time? – Dimensions

In transgenic Arabidopsis carrying a TFL2: Thus, circadian-clock regulated CO transcription and light-mediated CO protein stability regulation are the core of the day-length sensing mechanisms.

This suggests that the TFL2 gene itself may regulate fowering developmental processes. The difference between LD and SD was more obvious when the plants were grown on plates; that is, while the increase was

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