Integration of Spatial and Temporal Information During Floral Induction in
            <i>Arabidopsis</i>

Wigge, Philip A.; Kim, Min Chul; Jaeger, Katja E.; Busch, Wolfgang; Schmid, Markus; Lohmann, Jan U.; Weigel, Detlef

doi:10.1126/science.1114358

Cited by 1,284 publications

(1,413 citation statements)

References 25 publications

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“…This indicates that VEG1 acts downstream of VEG2 and GIGAS and suggests that they participate in the activation of VEG1 expression. This seems particularly likely for GIGAS 16 , in view of the fact that its Arabidopsis homologue FLOWERING LOCUS T (FT) is a direct activator of the floral identity genes AP1 and FUL [32][33][34][35] , which are MADS-box genes from the same lineage as VEG1 (Supplementary Fig. S3).…”

Section: Veg1 Is Required To Make Secondary Inflorescencesmentioning

confidence: 99%

VEGETATIVE1 is essential for development of the compound inflorescence in pea

et al. 2012

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unravelling the basis of variation in inflorescence architecture is important to understanding how the huge diversity in plant form has been generated. Inflorescences are divided between simple, as in Arabidopsis, with flowers directly formed at the main primary inflorescence axis, and compound, as in legumes, where they are formed at secondary or even higher order axes. The formation of secondary inflorescences predicts a novel genetic function in the development of the compound inflorescences. Here we show that in pea this function is controlled by VEGETATIVE1 (VEG1), whose mutation replaces secondary inflorescences by vegetative branches. We identify VEG1 as an AGL79-like mADs-box gene that specifies secondary inflorescence meristem identity. VEG1 misexpression in meristem identity mutants causes ectopic secondary inflorescence formation, suggesting a model for compound inflorescence development based on antagonistic interactions between VEG1 and genes conferring primary inflorescence and floral identity. our study defines a novel mechanism to generate inflorescence complexity.

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Section: Veg1 Is Required To Make Secondary Inflorescencesmentioning

confidence: 99%

VEGETATIVE1 is essential for development of the compound inflorescence in pea

et al. 2012

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“…Therefore, increased CO protein promotes expression of FT only under LD. FT moves through phloem to the meristem, where it associates with FD, and the FT-FD complex activates expression of SOC1 and downstream floral identity genes, such as AP1 and LFY, to promote flowering (Abe et al, 2005;Corbesier et al, 2007;Michaels et al, 2005;Wigge et al, 2005;Yoo et al, 2005). However, in SD, CO protein peaks in the dark, where it is degraded through the COP1-SPA complex, resulting in a delayed flowering response.…”

Section: Introductionmentioning

confidence: 99%

NO FLOWERING IN SHORT DAY (NFL) is a bHLH transcription factor that promotes flowering specifically under short-day in Arabidopsis

et al. 2016

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Flowering in plants is a dynamic and synchronized process where various cues including age, day length, temperature and endogenous hormones fine-tune the timing of flowering for reproductive success. Arabidopsis thaliana is a facultative long day (LD) plant where LD photoperiod promotes flowering. Arabidopsis still flowers under shortday (SD) conditions, albeit much later than in LD conditions. Although factors regulating the inductive LD pathway have been extensively investigated, the non-inductive SD pathway is much less understood. Here, we identified a key basic helix-loop-helix transcription factor called NFL (NO FLOWERING IN SHORT DAY) that is essential to induce flowering specifically under SD conditions in Arabidopsis. nfl mutants do not flower under SD conditions, but flower similar to the wild type under LD conditions. The no-flowering phenotype in SD is rescued either by exogenous application of gibberellin (GA) or by introducing della quadruple mutants in the nfl background, suggesting that NFL acts upstream of GA to promote flowering. NFL is expressed at the meristematic regions and NFL is localized to the nucleus. Quantitative RT-PCR assays using apical tissues showed that GA biosynthetic genes are downregulated and the GA catabolic and receptor genes are upregulated in the nfl mutant compared with the wild type, consistent with the perturbation of the endogenous GA biosynthetic and catabolic intermediates in the mutant. Taken together, these data suggest that NFL is a key transcription factor necessary for promotion of flowering under non-inductive SD conditions through the GA signaling pathway.

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“…The transmissible flowering stimulus has been hypothetically called 'florigen', and the identification of it is one of the major goals of the flowering study. Recently, mRNA or protein of the floral pathway integrator FLOWERING LOCUS T (FT ) was reported to be a transmissible flowering stimulus in A. thaliana (Abe et al 2001, Huang et al 2005, Wigge et al 2005). We do not have currently any informations to argue whether P. frutescens has the same regulating mechanism as does A. thaliana.…”

Section: The Process Of Flowering Induced By 5-azacytidinementioning

confidence: 99%

Flowering induced by 5‐azacytidine, a DNA demethylating reagent in a short‐day plant, Perilla frutescens var. crispa

Kondo

Ozaki

Itoh

et al. 2006

Physiologia Plantarum

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Treatment with 5-azacytidine, a DNA demethylating reagent, induced flowering in Perilla frutescens (L.) Britton var. crispa (Thunb. ex Murray) Decne. ex L. H. Bailey, an absolute short-day plant under long days. The 5-azacytidine treatment induced slight suppression of vegetative growth but had no obvious effect on any other phenotypes. The Southern hybridization analysis of the genomic DNA isolated from the leaves of 5-azacytidine-treated plants and digested with restriction enzyme, methylation-insensitive Msp I or methylation-sensitive Hpa II with P. frutescens 25S-18S rDNA intergenic spacer probe indicated that the 5-azacytidine treatment caused demethylation of the genomic DNA. The 5-azacytidine-induced flowering was delayed as compared with the short day-induced flowering. Flowers were formed even at the lower nodes which had not been directly treated with 5-azacytidine. The results suggest that DNA demethylation induced flowering by inducing the production of a transmissible flowering stimulus in P. frutescens.

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Integration of Spatial and Temporal Information During Floral Induction in Arabidopsis

Cited by 1,284 publications

References 25 publications

VEGETATIVE1 is essential for development of the compound inflorescence in pea

VEGETATIVE1 is essential for development of the compound inflorescence in pea

NO FLOWERING IN SHORT DAY (NFL) is a bHLH transcription factor that promotes flowering specifically under short-day in Arabidopsis

Flowering induced by 5‐azacytidine, a DNA demethylating reagent in a short‐day plant, Perilla frutescens var. crispa

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