Role of plant secondary metabolites in defence and transcriptional regulation in response to biotic stress

Plant Stress, Journal Year: 2023, Volume and Issue: 8, P. 100154 - 100154

Published: April 3, 2023

Secondary metabolites in plants have been recognized as a novel basis of potential bio-pesticides, paving the way for their use sustainable agriculture. Plant secondary pivotal roles plant-pathogen interactions. Some important are terpenoids, flavanols, flavones, etc., stress-inducible phytochemicals playing an role plant immune response development. Pathogen enters into host cell, multiply and utilise biological mechanism plants, causing hazard to world food assembly. Under stressed circumstances, evolve powerful intricate system growth defensive action. On other hand, transcription factors (TFs) assist counter adverse environments by acting mediators stress signal regulating stress-responsive gene expression. The transcriptional post-transcriptional manipulation is capable aid molecular breeding genetic modification meant improved metabolite synthesis. Although presence numerous has established life, very slight known about interaction with pathogens specific mechanisms involved leading immunity. Chemical pesticides wreaking havoc on our environment. As consequence, environmental-friendly alternatives disease management, like plant-based metabolites, should be explored. In this appraisal, we reviewed relation pathogens, contribution innate immunity, action, regulation TFs combating infections eco-friendly approach.

Language: Английский

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The MYB transcription factor RcMYB1 plays a central role in rose anthocyanin biosynthesis

Horticulture Research, Journal Year: 2023, Volume and Issue: 10(6)

Published: April 21, 2023

Rose (Rosa hybrida) is one of most famous ornamental plants in the world, and its commodity value largely depends on flower color. However, regulatory mechanism underlying rose color still unclear. In this study, we found that a key R2R3-MYB transcription factor, RcMYB1, plays central role anthocyanin biosynthesis. Overexpression RcMYB1 significantly promoted accumulation both white petals tobacco leaves. 35S:RcMYB1 transgenic lines, significant anthocyanins occurred leaves petioles. We further identified two MBW complexes (RcMYB1-RcBHLH42-RcTTG1; RcMYB1-RcEGL1-RcTTG1) associated with accumulation. Yeast one-hybrid luciferase assays showed could active own gene promoter those other EBGs (early biosynthesis genes) LBGs (late genes). addition, enhanced transcriptional activity LBGs. Interestingly, our results also indicate involved metabolic regulation carotenoids volatile aroma. summary, widely participates ABGs (anthocyanin genes), indicative rose. Our provide theoretical basis for improvement trait by breeding or genetic modification.

Language: Английский

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Advances in the study of the function and mechanism of the action of flavonoids in plants under environmental stresses

Planta, Journal Year: 2023, Volume and Issue: 257(6)

Published: May 3, 2023

Language: Английский

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Accumulation characteristics of plant flavonoids and effects of cultivation measures on their biosynthesis: A review

Plant Physiology and Biochemistry, Journal Year: 2024, Volume and Issue: 215, P. 108960 - 108960

Published: July 23, 2024

Language: Английский

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A comprehensive review of transcription factor-mediated regulation of secondary metabolites in plants under environmental stress

Stress Biology, Journal Year: 2025, Volume and Issue: 5(1)

Published: Feb. 24, 2025

Abstract Plants encounter a wide range of biotic and abiotic environmental stresses throughout their lifespan. To adapt survive, they have evolved complex defense mechanisms that involve the production secondary metabolites (SMs), which play critical roles in enhancing plant resilience. These bioactive compounds function as deterrents to herbivores, barriers against pathogens, protectants oxidative stress. regulate synthesis accumulation (SMs) response various factors such drought, salinity, cold, heat, heavy metals, UV-B radiation. stress conditions can significantly alter SM levels part plant's adaptive response. Transcription (TFs) are essential mediators this process, regulating gene expression involved biosynthesis. By interacting with signaling pathways, TFs fine-tune mechanisms, ensuring timely specific SMs mitigate impacts. This review provides comprehensive examination influence on plants under both conditions. Additionally, we thoroughly discuss key TFs—including AP2/ERF, WRKY, bHLH, bZIP, MYB, NAC—in biosynthesis, highlighting contributions ability withstand

Language: Английский

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Functional Diversification and Mechanistic Insights of MYB Transcription Factors in Mediating Plant Growth and Development, Secondary Metabolism, and Stress Responses

Journal of Plant Growth Regulation, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 27, 2025

Language: Английский

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Divergent MYB paralogs determine spatial distribution of linalool mediated by JA and DNA demethylation participating in aroma formation and cold tolerance of tea plants

Plant Biotechnology Journal, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 11, 2025

Summary Linalool not only is one of characteristic flavour volatiles tea, contributing to floral aroma, but also a kind defensive compounds, playing essential roles in resistance against biotic/abiotic stresses. Although the linalool synthases have been identified, much unknown about regulation mechanism tea plants. We identified two pairs MYB paralogs as biosynthesis activators, which pair (CsMYB148/CsMYB193) specifically expressed flowers, and another (CsMYB68/CsMYB147) highly leaves, fruits roots. These activators interacted with CsMYC2 form MYC2‐MYB complexes regulate synthase . While Jasmonate ZIM‐domain (JAZ) proteins served repressors by interfering complex. Further, we found that transcripts CsMYB68 / CsMYB147 were significantly upregulated jasmonic acid (JA) improve products during processing pathway may downstream pathways JA signalling DNA methylation processes participate cold resistance. Under stress, was activated elevate abundance MYC‐MYB complexes; meanwhile, demethylation activated, leading declining levels increasing Our study provides new insight into synergistically improving quality plant

Language: Английский

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Single‐cell transcriptome atlas reveals developmental trajectories and a novel metabolic pathway of catechin esters in tea leaves

Plant Biotechnology Journal, Journal Year: 2022, Volume and Issue: 20(11), P. 2089 - 2106

Published: July 10, 2022

The tea plant is an economically important woody beverage crop. unique taste of evoked by certain metabolites, especially catechin esters, whereas their precise formation mechanism in different cell types remains unclear. Here, a fast protoplast isolation method was established and the transcriptional profiles 16 977 single cells from 1st 3rd leaves were investigated. We first identified 79 marker genes based on six isolated tissues constructed transcriptome atlas, mapped developmental trajectories further delineated distribution during leaf differentiation associated with fate transformation. Interestingly, eight differently expressed found to co-exist at four branch points. Genes involved biosynthesis metabolites showed cell- development-specific characteristics. An unexpected ester glycosyltransferase characterized for time plants gene co-expression network mesophyll cells. Thus, single-cell landscape crop leave reported novel metabolism pathway esters discovered.

Language: Английский

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Combined analysis of transcriptome and metabolome provides insights into nano-selenium foliar applications to improve summer tea quality (Camellia sinensis)

LWT, Journal Year: 2023, Volume and Issue: 175, P. 114496 - 114496

Published: Jan. 20, 2023

Summer tea quality deteriorates with its inferior taste features. Exogenous nano-selenium (Se) supplementation is an effective device to improve crop and economic value; however, the effects of nano-Se on summer remain unclear. This study aimed illustrate foliar application leaf by integrating metabolomics transcriptomics approaches. Nano-Se enhanced Se content in leaves. Further, significantly decreased total polyphenols, catechin, caffeine contents but increased amino acids theanine contents, markedly lowering ratio polyphenols/amino as well. Sensory evaluation indicated that reduced bitterness astringency improved umami sweet tastes infusion. A 130 compounds were identified metabolome. Levels most phenolic after treatment. Association analysis depicted a 30 differentially expressed genes (DEGs) related catechin (18), (7), (5) biosynthetic pathways influenced nano-Se. Several transcription factors interact these DEGs. Our findings indicate can quality, provide new insight into plants.

Language: Английский

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Biosynthesis and the Transcriptional Regulation of Terpenoids in Tea Plants (Camellia sinensis)

International Journal of Molecular Sciences, Journal Year: 2023, Volume and Issue: 24(8), P. 6937 - 6937

Published: April 8, 2023

Terpenes, especially volatile terpenes, are important components of tea aroma due to their unique scents. They also widely used in the cosmetic and medical industries. In addition, terpene emission can be induced by herbivory, wounding, light, low temperature, other stress conditions, leading plant defense responses plant–plant interactions. The transcriptional levels core genes (including HMGR, DXS, TPS) involved terpenoid biosynthesis up- or downregulated MYB, MYC, NAC, ERF, WRKY, bHLH transcription factors. These regulators bind corresponding cis-elements promoter regions genes, some them interact with factors form a complex. Recently, several key synthesis have been isolated functionally identified from plants. this work, we focus on research progress regulation terpenes plants (Camellia sinensis) thoroughly detail compounds, biosynthesis-related biosynthesis, importance. Furthermore, review potential strategies studying specific functions candidate that discriminated date.

Language: Английский

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