Plant Development and Crop Yield: The Role of Gibberellins

Plants, Journal Year: 2022, Volume and Issue: 11(19), P. 2650 - 2650

Published: Oct. 9, 2022

Gibberellins have been classically related to a few key developmental processes, thus being essential for the accurate unfolding of plant genetic programs. After more than century research, over one hundred different gibberellins described. There is continuously increasing interest in research because their relevant role so-called "Green Revolution", as well current and possible applications crop improvement. The functions attributed traditionally restricted regulation stature, seed germination, flowering. Nonetheless, last years has shown that these extend many other processes. In this review, knowledge on homeostasis mode action briefly outlined, while specific attention focused responses which take part. Thus, those genes proteins identified involved gibberellin model non-model species are highlighted. present review aims provide comprehensive picture state-of-the-art perception molecular biology its effects development. This might be helpful enhance our understanding know-how development breeding

Language: Английский

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What is going on with the hormonal control of flowering in plants?

The Plant Journal, Journal Year: 2020, Volume and Issue: 105(2), P. 431 - 445

Published: Oct. 28, 2020

Summary Molecular genetic studies using Arabidopsis thaliana as a model system have overwhelmingly revealed many important molecular mechanisms underlying the control of various biological events, including floral induction in plants. The major pathways flowering been characterized in‐depth, and include photoperiod, vernalization, autonomous gibberellin pathways. In recent years, novel are increasingly being identified. These age, thermosensory, sugar, stress hormonal signals to transition. Among them, except pathway is not formally considered per se , due relatively weak often pleiotropic effects, complex phenotypic variations, some controversial ones. However, number suggested that may be mediated by regulation flowering. view diversity plant kingdoms, this review begins with an assessment photoperiodic flowering, A. thaliana, but rice ( Oryza sativa ); staple crop for human consumption worldwide, short‐day plants, cereals breeding crops. then compared A . This aims update our knowledge on integrate it into entire gene network.

Language: Английский

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Tomato sucrose transporter SlSUT4 participates in flowering regulation by modulating gibberellin biosynthesis

PLANT PHYSIOLOGY, Journal Year: 2023, Volume and Issue: 192(2), P. 1080 - 1098

Published: March 16, 2023

Abstract The functions of sucrose transporters (SUTs) differ among family members. physiological function SUT1 has been studied intensively, while that SUT4 in various plant species including tomato (Solanum lycopersicum) is less well-understood. In this study, we characterized the SlSUT4 regulation flowering using a combination molecular and analyses. displayed transport activity for when expressed yeast (Saccharomyces cerevisiae), it localized at both plasma membrane tonoplast. interacted with SlSUT1, causing partial internalization latter, main phloem loader tomato. Silencing promoted SlSUT1 localization to membrane, contributing increased export thus level shoot apex, which flowering. Both silencing spraying suppressed gibberellin biosynthesis through repression ent-kaurene oxidase 20-oxidase-1 (2 genes encoding key enzymes biosynthesis) expression by SlMYB76, directly bound their promoters. SlMYB76 biosynthesis. Our results suggest functional SUT tomato; downregulation enhances promotes inhibiting

Language: Английский

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The mechanism of low blue light-induced leaf senescence mediated by GmCRY1s in soybean

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Jan. 27, 2024

Abstract Leaf senescence is a crucial trait that has significant impact on crop quality and yield. Previous studies have demonstrated light key factor in modulating the process. However, precise mechanism by which plants sense control remains largely unknown, particularly species. In this study, we reveal reduction blue under shading conditions can efficiently induce leaf soybean. The receptors GmCRY1s rather than GmCRY2s, primarily regulate response to signals. Our results show interact with DELLA proteins light-activated conditions, stabilizing them consequently suppressing transcription of GmWRKY100 delay senescence. Conversely, LBL reduces interaction between proteins, leading their degradation premature leaves. findings suggest GmCRY1s-GmDELLAs-GmWRKY100 regulatory cascade involved mediating LBL-induced soybean, providing insight into how signals Additionally, generate knockout soybeans delayed improved yield natural field indicating potential applications enhancing soybean production manipulating trait.

Language: Английский

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GIGANTEA Shapes the Photoperiodic Rhythms of Thermomorphogenic Growth in Arabidopsis

Molecular Plant, Journal Year: 2020, Volume and Issue: 13(3), P. 459 - 470

Published: Jan. 16, 2020

Language: Английский

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FKF1 F‐box protein promotes flowering in part by negatively regulating DELLA protein stability under long‐day photoperiod inArabidopsis

Journal of Integrative Plant Biology, Journal Year: 2020, Volume and Issue: 62(11), P. 1717 - 1740

Published: May 19, 2020

Abstract FLAVIN‐BINDING KELCH REPEAT F‐BOX 1 ( FKF1 ) encodes an F‐box protein that regulates photoperiod flowering in Arabidopsis under long‐day conditions (LDs). Gibberellin (GA) is also important for regulating LDs. However, how and the GA pathway work concert not fully understood. Here, we showed mutation of could cause accumulation DELLA proteins, which are crucial repressors signaling pathway, thereby reducing plant sensitivity to flowering. Both vitro vivo biochemical analyses demonstrated directly interacted with proteins. Furthermore, promoted ubiquitination degradation Analysis genetic data revealed acted partially through DELLAs regulate In addition, exerted a negative feedback on expression. Collectively, these findings demonstrate promotes by negatively stability LDs, suggesting potential mechanism linking

Language: Английский

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CONSTANS interacts with and antagonizes ABF transcription factors during salt stress under long-day conditions

PLANT PHYSIOLOGY, Journal Year: 2023, Volume and Issue: 193(2), P. 1675 - 1694

Published: June 28, 2023

CONSTANS (CO) is a critical regulator of flowering that combines photoperiodic and circadian signals in Arabidopsis (Arabidopsis thaliana). CO expressed multiple tissues, including seedling roots young leaves. However, the roles underlying mechanisms modulating physiological processes outside remain obscure. Here, we show expression responds to salinity treatment. negatively mediated tolerance under long-day (LD) conditions. Seedlings from co-mutants were more tolerant stress, whereas overexpression resulted plants with reduced stress. Further genetic analyses revealed negative involvement GIGANTEA (GI) requires functional CO. Mechanistic analysis demonstrated physically interacts 4 basic leucine zipper (bZIP) transcription factors; ABSCISIC ACID-RESPONSIVE ELEMENT BINDING FACTOR1 (ABF1), ABF2, ABF3, ABF4. Disrupting these ABFs made hypersensitive demonstrating enhance tolerance. Moreover, ABF mutations largely rescued salinity-tolerant phenotype co-mutants. suppresses several salinity-responsive genes influences transcriptional regulation function ABF3. Collectively, our results LD-induced works antagonistically modulate responses, thus revealing how regulates plant adaptation

Language: Английский

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The Roles of Circadian Clock Genes in Plant Temperature Stress Responses

International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 25(2), P. 918 - 918

Published: Jan. 11, 2024

Plants monitor day length and memorize changes in temperature signals throughout the day, creating circadian rhythms that support timely control of physiological metabolic processes. The

Language: Английский

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Evolution of DELLA function and signaling in land plants

Evolution & Development, Journal Year: 2021, Volume and Issue: 23(3), P. 137 - 154

Published: Jan. 11, 2021

DELLA proteins are master growth regulators that repress responses to a group of plant hormones called gibberellins (GAs). Manipulation function and signaling was instrumental in the development high-yielding crop varieties saved millions from starvation during "Green Revolution." Despite decades extensive research, it is still unclear how mechanisms evolved within land lineage. Here, we review current knowledge on protein with reference structure, posttranslational modifications, downstream transcriptional targets, protein-protein interactions. Furthermore, discuss older recent findings regarding evolution lineage, an emphasis bryophytes, identify future avenues research would enable us shed more light signaling. Unraveling have could engineer better crops attempt contribute mitigating effects global warming achieving food security.

Language: Английский

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Origin, evolution, and molecular function of DELLA proteins in plants

The Crop Journal, Journal Year: 2021, Volume and Issue: 10(2), P. 287 - 299

Published: July 15, 2021

Gibberellic acid (GA), a ubiquitous phytohormone, has various effects on regulators of plant growth and development. GAs promote by overcoming restraint mediated DELLA proteins (DELLAs). DELLAs, in the GRAS family plant-specific nuclear proteins, are transcriptional harboring unique N-terminal GA perception region for binding receptor GIBBERELLIN INSENSITIVE DWARF1 (GID1) C-terminal domain necessary repression activity via interaction with multiple regulatory proteins. The conserved DELLAs evolved to form mode GID1/DELLA-mediated signaling originating bryophytes ferns. Binding GID1 increases affinity between SCF E3 ubiquitin–ligase complex, thus promoting eventual destruction 26S proteasome. negatively regulate response releasing transcription factors directly activate downstream genes indirectly biosynthesis increasing responsiveness feedback control transcription. communicates extensively other hormones uses crosstalk In this review, we summarize current understanding evolutionary DELLA-mediated gibberellin functional diversification DELLA, focusing primarily interactions diverse phytohormones.

Language: Английский

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