The Arabidopsis thalianaCONSTANS-LIKE 4 (COL4) – A Modulator of Flowering Time

Steinbach, Yvonne

doi:10.3389/fpls.2019.00651

Cited by 55 publications

(34 citation statements)

References 89 publications

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“…B-box protein5, BBX6, and BBX7 regulate flowering by controlling CO and/or FT at the transcriptional level (Figure 1), whereas BBX5 transcriptionally suppresses FT under both long-day and short-day conditions. Hence, BBX5 loss-of-function mutants flower relatively early, while overexpression of BBX5 delays flowering under both long-day and short-day conditions (Steinbach 2019). B-box protein6 increases FT expression and promotes floral transition specifically under short days but not under long days (Hassidim et al 2009).…”

Section: Involvement Of Bbx In Floral Regulationmentioning

confidence: 99%

“…CO, BBX6, and BBX24 positively control FT expression, while BBX4, BBX5, BBX7, and BBX32 repress FT transcription. B-box protein5 negatively controls FT expression under both long-day and short-day conditions (Steinbach 2019). B-box protein6 and BBX24 affect FT expression specifically under short days, while CO, BBX4, BBX7, and BBX32 mediate FT transcription under long days (Cheng and Wang 2005;Hassidim et al 2009;Li et al 2014;Tripathi et al 2017).…”

Section: Involvement Of Bbx In Floral Regulationmentioning

confidence: 99%

“…For example, CO expression peaks in the afternoon under long days (Suarez-Lopez et al 2001). Moreover, the transcription of both BBX5 and BBX7 is elevated during the night but reduced during the day (Cheng and Wang 2005;Steinbach 2019), whereas the transcript levels of BBX4, BBX6, BBX24, and BBX32 peak specifically in the early morning (Smith et al 2004;Hassidim et al 2009;Li et al 2014;Tripathi et al 2017). It is therefore tempting to speculate that these BBXs might function at precisely different time points to control flowering under diurnal conditions.…”

Section: Involvement Of Bbx In Floral Regulationmentioning

confidence: 99%

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B‐box proteins: Pivotal players in light‐mediated development in plants

Song

Bian

Liu

et al. 2020

JIPB

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Light signals mediate a number of physiological and developmental processes in plants, such as flowering, photomorphogenesis, and pigment accumulation. Emerging evidence has revealed that a group of B‐box proteins (BBXs) function as central players in these light‐mediated developmental processes. B‐box proteins are a class of zinc‐coordinated transcription factors or regulators that not only directly mediate the transcription of target genes but also interact with various other factors to create a complex regulatory network involved in the precise control of plant growth and development. This review summarizes and highlights the recent findings concerning the critical regulatory functions of BBXs in photoperiodic flowering, light signal transduction and light‐induced pigment accumulation and their molecular modes of action at the transcriptional and post‐translational levels in plants

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Section: Involvement Of Bbx In Floral Regulationmentioning

confidence: 99%

Section: Involvement Of Bbx In Floral Regulationmentioning

confidence: 99%

Section: Involvement Of Bbx In Floral Regulationmentioning

confidence: 99%

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B‐box proteins: Pivotal players in light‐mediated development in plants

Song

Bian

Liu

et al. 2020

JIPB

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“…For T. hernandezii (area B, Fig. 3i) enriched TF families included: 1) C2C2 GATA that are regulated by the B class flower organ identity genes (Zik and Irish, 2003) and affect chlorophyll synthesis, relevant to green flowers (Bi et al, 2005); 2) SAP that regulate organ size in these small flowers (Wang et al, 2016) and affect ovule development (Byzova et al, 1999) and 3) C2C2 CO-like that control flowering (Steinbach, 2019). GRF family was a promising candidate for hermaphrodite flowers of T. hernandezii (Fig.…”

Section: Ariasmentioning

confidence: 99%

Facilitating candidate gene discovery in an emerging model plant lineage: Transcriptomic and genomic resources for Thalictrum (Ranunculaceae)

Arias

Riaño-Pachón

Stilio

2020

Preprint

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The plant genus Thalictrum is a representative of the order Ranunculales (a sister lineage to all other Eudicots) with diverse floral morphologies, encompassing four sexual systems and two pollination modes. Previous studies suggest multiple transitions from insect to wind pollination within this genus, in association with polyploidy and unisexual flowers, but the underlying genes remain unknown. We generated a draft reference genome for Thalictrum thalictroides, a representative of a clade with ancestral floral traits (diploidy, hermaphroditism, and insect pollination) and a model for functional studies. To facilitate candidate gene discovery in flowers with different sexual and pollination systems we also generated floral transcriptomes of T.thalictroides and of wind-pollinated, andromonoecious (staminate and hermaphroditic flowers on the same plant) T. hernandezii.The T. thalictroides draft genome assembly consisted of 44,860 contigs (N50=12,761 bp. and 243 Mbp. total length) and contained 84.5% conserved embryophyte single-copy genes. Floral transcriptomes from Illumina sequencing and de novo assembly contained representatives of most eukaryotic core genes (approximately 80%), with most of their genes falling into common orthologous groups (orthogroups). Simple Sequence Repeat (SSR) motifs were also identified, which together with the single-copy genes constitute a resource for population-level or phylogenetic studies. Finally, to validate the utility of these resources, putative candidate genes were identified for the different floral morphologies using stepwise dataset comparisons. In conclusion, we present genomic and transcriptomic resources for Thalictrum, including the first genome of T. thalictroides and potential candidate genes for flowers with distinct sexual and pollination systems.

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“…Extensive gene duplication events have occurred in this gene family, resulting in 16 other CO-like (COL) genes with different functions 25,26 . Among them, COL1 and COL2 have little effect on the flowering time, while COL3, COL4, and COL9 represent flowering repressors [27][28][29] . The overexpression of COL8 delays flowering under LDs, whereas COL5 promotes flowering 30,31 .…”

mentioning

confidence: 99%

The Response of COL and FT Homologues to Photoperiodic Regulation in Carrot (Daucus carota L.)

Liu

Chen

et al. 2020

Sci Rep

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carrot (Daucus carota L.) is a biennial plant requiring vernalization to induce flowering, but long days can promote its premature bolting and flowering. The basic genetic network controlling the flowering time has been constructed for carrot, but there is limited information on the molecular mechanisms underlying the photoperiodic flowering response. The published carrot genome could provide an effective tool for systematically retrieving the key integrator genes of GIGANTEA (GI), CONSTANS-LIKE (COL), FLOWERING LOCUS T (FT), and SUPPRESSOR OF OVEREXPRESSION OF CONSTANS 1 (SOC1) homologues in the photoperiod pathway. In this study, the bolting time of wild species "Songzi" (Ws) could be regulated by different photoperiods, but the orange cultivar "Amsterdam forcing" (Af) displayed no bolting phenomenon. According to the carrot genome and previous de novo transcriptome, 1 DcGI, 15 DcCOLs, 2 DcFTs, and 3 DcSOC1s were identified in the photoperiod pathway. The circadian rhythm peaks of DcGI, DcCOL2, DcCOL5a, and DcCOL13b could be delayed under long days (LDs). The peak value of DcCOL2 in Af (12.9) was significantly higher than that in Ws (6.8) under short day (SD) conditions, and was reduced under LD conditions (5.0). The peak values of DcCOL5a in Ws were constantly higher than those in Af under the photoperiod treatments. The expression levels of DcFT1 in Ws (463.0) were significantly upregulated under LD conditions compared with those in Af (1.4). These responses of DcCOL2, DcCOL5a, and DcFT1 might be related to the different bolting responses of Ws and Af. This study could provide valuable insights into understanding the key integrator genes in the carrot photoperiod pathway.

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The Arabidopsis thalianaCONSTANS-LIKE 4 (COL4) – A Modulator of Flowering Time

Cited by 55 publications

References 89 publications

B‐box proteins: Pivotal players in light‐mediated development in plants

B‐box proteins: Pivotal players in light‐mediated development in plants

Facilitating candidate gene discovery in an emerging model plant lineage: Transcriptomic and genomic resources for Thalictrum (Ranunculaceae)

The Response of COL and FT Homologues to Photoperiodic Regulation in Carrot (Daucus carota L.)

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