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

Antioxidants, Год журнала: 2025, Номер 14(1), С. 74 - 74

Опубликована: Янв. 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.

Язык: Английский

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CsHY5 Regulates Light-Induced Anthocyanin Accumulation in Camellia sinensis

International Journal of Molecular Sciences, Год журнала: 2025, Номер 26(7), С. 3253 - 3253

Опубликована: Апрель 1, 2025

Tea is one of the world's major non-alcoholic beverages, popular for its health benefits and flavor. Purple-bud tea particularly rich in anthocyanins, concentration which varies depending on cultivar cultivation conditions. While genetic regulation anthocyanin accumulation well understood, impact environmental factors, such as light, synthesis less documented. In this study, we analyzed content expression levels biosynthesis genes (ABGs), CsAN1, CsHY5, under different light intensities durations. The both CsAN1 ABGs was significantly induced by with an intensity 8000 lx effective promoting accumulation. Furthermore, explored effect shading content, finding that fifty percent reduced nearly half. Finally, dual-luciferase reporter assays yeast one-hybrid confirmed direct CsHY5 CsAN1. These findings offer insights into regulatory mechanisms underlying light-induced plants suggest a potential method controlling production.

Язык: Английский

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CIPK11 phosphorylates GSTU23 to promote cold tolerance in Camellia sinensis

Plant Cell & Environment, Год журнала: 2024, Номер 47(12), С. 4786 - 4799

Опубликована: Авг. 1, 2024

Cold stress negatively impacts the growth, development, and quality of Camellia sinensis (Cs, tea) plants. CBL-interacting protein kinases (CIPK) comprise a pivotal family involved in plant development response to multiple environmental stimuli. However, their roles regulatory mechanisms tea plants (Camellia (L.) O. Kuntze) remain unknown. Here we show that CsCBL-interacting kinase 11 (CsCIPK11), whose transcript abundance was significantly induced at low temperatures, interacts phosphorylates tau class glutathione S-transferase 23 (CsGSTU23). CsGSTU23 also cold-inducible gene has higher cold-resistant accessions than cold-susceptible accessions. CsCIPK11 phosphorylated Ser37, enhancing its stability enzymatic activity. Overexpression Arabidopsis thaliana resulted enhanced cold tolerance under freezing conditions, while transient knockdown expression had opposite effect, resulting decreased suppression C-repeat-binding transcription factor (CBF) transcriptional pathway stress. Furthermore, overexpression increased tolerance. These findings demonstrate plays central role signaling signals modulates antioxidant capacity by phosphorylating CsGSTU23, leading improved

Язык: 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, Год журнала: 2024, Номер 14, С. 100705 - 100705

Опубликована: Дек. 1, 2024

Язык: Английский

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CsMYB308 as a repressive transcription factor inhibits anthocyanin biosynthesis in tea plants

Plant Physiology and Biochemistry, Год журнала: 2025, Номер 222, С. 109662 - 109662

Опубликована: Фев. 21, 2025

Язык: Английский

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A comprehensive review on the promising purple leaf tea

Comprehensive Reviews in Food Science and Food Safety, Год журнала: 2025, Номер 24(2)

Опубликована: Март 1, 2025

Purple leaf tea products (PTPs) are processed from purple leaves (PTLs) and combine unique color, flavors, superior health benefits, holding promising market potential. However, PTLs contain chemical compositions, the lack of systematic generalization PTPs processing techniques has led to under-representation their qualities. Compared traditional green products, knowledge about is extremely limited lacks a framework linking composition, techniques, which largely exploitation PTPs. This review summarizes composition PTLs, highlights variations across effects on flavor qualities It also explores potential benefits examines challenges incorporating into food industry, offering insights applications. The characterized by its polyphenolic profile, rich in anthocyanins, catechins, O-methyl aroma components such as α/β-ionone linalool. requires suitable methods maximize health-promoting effects. offer notable including antioxidant, anti-inflammatory, anticancer, neuroprotective, anti-obesity effects, primarily due components. Additionally, show great natural colorants applications dietary supplements tea-flavored beverages. Based these overviews, key possible future research directions outlined, especially advancing production systematically evaluating expanding

Язык: Английский

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Metabolome profiling unveil the composition differences of quality of different tea cultivars

Beverage Plant Research, Год журнала: 2024, Номер 4(1), С. 0 - 0

Опубликована: Янв. 1, 2024

Tea plant is abundant in bioactive compounds, including flavonoids, amino acids, alkaloids, terpenoid and lipids, those are main affecting tea quality flavors. Despite there many studies of metabolites about different cultivars, the composition differences their biosynthesis regulation remains still unknow. In this study, 505 were detected from apical bud 1^st leaf ('Shuchazao': 'SCZ', 'Huangkui': 'HK' 'Zijuan': 'ZJ' for short) using widely-targeted metabolomics, 192 45 59 acids derivatives, 28 phenolamides. Metabolite analysis showed that flavonols anthocyanins mainly distributed form glycosides three wherein its accumulated 'ZJ', indicating a correlation with color attributes. EGCG emerged as most flavan-3-ols compound among cultivars. while L-theanine represented predominant free acid, concentrated compared to leaf, likewise, lipids similar accumulating buds These findings offer valuable insights into genetic metabolite diversity, augmenting our understanding specific plants.

Язык: Английский

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Association analysis of BSA-seq, BSR-seq, and RNA-seq reveals key genes involved in purple leaf formation in a tea population (Camellia sinensis)

Horticulture Research, Год журнала: 2024, Номер 11(9)

Опубликована: Июль 10, 2024

Abstract Purple tea, rich in anthocyanins, has a variety of health benefits and is attracting global interest. However, the regulation mechanism anthocyanin purple tea populations not been extensively studied. In this experiment, RNA-seq, BSA-seq, BSR-seq were performed using 30 individuals with extreme colors (dark-purple green) an F1 population ‘Zijuan’ ‘Jinxuan’. The results show that 459 genes differentially expressed green leaves, among which involved synthesis transport pathway, such as CHS, F3H, ANS, MYB75, GST, MATE, ABCC, highly leaves. Moreover, there multiple SNP/InDel variation sites on chromosomes 2 14 plant, identified by BSA-seq. integrated analysis two (CsANS CsMYB75) site variations plants. By silencing we proved CsMYB75 could positively regulate accumulation expression related structural A 181-bp InDel promoter was also found to be co-segregating leaf color. study provide theoretical reference for molecular plants contribute creation new cultivars high content.

Язык: Английский

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Pruned tea biomass plays a significant role in functional food production: A review on characterization and comprehensive utilization of abandon‐plucked fresh tea leaves

Comprehensive Reviews in Food Science and Food Safety, Год журнала: 2024, Номер 23(4)

Опубликована: Июль 1, 2024

Abstract Tea is the second largest nonalcoholic beverage in world due to its characteristic flavor and well‐known functional properties vitro vivo. Global tea production reaches 6.397 million tons 2022 continues rise. Fresh leaves are mainly harvested spring, whereas thousands of discarded summer autumn. Herein, pruned biomass refers abandon‐plucked being non‐plucking period, especially At present, no relevant concluding remarks have been made on this undervalued biomass. This review summarizes seasonal differences intrinsic metabolites pays special attention most critical bioactive compounds, including polyphenols, theanine, caffeine. Additionally, meaningful profound methods transform fresh into high‐value products reviewed. In autumn, plants accumulate much more phenols than epigallocatechin gallate (galloyl catechin), anthocyanins (catechin derivatives), proanthocyanidins (polymerized catechins). Vigorous carbon metabolism induced by high light intensity temperature autumn also accumulates carbohydrates, such as soluble sugars cellulose. The characteristics make them not ideal raw materials for tea, but suitable novel like beverages food ingredients using traditional or hybrid technologies enzymatic transformation, microbial fermentation, formula screening, extraction, with abundant polyphenols serving prominent contributors.

Язык: Английский

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Differential Response of MYB Transcription Factor Gene Transcripts to Circadian Rhythm in Tea Plants (Camellia sinensis)

International Journal of Molecular Sciences, Год журнала: 2024, Номер 25(1), С. 657 - 657

Опубликована: Янв. 4, 2024

The circadian clock refers to the formation of a certain rule in long-term evolution an organism, which is invisible ‘clock’ body organism. As one largest TF families higher plants, MYB transcription factor involved plant growth and development. also inextricably correlated with rhythm. In this study, transcriptome data tea ‘Baiyeyihao’ were measured at photoperiod interval 4 h (24 h). A total 25,306 unigenes obtained, including 14,615 that annotated across 20 functional categories within GO classification. Additionally, 10,443 single-gene clusters 11 sublevels metabolic pathways using KEGG. Based on results gene annotation differential transcript analysis, 22 genes encoding factors identified. G10 group phylogenetic tree had 13 members, 5 related rhythm, accounting for 39%. G1, G2, G8, G9, G15, G16, G18, G19, G20, G21 G23 groups no members associated Among differentially expressed factors, 3 LHY, RVE1 RVE8 core rhythm belonging G10, G12 groups, respectively. Real-time fluorescence quantitative PCR was used detect validate expression transcripts

Язык: Английский

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