aBIOTECH, Год журнала: 2021, Номер 2(2), С. 176 - 189
Опубликована: Март 27, 2021
Язык: Английский
Molecular Plant, Год журнала: 2020, Номер 13(3), С. 363 - 385
Опубликована: Фев. 14, 2020
Язык: Английский
Процитировано
103
Plant Cell & Environment, Год журнала: 2025, Номер unknown
Опубликована: Фев. 26, 2025
ABSTRACT GIGANTEA ( GI ) is a plant‐specific protein that functions in many physiological processes and signalling networks. In Arabidopsis, has central role circadian oscillators regulating the abundance of ZEITLUPE TIMING OF CAB EXPRESSION 1 proteins essential for photoperiodic regulation flowering. We have investigated how ortholgues this component Arabidopsis contribute to rhythms yield traits, including heading (flowering) wheat. find core wheat necessary maintain robust oscillations chlorophyll fluorescence oscillator transcript abundance. The predicted lack functional results later flowering both long days short controlled environment conditions. Our support extend previous work, which suggests pathways by photoperiodism regulates are not fully conserved between Understanding molecular basis important breeders looking manipulate time develop new elite, high‐yielding cultivars.
Язык: Английский
Процитировано
1
Nature Communications, Год журнала: 2020, Номер 11(1)
Опубликована: Окт. 22, 2020
Abstract Plants transmit signals long distances, as evidenced in grafting experiments that create distinct rootstock-scion junctions. Noncoding small RNA is a signaling molecule graft transmissible, participating RNA-directed DNA methylation; but the meiotic transmissibility of graft-mediated epigenetic changes remains unclear. Here, we exploit MSH1 system Arabidopsis and tomato to introduce rootstock variation experiments. Introducing mutations dcl2 , dcl3 dcl4 msh1 disrupts siRNA production reveals RdDM targets methylation repatterning. Progeny from show enhanced growth vigor relative controls. This heritable enhancement-through-grafting phenotype RdDM-dependent, involving 1380 differentially methylated genes, many within auxin-related gene pathways. Growth associated with robust root progeny, auxin transport based on inhibitor assays. Large-scale field effects plant performance, over five generations, demonstrating agricultural potential variation.
Язык: Английский
Процитировано
59
International Journal of Molecular Sciences, Год журнала: 2020, Номер 21(24), С. 9700 - 9700
Опубликована: Дек. 18, 2020
Plants can react to drought stress by anticipating flowering, an adaptive strategy for plant survival in dry climates known as escape (DE). In Arabidopsis, the study of DE brought surface involvement abscisic acid (ABA) controlling floral transition. A central question concerns how and what spatial context ABA signals affect network. leaf, signaling affects flowering genes responsible production main florigen FLOWERING LOCUS T (FT). At shoot apex, FD FD-like transcription factors interact with FT FT-like proteins regulate responses. This knowledge will help separate general specific roles potential benefits both biology agriculture.
Язык: Английский
Процитировано
54
Molecular Plant, Год журнала: 2020, Номер 13(3), С. 459 - 470
Опубликована: Янв. 16, 2020
Язык: Английский
Процитировано
53
Genes, Год журнала: 2020, Номер 11(11), С. 1284 - 1284
Опубликована: Окт. 29, 2020
The circadian clock is the biological timekeeping system that governs approximately 24-h rhythms of genetic, metabolic, physiological and behavioral processes in most organisms. This oscillation allows organisms to anticipate adapt day–night changes environment. Molecular studies have indicated a transcription–translation feedback loop (TTFL), consisting transcriptional repressors activators, essential for function Arabidopsis thaliana (Arabidopsis). Omics using next-generation sequencers further revealed transcription factors TTFL directly regulate key genes implicated clock-output pathways. In this review, target clock-associated are summarized. network partly conserved among angiosperms. addition, clock-dependent structure discussed context plant behaviors adapting cycles.
Язык: Английский
Процитировано
52
The Plant Journal, Год журнала: 2024, Номер 118(2), С. 519 - 533
Опубликована: Янв. 6, 2024
SUMMARY Precise regulation of flowering time is critical for cereal crops to synchronize reproductive development with optimum environmental conditions, thereby maximizing grain yield. The plant‐specific gene GIGANTEA ( GI ) plays an important role in the control time, additional functions on circadian clock and plant stress responses. In this study, we show that loss‐of‐function mutants a photoperiod‐sensitive tetraploid wheat background exhibit significant delays heading under both long‐day (LD) short‐day photoperiods, stronger effects LD. However, interaction between photoperiod no longer observed isogenic lines carrying either photoperiod‐insensitive allele PHOTOPERIOD1 PPD1 or EARLY FLOWERING 3 ELF3 ), known repressor . These results suggest normal required differential effect different photoperiods. Using crosses mutant transgenic plants those genes pathway, accelerates by promoting LOCUS T1 FT1 expression via interactions , VERNALIZATION 2 VRN2 CONSTANS CO age‐dependent microRNA172‐ APETALA2 AP2 at transcriptional protein levels. Our study reveals conserved mechanisms Arabidopsis but also identifies specific distinctive vernalization pathways temperate grasses. provide valuable knowledge modulating engineering new varieties better adapted changing environment.
Язык: Английский
Процитировано
7
Proceedings of the National Academy of Sciences, Год журнала: 2019, Номер 116(43), С. 21893 - 21899
Опубликована: Окт. 9, 2019
Significance The circadian clock integrates environmental cues with internal biological processes to generate robust rhythms in almost all aspects of plant physiology. molecular mechanisms underlying the pervasive regulation physiology and development by are still being unraveled. Our study identifies protein GIGANTEA as a key regulator response gibberellins through pivotal factors signaling this hormone. Direct modulation hub components networks provides means which oscillator can effectively transduce timing information an extensive array physiological pathways.
Язык: Английский
Процитировано
50
PLANT PHYSIOLOGY, Год журнала: 2020, Номер 183(2), С. 686 - 699
Опубликована: Март 12, 2020
The circadian clock measures and conveys daylength information to control rhythmic hypocotyl growth in photoperiodic conditions achieve optimal fitness, but it operates through largely unknown mechanisms. Here, we show that Pseudo Response Regulators (PRRs) coordinate with the Evening Complex (EC), a transcriptional repressor complex within core oscillator, specifically regulate Arabidopsis (Arabidopsis thaliana). Intriguingly, distinct could shift expression phase extend duration of PRRs. Multiple lines evidence have further demonstrated PRRs directly bind promoters PHYTOCHROME-INTERACTING FACTOR4 (PIF4) PIF5 repress their expression, hence act as repressors positive regulators PIF4 PIF5. Importantly, mutation or truncation TIMING OF CAB EXPRESSION1 (TOC1) DNA binding domain, without compromising its physical interaction PIFs, still caused long under short days, highlighting essential role PRR-PIF module growth. Finally, genetic analyses are epistatic regulation Collectively, propose that, upon perceiving information, cooperate EC transcription together posttranslational PIF activities, thus forming regulatory network mediate clock-regulated
Язык: Английский
Процитировано
49
Physiologia Plantarum, Год журнала: 2020, Номер 169(3), С. 347 - 356
Опубликована: Март 17, 2020
Plant development displays a remarkable degree of plasticity and continuously adjusts to the plant's surroundings, process that is triggered by perception environmental cues such as light temperature. Transcription factors PHYTOCHROME-INTERACTING FACTOR (PIF) family have long been established key negative regulators responses; within last decade, increasing evidence suggests they are also core components temperature signalling, multiple mechanisms which regulates activity these transcription discovered. It has become clear responses cannot be considered in isolation, but occur context of, influenced by, other signals. This review discusses recent advances understanding through affects PIF function how environment.
Язык: Английский
Процитировано
47