The Role of Polyphenols in Abiotic Stress Tolerance and Their Antioxidant Properties to Scavenge Reactive Oxygen Species and Free Radicals

Antioxidants, Journal Year: 2025, Volume and Issue: 14(1), P. 74 - 74

Published: Jan. 10, 2025

Plants have evolved complex mechanisms to cope with diverse abiotic stresses, the phenylpropanoid pathway playing a central role in stress adaptation. This produces an array of secondary metabolites, particularly polyphenols, which serve multiple functions plant growth, development, regulating cellular processes, and responses. Recent advances understanding molecular underlying metabolism revealed regulatory networks involving MYB transcription factors as master regulators their interactions signaling pathways. review summarizes our current polyphenol-mediated adaptations plants, emphasizing regulation function key compounds. We discussed how various including heat chilling stress, drought, salinity, light UV radiation, nanoparticles chemical heavy metal toxicity, modulate trigger accumulation specific polyphenolic The antioxidant properties these phenolic acids, flavonoids, anthocyanins, lignin, roles reactive oxygen species scavenging, neutralizing free radicals, membrane stabilization, osmotic adjustment are discussed. Understanding metabolic responses is crucial for developing stress-resilient crops improving agricultural productivity under increasingly challenging environmental conditions. provides comprehensive insights into integrating adaptation mechanisms, highlighting potential targets enhancing crop tolerance through adjustment.

Language: Английский

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Transcriptomic and Metabolomic Insights into Temperature-Dependent Changes in Catechin and Anthocyanin Accumulation in Tea Plants with Different Leaf Colors

Plant Stress, Journal Year: 2024, Volume and Issue: 14, P. 100705 - 100705

Published: Dec. 1, 2024

Language: Английский

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Heat‐responsive MaHSF11 transcriptional activator positively regulates flavonol biosynthesis and flavonoid B‐ring hydroxylation in banana (Musa acuminata)

The Plant Journal, Journal Year: 2025, Volume and Issue: 121(5)

Published: March 1, 2025

Plant flavonols act primarily as ultraviolet radiation absorbers, reactive oxygen species scavengers, and phytoalexins, they contribute to biotic abiotic stress tolerance in plants. Banana (Musa acuminata), an herbaceous monocot important fruit crop, accumulates flavonol derivatives different organs, including the edible pulp. Although content varies greatly molecular mechanisms involving transcriptional regulation of synthesis banana are not known. Here, we characterized three SG7-R2R3 MYB transcription factors (MaMYBFA1, MaMYBFA2, MaMYBFA3) heat shock factor (MaHSF11), elucidate mechanism involved biosynthesis banana. MaMYBFA positively regulates synthase 2 (MaFLS2) downregulates MaFLS1. We show these be weak regulators synthesis. Overexpression MaHSF11 enhances contents, particularly that myricetin, promotes B-ring hydroxylation, which contributes diversity derivatives. directly interacts with MaFLS1 flavonoid 3',5'-hydroxylase1 (MaF3'5'H1) promoters, both vitro vivo. activates expression MaDREB1 directly, is known promote cold chilling fruit. Overall, our study elucidates a regulatory for suggests possible targets genetic optimization enhance nutritional value responses this globally crop.

Language: Английский

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Selection and Validation of Reference Genes in Clinacanthus nutans Under Abiotic Stresses, MeJA Treatment, and in Different Tissues

International Journal of Molecular Sciences, Journal Year: 2025, Volume and Issue: 26(6), P. 2483 - 2483

Published: March 11, 2025

Clinacanthus nutans is a valuable traditional medicinal plant that contains enriched active compounds such as triterpenoids and flavonoids. Understanding the accuulation process of these secondary metabolites in C. requires exploring gene expression regulation under abiotic stresses hormonal stimuli. qRT-PCR powerful method for analysis, with selection suitable reference genes being paramount. However, reports on stably expressed even across entire family Acanthaceae are limited. In this study, we evaluated stability 12 candidate (CnUBQ, CnRPL, CnRPS, CnPTB1, CnTIP41, CnACT, CnUBC, CnGAPDH, Cn18S, CnCYP, CnEF1α, CnTUB) different tissues MeJA treatment using three programs (geNorm, NormFinder, BestKeeper). The integrated ranking results indicated CnCYP were most tissues. Under stress conditions, CnEF1α stable, while treatment, CnGAPDH exhibited highest stability. Additionally, stable all tested samples, whereas was least stable. consistently among top genes, may therefore serve an ideal analysis nutans. To further validate selected assessed two key biosynthetic CnPAL CnHMGR. confirmed yielded patterns consistent biological expectations, unstable led to significant deviations. These findings offer insights accurately quantifying target via nutans, facilitating investigations into mechanisms underlying compound accumulation.

Language: Английский

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Transcriptomic Profiling of Heat-Treated Oriental Lily Reveals LhERF109 as a Positive Regulator of Anthocyanin Accumulation

Agronomy, Journal Year: 2025, Volume and Issue: 15(5), P. 1071 - 1071

Published: April 28, 2025

Pink-flowered Oriental lily cultivars exhibit significant color fading under high temperatures, but the underlying regulatory mechanisms remain unclear. We subjected ‘Souvenir’ plants to temperature treatments (20 °C and 35 °C) performed transcriptome sequencing weighted gene co-expression network analysis (WGCNA). The (35 significantly reduced anthocyanin content in tepals. identified 8354 differentially expressed genes, with GO KEGG analyses revealing a dynamic transition from early stress responses metabolic adaptation. WGCNA revealed module strongly correlated content, which we constructed using known anthocyanin-related including key transcription factor LhMYB12 structural genes involved biosynthetic pathway (LhANS, LhDFR, LhUGT78, LhF3′H). Through this comprehensive analysis, successfully screened LhERF109 as promising candidate. transient overexpression of was found enhance accumulation upregulate LhMYB12, while silencing expression produced opposite effects. These findings identify positive regulator biosynthesis providing new targets for breeding heat-tolerant lilies stable flower coloration.

Language: Английский

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Analysis of Transcriptional and Metabolic Differences in the Petal Color Change Response to High-Temperature Stress in Various Chrysanthemum Genotypes

Agronomy, Journal Year: 2024, Volume and Issue: 14(12), P. 2863 - 2863

Published: Nov. 30, 2024

Flower color is one of the most important ornamental traits chrysanthemums. Previous studies have shown that high temperatures can cause petals some chrysanthemum varieties to fade; however, molecular mechanisms behind this phenomenon remain poorly understood. This study examines change in purple chrysanthemums under high-temperature stress using combined metabolomic and transcriptomic analyses. Four varieties—two heat-stable (‘Zi Feng Che’ ‘Chrystal Regal’) two heat-sensitive Hong Tuo Gui’ ‘Zi Lian’)—were analyzed. High-temperature conditions (35 °C) significantly downregulated key anthocyanins varieties, particularly cyanidin-3-O-(3″,6″-O-dimalonyl)glucoside pelargonidin-3-O-(3″,6″-O-dimalonyl)glucoside. Transcriptome analysis revealed differential gene expression involved anthocyanin biosynthesis degradation, with significant enrichment MAPK signaling, phenylpropanoid biosynthesis, flavonoid pathways. The highlighted CHS, DFR, ANS, GT1, 3AT, UGT75C1 genes synthesis between heat-tolerant varieties. Compared exhibited greater heat-responsive transcription factors, including HSFs, ERFs, MYBs, WRKYs. Genes show a negative correlation anthocyanins, Cse_sc012959.1_g030.1 (βG), Cse_sc001798.1_g020.1 (MYB), Cse_sc006944.1_g010.1 Cse_sc000572.1_g090.1 (HSF), might regulate accumulation response stress. These results provide guidance for cultivation management variety selection conditions. Additionally, they lay foundation elucidating flower stability heat breeding new

Language: Английский

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Understanding climate change response of plant–insect herbivore interactions from ecological traits

Biological Journal of the Linnean Society, Journal Year: 2024, Volume and Issue: 144(1)

Published: Dec. 1, 2024

Abstract The interactions between plants and insect herbivores play crucial roles in ecosystem functions services. Ongoing climate change can affect these through different mechanisms either directly or indirectly. In this review, we outline key ecological traits which organisms respond to change. These include morphology, physiology, chemistry for plants, behaviour insects. We highlight how the responses of those a changing might consequently herbivory. propose questions that need be addressed each perspective plant traits, suggest novel approaches answering questions. Looking forwards, fruitful areas exploration underlying plant–insect herbivore changes from trait-based approaches.

Language: Английский

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