Functional Divergence of the Arabidopsis Florigen-Interacting bZIP Transcription Factors FD and FDP

Romera-Branchat, Maida; Severing, Edouard; Pocard, Chloé; Ohr, Hyonhwa; Née, Guillaume; Martínez-Gallegos, Rafael; Jang, Seonghoe; Andrés, Fernando; Madrigal, Pedro; Coupland, George

doi:10.1016/j.celrep.2020.107717

Cited by 58 publications

(66 citation statements)

References 95 publications

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“…[ 14 ] FDP has a complementary expression pattern with FD in the SAM during floral transition. [ 171,172 ] Although fdp‐1 and fdp‐2 , the point mutations in the DNA‐binding domain of FDP, cause a slightly late‐flowering phenotype and could enhance the late‐flowering phenotype of fd‐2 mutants, the new isolated CRISPR‐Cas9‐induced null alleles of FDP flower earlier than wild type in long days. [ 171,172 ] The alleles of fdp‐1 and fdp‐2 might retain the activity of FDP and cause a delay in flowering time dominantly.…”

Section: Regulation Of Plant Architecture By Ft and Tfl1mentioning

confidence: 99%

“…[ 171,172 ] Although fdp‐1 and fdp‐2 , the point mutations in the DNA‐binding domain of FDP, cause a slightly late‐flowering phenotype and could enhance the late‐flowering phenotype of fd‐2 mutants, the new isolated CRISPR‐Cas9‐induced null alleles of FDP flower earlier than wild type in long days. [ 171,172 ] The alleles of fdp‐1 and fdp‐2 might retain the activity of FDP and cause a delay in flowering time dominantly. Genome‐wide analysis of FD‐ and FDP‐binding sites shows that both FD and FDP are enriched in G‐box sequences, whereas only FD targets genes relevant to flowering time regulation.…”

Section: Regulation Of Plant Architecture By Ft and Tfl1mentioning

confidence: 99%

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Regulation by FLOWERING LOCUS T and TERMINAL FLOWER 1 in Flowering Time and Plant Architecture

Xuan

Jiang

et al. 2021

Small Structures

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The conversion from vegetative to inflorescence shoot apical meristem is one of the key developmental switches in flowering plants. This transition is modulated by various environmental and endogenous stimuli and controlled by sophisticated regulatory networks. Regulation of flowering time and inflorescence architecture has a great impact on plant reproductive success and significantly influences plant biomass and fitness. FLOWERING LOCUS T (FT), a mobile protein identified as a major component of florigen, promotes the transition to flowering, whereas its homologous protein TERMINAL FLOWER 1 (TFL1) functions oppositely. Studies in various species reveal that FT and TFL1 play universal and multifaceted roles in a wide range of developmental processes in plants. Hence, modulations of FT/TFL1 and their regulatory pathways have a considerable impact on plant development and crop domestication. Herein, an overview of the molecular basis underlying the regulation of FT/TFL1 expression and modulation of their protein trafficking and the relevant mechanisms in flowering time control and meristem development is provided. Whenever applicable, their functional conservation and divergence in various plant species are also discussed.

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Section: Regulation Of Plant Architecture By Ft and Tfl1mentioning

confidence: 99%

Section: Regulation Of Plant Architecture By Ft and Tfl1mentioning

confidence: 99%

Regulation by FLOWERING LOCUS T and TERMINAL FLOWER 1 in Flowering Time and Plant Architecture

Xuan

Jiang

et al. 2021

Small Structures

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“…Of the two fully male-specific genes ( Figure 5B), YY_140950.1 encodes a nucleic acid binding protein. The other gene, YY_141140.1, encodes a basic leucine zipper (bZIP) protein required for the positive regulation of flowering (Romera-Branchat et al, 2020). The presence of both gene sequences was restricted to the male in spinach ( Figure S14A).…”

Section: Gene Contents Of the Sex Determination Region Of The X And Ymentioning

confidence: 99%

The female (XX) and male (YY) genomes provide insights into the sex determination mechanism in spinach

She

Liu

et al. 2020

Preprint

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Sexual reproduction is the primary means of reproduction for the vast majority of macroscopic organisms, including almost all animals and plants. Sex chromosomes are predicted to play a central role in sexual dimorphism. Sex determination in spinach is controlled by a pair of sex chromosomes. However, the mechanisms of sex determination in spinach remain poorly understand. Here, we assembled the genomes of both a female (XX) and a male (YY) individual of spinach, and the genome sizes were 978 Mb with 28,320 predicted genes and 926 Mb with 26,537 predicted genes, respectively. Based on reported sex-linked markers, chromosomes 4 of the female and male genome were defined as the X and Y chromosomes, and a 10 Mb male-specific region of the Y chromosome (MSY) from approximately 95– 105 Mb, was identified that contains abundant transposable elements (92.32%). Importantly, a large-scale inversion of about 13 Mb in length was detected on the X chromosome, corresponding to ~9 Mb and ~4 Mb on the Y chromosome, which were located on both sides of the MSY with two distinct evolutionary strata. Almost all sex-linked/Y-specific markers were enriched on the inversions/MSY, suggesting that the flanked inversions might result in recombination suppression between the X and Y chromosomes to maintain the MSY. Forty-nine genes within the MSY had functional homologs elsewhere in the autosomal region, suggesting movement of genes onto the MSY. The X and Y chromosomes of spinach provide a valuable resource for investigating spinach sex chromosomes evolution from wild to cultivated spinach and also provide a broader understanding of the sex determination model in the Amaranthaceae family.

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“…The paralogous proteins FLOWERING LOCUS T (FT) and TWIN SISTER OF FT (TSF) represent the output of this pathway ( Kardailsky et al, 1999 ; Kobayashi et al, 1999 ; Yamaguchi et al, 2005 ). FT and TSF are transcribed specifically under LDs in the leaf vasculature, and the FT protein is transported to the SAM, where it interacts with 14-3-3 proteins and a bZIP transcription factor, FD, to promote the transcription of floral integrator genes ( Abe et al, 2005 ; Abe et al, 2019 ; Collani et al, 2019 ; Corbesier et al, 2007 ; Jaeger and Wigge, 2007 ; Mathieu et al, 2007 ; Romera-Branchat et al, 2020 ; Tamaki et al, 2007 ; Taoka et al, 2011 ). The earliest known gene to respond directly to FT/FD at the SAM is SUPPRESSOR OF OVEREXPRESSION OF CONSTANS 1 ( SOC1 ) that encodes a MADS-domain type transcription factor ( Lee et al, 2000 ; Samach et al, 2000 ).…”

Section: Introductionmentioning

confidence: 99%

Regulation of shoot meristem shape by photoperiodic signaling and phytohormones during floral induction of Arabidopsis

Kinoshita

Vayssières

Richter

et al. 2020

eLife

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Floral transition, the onset of plant reproduction, involves changes in shape and identity of the shoot apical meristem (SAM). The change in shape, termed doming, occurs early during floral transition when it is induced by environmental cues such as changes in day-length, but how it is regulated at the cellular level is unknown. We defined the morphological and cellular features of the SAM during floral transition of Arabidopsis thaliana. Both cell number and size increased during doming, and these changes were partially controlled by the gene regulatory network (GRN) that triggers flowering. Furthermore, dynamic modulation of expression of gibberellin (GA) biosynthesis and catabolism enzymes at the SAM contributed to doming. Expression of these enzymes was regulated by two MADS-domain transcription factors implicated in flowering. We provide a temporal and spatial framework for integrating the flowering GRN with cellular changes at the SAM and highlight the role of local regulation of GA.

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Functional Divergence of the Arabidopsis Florigen-Interacting bZIP Transcription Factors FD and FDP

Cited by 58 publications

References 95 publications

Regulation by FLOWERING LOCUS T and TERMINAL FLOWER 1 in Flowering Time and Plant Architecture

Regulation by FLOWERING LOCUS T and TERMINAL FLOWER 1 in Flowering Time and Plant Architecture

The female (XX) and male (YY) genomes provide insights into the sex determination mechanism in spinach

Regulation of shoot meristem shape by photoperiodic signaling and phytohormones during floral induction of Arabidopsis

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