A review of the interaction mechanisms between jasmonic acid (JA) and various plant hormones, as well as the core regulatory role of MYC2

Plant Science, Journal Year: 2025, Volume and Issue: unknown, P. 112407 - 112407

Published: Jan. 1, 2025

Language: Английский

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Jasmonic acid improves barley photosynthetic efficiency through a possible regulatory module, MYC2-RcaA, under combined drought and salinity stress

Photosynthesis Research, Journal Year: 2024, Volume and Issue: 159(1), P. 69 - 78

Published: Jan. 1, 2024

Language: Английский

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Elucidating the modulatory effect of melatonin on enzyme activity and oxidative stress in wheat: a global meta‐analysis

Physiologia Plantarum, Journal Year: 2024, Volume and Issue: 176(2)

Published: March 1, 2024

Abstract In our comprehensive meta‐analysis, we initially collected 177 publications focusing on the impact of melatonin wheat. After meticulous screening, 40 published studies were selected, encompassing 558 observations for antioxidant enzymes, 312 reactive oxygen species (ROS), and 92 soluble biomolecules (soluble sugar protein). This analysis revealed significant heterogeneity across (I 2 > 99% ROS, biomolecules) notable publication bias, indicating complexity variability in research field. Melatonin application generally increased enzyme activities [superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), ascorbate (APX)] wheat, particularly under stress conditions, such as high temperature heavy‐metal exposure. Compared to control, SOD, POD, CAT, APX by 29.5, 16.96, 35.98, 171.64%, respectively. Moreover, oxidative markers like hydrogen peroxide (H O ), superoxide anion (O malondialdehyde (MDA) decreased with 23.73, 13.64, 21.91%, respectively, suggesting a reduction stress. The also highlighted melatonin's role improving carbohydrate metabolism defenses. showed an overall increase 12.77% content, 22.76% glutathione (GPX) activity compared control. However, effects varied different wheat varieties, environmental methods. Our study uncovered complex relationships between H levels, nuanced regulatory responses. meta‐analysis demonstrates increasing resilience abiotic stressors, potentially through its defense systems response.

Language: Английский

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Genome-wide identification of ZmMYC2 binding sites and target genes in maize

BMC Genomics, Journal Year: 2024, Volume and Issue: 25(1)

Published: April 23, 2024

Abstract Background Jasmonate (JA) is the important phytohormone to regulate plant growth and adaption stress signals. MYC2, an bHLH transcription factor, master regulator of JA signaling. Although MYC2 in maize has been identified, its function remains be clarified. Results To understand regulatory mechanism maize, joint analysis DAP-seq RNA-seq conducted identify binding sites target genes ZmMYC2. A total 3183 are detected both data, potentially as directly regulating These involved various biological processes including response. Besides classic cis -elements like G-box E-box that bound by some new motifs also revealed recognized ZmMYC2, such nGCATGCAnn, AAAAAAAA, CACGTGCGTGCG. The many ZmMYC2 identified IGV-sRNA. Conclusions All together, abundant characterized with their sites, providing basis construct network better understanding for signaling maize.

Language: Английский

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The CGA1-SNAT regulatory module potentially contributes to cytokinin-mediated melatonin biosynthesis and drought tolerance in wheat

BMC Plant Biology, Journal Year: 2025, Volume and Issue: 25(1)

Published: March 7, 2025

Melatonin plays a pivotal role in alleviating abiotic stresses, yet its biosynthesis regulation crops, particularly wheat, remains unclear. This study explores regulatory components of melatonin under drought stress using bioinformatic, physiochemical, and molecular approaches contrasting wheat genotypes. Bioinformatic analysis identified SNAT, key gene, 88 transcription factors (TFs) from 26 families as potential regulators. The network for SNAT highlighted CYTOKININ-RESPONSIVE GATA FACTOR 1 (CGA1) significant TF. Under stress, genotypes exhibited distinct CGA1-SNAT module expression, cytokinin levels, photosynthetic activity, oxidative damage. Cytokinin treatments regulated the module, altering content, SPAD values, chloroplast numbers, drought-susceptible uncovers interaction with pathway regulating during stress. These findings enhance our understanding mechanisms underpinning tolerance offer promising targets genetic biochemical interventions to improve crop resilience.

Language: Английский

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The Role of MYC2 Transcription Factors in Plant Secondary Metabolism and Stress Response Mechanisms

Plants, Journal Year: 2025, Volume and Issue: 14(8), P. 1255 - 1255

Published: April 20, 2025

Jasmonates (JAs) are essential signaling molecules that orchestrate plant responses to abiotic and biotic stresses regulate growth developmental processes. MYC2, a core transcription factor in JA signaling, plays central role mediating these processes through transcriptional regulation. However, the broader regulatory functions of particularly secondary metabolism stress pathways, still not fully understood. This review broadens perspective by detailing mechanisms primary MYC2 factors. It specifically emphasizes their roles regulating biosynthesis metabolites such as alkaloids, terpenes, flavonoids, modulating environmental stresses. The further explores how interacts with other factors hormonal pathways fine-tune defense metabolite production. Finally, it discusses potential enhance metabolic productivity agriculture, considering both applications limitations managing synthesis.

Language: Английский

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The Roles of MYC2 Transcription Factor in JA-Signaling Pathway in Plants

Journal of Plant Biology, Journal Year: 2025, Volume and Issue: unknown

Published: April 30, 2025

Language: Английский

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Unveiling the role of the ERD15 gene in wheat's tolerance to combined drought and salinity stress: a meta‐analysis of QTL and RNA‐Seq data

Physiologia Plantarum, Journal Year: 2024, Volume and Issue: 176(5)

Published: Sept. 1, 2024

Abstract The coexistence of drought and salinity stresses in field conditions significantly hinders wheat ( Triticum aestivum L.) productivity. Understanding the molecular mechanisms governing response tolerance to these is crucial for developing resilient varieties. Our research, employing a combination meta‐QTL meta‐RNA‐Seq transcriptome analyses, has uncovered genome functional landscape salinity. We identified 118 meta‐QTLs (MQTLs) distributed across all 21 chromosomes, with ten designated as most promising. Additionally, we found 690 meta‐differentially expressed genes (mDEGs) shared between stress. Notably, our findings highlight Early Responsive Dehydration 15 ERD15 ) gene, located one promising MQTLs, key gene network , differentially contrasting genotypes under combined stress conditions, regulates water relations, photosynthetic activity, antioxidant ion homeostasis. These not only provide valuable insights into genetic underlying but also hold potential contribute development stress‐resilient

Language: Английский

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Exogenous melatonin improves drought stress tolerance via regulating tryptophan metabolism and flavonoid biosynthesis pathways in wheat

Physiologia Plantarum, Journal Year: 2024, Volume and Issue: 176(6)

Published: Nov. 1, 2024

Abstract Melatonin (MT) serves an indispensable function in plant development and their response to abiotic stress. Although numerous drought‐tolerance genes have been ascertained wheat, further investigation into the molecular pathways controlling drought stress tolerance remains necessary. In this investigation, it was observed that MT treatment markedly enhanced resistance wheat by diminishing malondialdehyde (MDA) levels augmenting activity of antioxidant enzymes POD, APX, CAT compared untreated control plants. Transcriptomic analysis disclosed melatonin activated tryptophan metabolism flavonoid biosynthesis pathways. Furthermore, quantitative reverse transcription PCR (qRT‐PCR) outcomes validated expression trends these differentially expressed aligned with transcriptomic data. Metabolomic profiling identified alterations abundance several metabolites, including tryptamine, MT, formylanthranilate, 3‐hydroxyanthranilate, 6‐hydroxymelatonin, naringenin chalcone, astragalin, pinbanksin, caffeoyl quinic acid. Co‐expression suggested various factors—encompassing AP2/ERF‐ERF, WRKY, bZIP, C2H2, bHLH, NAC, MYB—participated across multiple Ultimately, findings highlight exogenous application bolsters wheat's through modulation biosynthesis. These insights provide novel perspectives on frameworks mediating MT's effect pinpointing candidate for potential genetic enhancement programs wheat.

Language: Английский

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The SnRK2.2‐ZmHsf28‐JAZ14/17 module regulates drought tolerance in maize

New Phytologist, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 16, 2024

Abscisic acid (ABA) and jasmonic (JA) are important plant hormones in response to drought stress. We have identified that ZmHsf28 elevated ABA JA accumulation confer tolerance maize; however, the underlying mechanism still remains elusive. The knockout line zmhsf28 is generated confirm positive role of response. Multiple approaches combined reveal protein interaction among ZmHsf28, ZmSnRK2.2 ZmJAZ14/17, which form a regulatory module mediate maize through regulating key biosynthetic genes ZmNCED3 ZmLOX8. Upon stress, plants exhibit weaker than WT with slower stomatal closure more reactive oxygen species accumulation. interacted physically, resulting phosphorylation at Ser220, enhances binding heat shock elements ZmNECD3 ZmLOX8 promoters subsequent gene expression. Meanwhile, ZmMYC2 upregulates expression acting on G-box its promoter. Besides, ZmJAZ14/17 competitively interact interfere between ZmSnRK2.2, blocking impairing downstream regulation. ZmSnRK2.2-ZmHsf28-ZmJAZ14/17 regulate coordinating signaling, providing insights for breeding improve resistance maize.

Language: Английский

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