Regulatory principles of photoperiod-driven clock function in plants DOI Creative Commons

Alberto González-Delgado,

José M. Jiménez‐Gómez, Krzysztof Wabnik

et al.

Trends in Plant Science, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

The circadian clock provides a fundamental timing mechanism for plant fitting to seasonal changes in the photoperiod. Although photoperiodic regulation of developmental transition has been studied several species, our understanding core parallelisms across species is sparse. Here we present comparative analysis networks by identifying common regulatory principles that govern key genes transition. Using time-course transcriptomic datasets from long-day plants and short-day taken different photoperiods, propose model integrates minimal set components predict necessary conditions governing species-specific outputs. This study identifies patterns associated with function plants, linking photoperiod interpretation architecture.

Language: Английский

CONSTANS, a HUB for all seasons: How photoperiod pervades plant physiology regulatory circuits DOI Creative Commons
J. Romero, Gloria Serrano, Carolina Camacho‐Fernández

et al.

The Plant Cell, Journal Year: 2024, Volume and Issue: 36(6), P. 2086 - 2102

Published: March 21, 2024

Abstract How does a plant detect the changing seasons and make important developmental decisions accordingly? do they incorporate daylength information into their routine physiological processes? Photoperiodism, or capacity to measure daylength, is crucial aspect of development that helps plants determine best time year vital decisions, such as flowering. The protein CONSTANS (CO) constitutes central regulator this sensing mechanism, not only activating florigen production in leaves but also participating many aspects which seasonality important. Recent discoveries place CO center gene network can length day confer seasonal input physiology senescence, seed size, circadian rhythms. In review, we discuss importance structure, function, evolutionary mechanisms embryophytes have developed annual physiology.

Language: Английский

Citations

9
Light Regulation of Shoot Architecture in Horticultural Crops DOI Creative Commons
Changan Zhu, Hannah Rae Thomas, Huijia Kang

et al.

Horticultural Plant Journal, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

Citations

1
The Function of Florigen in the Vegetative-to-Reproductive Phase Transition in and around the Shoot Apical Meristem DOI Creative Commons
Hiroyuki Tsuji,

Moeko Sato

Plant and Cell Physiology, Journal Year: 2024, Volume and Issue: 65(3), P. 322 - 337

Published: Jan. 5, 2024

Abstract Plants undergo a series of developmental phases throughout their life-cycle, each characterized by specific processes. Three critical features distinguish these phases: the arrangement primordia (phyllotaxis), timing differentiation (plastochron) and characteristics lateral organs axillary meristems. Identifying unique molecular phase, determining triggers that cause transitions understanding mechanisms underlying are keys to gleaning complete plant development. During vegetative shoot apical meristem (SAM) facilitates continuous leaf stem formation, with development as hallmark. The transition reproductive phase induces significant changes in processes, driven mainly protein FT (FLOWERING LOCUS T) Arabidopsis proteins encoded orthologs, which specified ‘florigen’. These synthesized leaves transported SAM, act primary flowering signal, although its impact varies among species. Within florigen integrates other signals, culminating changes. This review explores central question how SAM. Future research may combine studies, potentially revealing florigen-induced

Language: Английский

Citations

6
Genomic identification of the NF-Y gene family in apple and functional analysis of MdNF-YB18 involved in flowering transition DOI
Cai Gao,

Pengyan Wei,

Zushu Xie

et al.

Molecular Breeding, Journal Year: 2024, Volume and Issue: 45(1)

Published: Dec. 24, 2024

Language: Английский

Citations

6
Disrupting FKF1 homodimerization increases FT transcript levels in the evening by enhancing CO stabilization DOI Creative Commons

S Cho,

Jameela Lokhandwala,

J. Park

et al.

Plant Cell Reports, Journal Year: 2024, Volume and Issue: 43(5)

Published: April 18, 2024

Abstract Key message FKF1 dimerization is crucial for proper FT levels to fine-tune flowering time. Attenuating homodimerization increased CO abundance by enhancing its COP1 binding, thereby accelerating under long days. In Arabidopsis ( thaliana ), the blue-light photoreceptor (FLAVIN-BINDING, KELCH REPEAT, F-BOX 1) plays a key role in inducing expression of FLOWERING LOCUS T encoding main florigenic signal plants, late afternoon long-day conditions (LDs) forming dimers with regulators. Although structural studies have unveiled variant (FKF1 I160R) that disrupts homodimer formation vitro, mechanism which disrupted regulates time remains elusive. this study, we determined attenuation enhances evening promoting stability CONSTANS (CO), primary activator , afternoon, contributing early flowering. contrast wild-type FKF1, introducing I160R into fkf1 mutant led LDs. addition, exhibited diminished while interaction GIGANTEA (GI), modulator function, was enhanced Furthermore, level LDs binding COP1, an E3 ubiquitin ligase responsible degradation. These findings suggest regulation and heterodimerization allows plants finely adjust around dusk modulating interactions GI COP1.

Language: Английский

Citations

5
Genetic and epigenetic basis of phytohormonal control of floral transition in plants DOI
Xiaoxiao Li, Chuyu Lin,

Chenghao Lan

et al.

Journal of Experimental Botany, Journal Year: 2024, Volume and Issue: 75(14), P. 4180 - 4194

Published: March 8, 2024

The timing of the developmental transition from vegetative to reproductive stage is critical for angiosperms, and fine-tuned by integration endogenous factors external environmental cues ensure successful reproduction. Plants have evolved sophisticated mechanisms response diverse or stress signals, these can be mediated hormones coordinate flowering time. Phytohormones such as gibberellin, auxin, cytokinin, jasmonate, abscisic acid, ethylene, brassinosteroids cross-talk among them are precise regulation Recent studies model plant Arabidopsis revealed that transcription epigenetic regulators play key roles in relation phytohormones regulate floral transition. This review aims summarize our current knowledge genetic underlie phytohormonal control Arabidopsis, offering insights into how processes regulated their implications biology.

Language: Английский

Citations

4
Interplay of light and abscisic acid signaling to modulate plant development DOI
Kalyan Mahapatra, Shubhi Dwivedi, Arpan Mukherjee

et al.

Journal of Experimental Botany, Journal Year: 2024, Volume and Issue: 76(3), P. 730 - 745

Published: April 25, 2024

Exogenous light cues and the phytohormone abscisic acid (ABA) regulate several aspects of plant growth development. In recent years, role crosstalk between ABA signaling pathways in regulating different physiological processes has become increasingly evident. This includes regulation germination early seedling development, control stomatal development conductance, growth, roots, buds, branches, flowering. Light cascades have various convergence points at both DNA protein levels. The molecular involves factors such as HY5, COP1, PIFs, BBXs that integrate with components PYL receptors ABI5. particular, ABI5 PIF4 promoters are key 'hotspots' for integrating these two pathways. Plants acquired before they colonized land almost 500 million years ago. this review, we discuss advances interplay provide an overview evolution

Language: Английский

Citations

4
A florigen-expressing subpopulation of companion cells expresses other small proteins and reveals a nitrogen-sensitive FT repressor DOI Open Access
Hiroshi Takagi, Shogo Ito, Jae Sung Shim

et al.

Published: Jan. 3, 2025

The precise onset of flowering is crucial to ensure successful plant reproduction. gene FLOWERING LOCUS T ( FT ) encodes florigen, a mobile signal produced in leaves that initiates at the shoot apical meristem. In response seasonal changes, induced phloem companion cells located distal leaf regions. Thus far, detailed molecular characterization -expressing has been lacking. Here, we used bulk nuclei RNA-seq and single RNA (snRNA)-seq investigate expression other cells. Our demonstrated cotyledons true differed transcriptionally. Within leaves, our snRNA-seq analysis revealed with high form unique cluster which many genes involved ATP biosynthesis are highly upregulated. also expresses encoding small proteins, including stem growth inducer FPF1-LIKE PROTEIN 1 (FLP1) anti-florigen BROTHER OF AND TFL1 (BFT). addition, found promoters co-expressed were enriched for consensus binding motifs NITRATE-INDUCIBLE GARP-TYPE TRANSCRIPTIONAL REPRESSOR (NIGT1). Overexpression paralogous NIGT1.2 NIGT1.4 repressed significantly delayed under nitrogen-rich conditions, consistent NIGT1s acting as nitrogen-dependent repressors. Taken together, results demonstrate major show distinct profile suggests these may produce multiple systemic signals regulate development.

Language: Английский

Citations

0
A florigen-expressing subpopulation of companion cells expresses other small proteins and reveals a nitrogen-sensitive FT repressor DOI Open Access
Hiroshi Takagi, Shogo Ito, Jae Sung Shim

et al.

Published: Jan. 3, 2025

The precise onset of flowering is crucial to ensure successful plant reproduction. gene FLOWERING LOCUS T ( FT ) encodes florigen, a mobile signal produced in leaves that initiates at the shoot apical meristem. In response seasonal changes, induced phloem companion cells located distal leaf regions. Thus far, detailed molecular characterization -expressing has been lacking. Here, we used bulk nuclei RNA-seq and single RNA (snRNA)-seq investigate expression other cells. Our demonstrated cotyledons true differed transcriptionally. Within leaves, our snRNA-seq analysis revealed with high form unique cluster which many genes involved ATP biosynthesis are highly upregulated. also expresses encoding small proteins, including stem growth inducer FPF1-LIKE PROTEIN 1 (FLP1) anti-florigen BROTHER OF AND TFL1 (BFT). addition, found promoters co-expressed were enriched for consensus binding motifs NITRATE-INDUCIBLE GARP-TYPE TRANSCRIPTIONAL REPRESSOR (NIGT1). Overexpression paralogous NIGT1.2 NIGT1.4 repressed significantly delayed under nitrogen-rich conditions, consistent NIGT1s acting as nitrogen-dependent repressors. Taken together, results demonstrate major show distinct profile suggests these may produce multiple systemic signals regulate development.

Language: Английский

Citations

0
CRF12 specifically regulates the flowering time of Arabidopsis thaliana under non‐inductive conditions DOI Open Access
Xia Li, Siyu Fang, Wanqin Chen

et al.

The Plant Journal, Journal Year: 2025, Volume and Issue: 121(3)

Published: Feb. 1, 2025

The flowering time of Arabidopsis thaliana, a model plant, is significantly accelerated when exposed to long-day (LD) conditions, as it typical LD plant. Consequently, the investigation regulatory network in A. thaliana under conditions has garnered considerable attention study signals, resulting significant breakthrough. While many plants, including exhibit delayed non-inductive short-day (SD) they are still capable flowering. Nevertheless, research on regulation induction plants SD been limited. This demonstrated involvement CYTOKININ RESPONSE FACTORS 12 (CRF12) conditions. Analysis expression patterns revealed that activation CRF12 and protein stability occurred exclusively environments. Molecular genetic analyses photoperiod h light darkness, CRF12, CONSTANS (CO), TARGET OF EAT 1/2 (TOE1/2) engage competitive interactions regulate time, while 8 16 modulates by inhibiting activity TOE1/2.

Language: Английский

Citations

0