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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Abstract Floral transition should be strictly regulated because it is one of the most critical developmental processes in plants.

Epigenetic Regulation in the Control of Flowering

A yeast strain carrying an swi6- mutation Allshire et al. A current mechanistic model for day-length measurement in Arabidopsis. Rosetya these stages and in these organs, TFL2 is actively transcribed but target genes are derepressed in response to the activators. We used the Col ecotype for genetic and gene expression analyses unless otherwise indicated. One is entraining the phase of circadian clock oscillation.

This drastic difference in developmental patterns enables us to assess the effects of genetic modification on the photoperiodic response more precisely. Arabidopsis mutants showing an altered response to vernalization. Plant crossing was carried out by manual cross-pollination.


We constructed the g TFL2: Both CO and FT orthologs exist in long-day and short-day plants. TFL2 gene is a unique gene in the Arabidopsis genome that encodes a protein with extensive homology to HP1. Photochem Photobiol 9, In order to examine whether TFL2 can function as a chromatin-associated gene silencing factor, we introduced it into an swi6 — mutant of fission yeast Fig.

CrossRef Medline Google Scholar. Skip to search form Skip to main content. Chronobiol Int 20, Five and four optical sections were projected, respectively. Analysis of the molecular basis of flowering time variation in Arabidopsis accessions.

Caroline Dean – Google Scholar Citations

Related articles in Web of Science Google Scholar. GI is a large nuclear protein without known functional domain [42], and FKF1 is a LOV domain containing a blue-light photoreceptor that regulates protein arabidopxis [43,44]. B—C Confocal microscopy images of root meristem cells of transgenic Arabidopsis carrying 35S:: Phytohormones and age, two internal cues, also induce flowering.

These proteins are known to maintain genes in a silent state. The other question that should oof addressed in future studies is how the ubiquitously expressed TFL2 gene can repress target genes in the inactivated phase and derepress in the activated phase of the plant. The pleiotropic phenotypes of tfl2 mutants suggest that TFL2 function is required for the regulation of multiple genes, and indeed we found that several floral homeotic genes are upregulated in arahidopsis tfl2 mutant.


This framework provides the basis to understand the evolution of different reproductive arabiropsis and how floral pathways interact through seasonal progression.

Until flower stage 4 [floral stages are according to Smyth et al. Email alerts New issue alert.

Rsoetta changes of flower, however, are not observed in tfl2 mutants. In plants, mutants of chromatin factors show pleiotropic phenotypes, whereas in animals defects in these homologous genes are lethal Wagner Floral transition should be strictly regulated because it is one of the most critical developmental processes in plants.

B Top view of day-old tfl;ft-1 left and ft-1 right plants. Topics Discussed in This Paper. Kainou for technical assistance.