Melatonin, a phytohormone for enhancing the accumulation of high-value metabolites and stress tolerance in microalgae: Applications, mechanisms, and challenges

Bioresource Technology, Journal Year: 2023, Volume and Issue: 393, P. 130093 - 130093

Published: Nov. 23, 2023

Language: Английский

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Melatonin as a key regulator in seed germination under abiotic stress

Journal of Pineal Research, Journal Year: 2024, Volume and Issue: 76(1)

Published: Jan. 1, 2024

Abstract Seed germination (SG) is the first stage in a plant's life and has an immense importance sustaining crop production. Abiotic stresses reduce SG by increasing deterioration of seed quality, reducing potential, vigor. Thus, to achieve sustainable level yield, it important improve under abiotic stress conditions. Melatonin (MEL) biomolecule that interplays developmental processes regulates many adaptive responses plants, especially stresses. this review specifically summarizes discusses mechanistic basis MEL‐mediated MEL regulating some stress‐specific common responses. For instance, induced specific include regulation ionic homeostasis, hydrolysis storage proteins salinity stress, C‐repeat binding factors signaling cold starch metabolism high temperature heavy metal activation aquaporins accumulation osmolytes drought stress. On other hand, mediated gibberellins biosynthesis abscisic acid catabolism, redox Ca 2+ are amongst Nonetheless such as endogenous contents, plant species, growth conditions also influence above‐mentioned In conclusion, interacting with different physiological mechanisms.

Language: Английский

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Melatonin interaction with abscisic acid in the regulation of abiotic stress in Solanaceae family plants

Frontiers in Plant Science, Journal Year: 2023, Volume and Issue: 14

Published: Sept. 11, 2023

Solanaceous vegetable crops are cultivated and consumed worldwide. However, they often confront diverse abiotic stresses that significantly impair their growth, yield, overall quality. This review delves into melatonin abscisic acid (ABA) biosynthesis roles in stress responses. It closely examines the intricate interplay between ABA managing within plants, revealing both collaborative antagonistic effects elucidating underlying molecular mechanisms. Melatonin mutually influence each other’s synthesis, metabolism of other plant hormones, a key focus this study. The study highlights melatonin’s role aiding management through ABA-dependent pathways genes melatonin-ABA interaction. Specifically, downregulates synthesis upregulates catabolism genes, leading to reduced levels. also directly scavenges H 2 O , enhancing antioxidant enzyme activities, thereby underscoring mediating Moreover, plays an essential multiple physiological processes including stomatal behaviors, wax accumulation, delay leaf senescence, seed germination, seedlings among others. Recognizing these relationships Solanaceae holds great importance for improving agricultural practices crop In summary, offers comprehensive overview recent studies on interplay, serving as valuable resource researchers breeders dedicated fortifying resilience productivity challenging environments.

Language: Английский

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Phytomelatonin: From Intracellular Signaling to Global Horticulture Market

Journal of Pineal Research, Journal Year: 2024, Volume and Issue: 76(5)

Published: July 19, 2024

ABSTRACT Melatonin ( N ‐acetyl‐5‐methoxytryptamine), a well‐known mammalian hormone, has been having great relevance in the Plant World recent years. Many of its physiological actions plants are leading to possible features agronomic interest, especially those related improvements tolerance stressors and postharvest life fruits vegetables. Thus, through exogenous application melatonin or by modifying endogenous biosynthesis phytomelatonin, some change can be made functional levels tissues their responses. Also, acting respective phytomelatonin enzymes, regulating expression tryptophan decarboxylase TDC ), tryptamine 5‐hydroxylase T5H serotonin ‐acetyltransferase SNAT ‐acetylserotonin O ‐methyltransferase ASMT caffeic acid COMT recently action deacetylases on intermediates offers promising opportunities for improving vegetables marketability. Other regulators/effectors such as different transcription factors, protein kinases, phosphatases, miRNAs, protein–protein interactions, gasotransmitters nitric oxide hydrogen sulfide were also considered an exhaustive vision. interesting aspects role autophagic responses, posttranslational reprogramming protein‐phosphorylation, ubiquitylation, SUMOylation, PARylation, persulfidation, nitrosylation described phytomelatonin‐mediated responses discussed, including relationship several plant hormones, chilling injury fungal decay alleviating. The current data about receptor (CAND2/PMTR1), effect UV‐B light cold storage damage presented discussed. All this focus new preservation quality

Language: Английский

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Status, Gaps and Perspectives of Powdery Mildew Resistance Research and Breeding in Cucurbits

Critical Reviews in Plant Sciences, Journal Year: 2024, Volume and Issue: 43(4), P. 211 - 290

Published: March 6, 2024

Cucurbitaceae, the gourd family of flowering plants, is a very large and diverse family, order Cucurbitales, contains 95 genera 950–980 species food ornamental wild weedy mostly with high genetic diversity. This review focused on most important cucurbit crops (Cucumis sativus, Cucumis melo, Cucurbita spp., Citrullus lanatus, Momordica charantia, Lagenaria siceraria, Luffa acutangula) some their relatives as hosts powdery mildews (CPM). Powdery (PM) (Ascomycota, Erysiphales) are one frequently encountered easily visible groups plant pathogenic fungi > 900 species. They obligate biotrophs, they colonize above-ground tissues, leaves, though may also stems, petioles, flowers fruits, usually debilitators, not killers. These parasitic have been problematic cucurbits for long time world-wide, causing serious economic losses in yield quality. All economically host CPM. Seven PM different taxonomic positions, ranges, geographic distributions ecological requirements known cucurbits. CPM taxonomy denomination rapidly changed during last few decades through detailed analyses clarifications. At least three parasitize cucurbits: endoparasite Leveillula taurica (Lt) marginal importance; two ectoparasitic species, Golovinomyces orontii (Go), Podosphaera xanthii (Px), which world-wide. The pathogens differ distribution, occur together mixed infections. highly variable at population level virulence, race identities, fast adaptation pathogens. Cucurbit-CPM interactions complicated, between respective pathogen Here we present critical overview obstacles, gaps recent progress these matters six respect to resistance resources, genetics resistance, mapping development molecular markers, physiology mechanisms developments mlo-mediated patents, breeding.

Language: Английский

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Serotonin Mitigates ColdStress-Induced Damage in Kandelia obovata Through Modulating the Endogenous Melatonin- and Abscisic Acid Biosynthesis

International Journal of Molecular Sciences, Journal Year: 2025, Volume and Issue: 26(4), P. 1635 - 1635

Published: Feb. 14, 2025

Endogenous melatonin (MEL) and abscisic acid (ABA) are involved in the adaptation of plants to environmental stresses. The application exogenous serotonin (SER) can enhance their tolerance abiotic stress, such as cold. However, mechanism associated with serotonin-mediated defense against cold-induced damage mangroves is still poorly understood. In this study, we demonstrated that mangrove (Kandelia obovata) seedlings sprayed 200 μmol·L-1 exhibited enhanced cold tolerance, shown by reduced leaves loss photosynthesis when exposed low-temperature conditions. K. obovata upon treatment was subsequently investigated transcriptomic analysis. Serotonin caused changes differentially expressed genes (DEGs) regulation ABA biosynthesis responses stress. Under serotonin-treated showed a significant increase endogenous levels ABA. By contrast, under normal growth conditions, treated displayed no substantial change level, whereas level significantly increased. These findings might play an important role resistance effect would depend on activation synthesis.

Language: Английский

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Exosome-mediated communication between gastric cancer cells and macrophages: implications for tumor microenvironment

Frontiers in Immunology, Journal Year: 2024, Volume and Issue: 15

Published: Feb. 22, 2024

Gastric cancer (GC) is a malignant neoplasm originating from the epithelial cells of gastric mucosa. The pathogenesis GC intricately linked to tumor microenvironment within which reside. Tumor-associated macrophages (TAMs) primarily differentiate peripheral blood monocytes and can be broadly categorized into M1 M2 subtypes. M2-type TAMs have been shown promote growth, tissue remodeling, angiogenesis. Furthermore, they actively suppress acquired immunity, leading poorer prognosis reduced tolerance chemotherapy. Exosomes, contain myriad biologically active molecules including lipids, proteins, mRNA, noncoding RNAs, emerged as key mediators communication between TAMs. exchange these via exosomes markedly influence consequently impact progression. Recent studies elucidated correlation various clinicopathological parameters GC, such size, differentiation, infiltration depth, lymph node metastasis, TNM staging, highlighting pivotal role in development metastasis. In this review, we aim comprehensively examine bidirectional TAMs, implications alterations on immune escape, invasion, metastasis targeted therapeutic approaches for efficacy potential drug resistance strategies.

Language: Английский

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The role of melatonin in regulating horticultural crop production under various abiotic stresses

Scientia Horticulturae, Journal Year: 2023, Volume and Issue: 323, P. 112508 - 112508

Published: Oct. 6, 2023

Language: Английский

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Exogenously Applied Melatonin and Calcium Alleviate Salt Injuries to Growth, Physiological, and Biochemical Attributes of Borago officinalis

Journal of Plant Growth Regulation, Journal Year: 2023, Volume and Issue: 42(11), P. 6853 - 6869

Published: April 10, 2023

Language: Английский

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Melatonin as a master regulatory hormone for genetic responses to biotic and abiotic stresses in model plant Arabidopsis thaliana: a comprehensive review

Functional Plant Biology, Journal Year: 2024, Volume and Issue: 51(2)

Published: Feb. 4, 2024

Melatonin is a naturally occurring biologically active amine produced by plants, animals and microbes. This review explores the biosynthesis of melatonin in with particular focus on its diverse roles Arabidopsis thaliana , model species. affects abiotic biotic stress resistance A. . Exogenous endogenous addressed association various conditions, including cold stress, high light intense heat infection Botrytis cinerea or Pseudomonas as well seed germination lateral root formation. Furthermore, confers initiating antioxidant system, remedying photosynthesis suppression, regulating transcription factors involved (CBF, DREB, ZAT, CAMTA, WRKY33, MYC2, TGA) other stress-related hormones (abscisic acid, auxin, ethylene, jasmonic acid salicylic acid). article additionally addresses precursors, metabolic components, expression genes (COR CBF SNAT ASMT PIN PR1 PDF1.2 HSFA ) proteins (JAZ, NPR1) associated reducing both biological environmental stressors. future perspective rich agri-crops explored to enhance plant tolerance stresses, maximise crop productivity nutritional worth, which may help improve food security.

Language: Английский

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