Phytomelatonin: A key regulator of redox and phytohormones signaling against biotic/abiotic stresses

Redox Biology, Journal Year: 2023, Volume and Issue: 64, P. 102805 - 102805

Published: June 30, 2023

Plants being sessile in nature, are exposed to unwarranted threats as a result of constantly changing environmental conditions. These adverse factors can have negative impacts on their growth, development, and yield. Hormones key signaling molecules enabling cells respond rapidly different external internal stimuli. In plants, melatonin (MT) plays critical role the integration various signals activation stress-response networks develop defense mechanisms plant resilience. Additionally, tackle stress-induced alteration cellular redox equilibrium by regulating expression hemostasis-related genes proteins. The purpose this article is compile summarize scientific research pertaining MT's effects plants' resilience biotic abiotic stresses. Here, we summarized that MT exerts synergistic effect with other phytohormones, for instance, ethylene, jasmonic acid, salicylic activates defense-related against phytopathogens. Furthermore, interacts secondary messengers like Ca2+, nitric oxide, reactive oxygen species regulate network. This interaction triggers transcription alleviate stress-related responses plants. Hence, synergic diverse hormones demonstrates phytomelatonin's importance influencing multiple contribute harsh factors.

Language: Английский

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Melatonin as a Possible Natural Anti-Viral Compound in Plant Biocontrol

Plants, Journal Year: 2023, Volume and Issue: 12(4), P. 781 - 781

Published: Feb. 9, 2023

Melatonin is a multifunctional and ubiquitous molecule. In animals, melatonin hormone that involved in wide range of physiological activities also an excellent antioxidant. plants, it has been considered master regulator multiple processes as well hormonal homeostasis. Likewise, known for its role protective biomolecule activator tolerance resistance against biotic abiotic stress plants. Since infections by pathogens such bacteria, fungi viruses crops result large economic losses, interest aroused determining whether plays relevant plant defense systems general, particular. Currently, several strategies have applied to combat infection pathogens, one them the use eco-friendly chemical compounds induce systemic resistance. Few studies addressed biocontrol agent diseases caused viruses. Exogenous treatments used reduce incidence virus diseases, reducing symptoms, titer, even eradicating proliferation Tobacco Mosaic Virus, Apple Stem Grooving Rice Stripe Virus Alfalfa tomato, apple, rice eggplant, respectively. The possibilities using possible natural are discussed.

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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The OsEBF1-OsEIL5-OsPP91 module regulates rice heat tolerance via ubiquitination and transcriptional activation

Cell Reports, Journal Year: 2025, Volume and Issue: 44(2), P. 115271 - 115271

Published: Feb. 1, 2025

Highlights•The F box protein OsEBF1 negatively regulates rice thermotolerance•OsEBF1 interacts with and degrades the transcription factor OsEIL5•OsEIL5 confers tolerance to heat stress at seedling reproductive stages•As target of OsEIL5, OsPP91 is indispensable for toleranceSummaryUnderstanding regulatory mechanisms underlying plant response important developing climate-resilient crops, including (Oryza sativa). Here, we report that one member ETHYLENE INSENSITIVE3-LIKE family, positively stages. OsEIL5 directly binds promoter (encoding type 2C phosphatase) activates its expression. required thermotolerance, overexpressing in oseil5-1 partially rescues sensitivity. The it through ubiquitination pathway, resulting reduction expression ultimately weakening tolerance. Knocking out EBF1R13 line reduces extremely high Taken together, our work uncovers a mechanism finely thermotolerance OsEBF1-OsEIL5-OsPP91 module posttranslational transcriptional levels.Graphical abstract

Language: Английский

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Melatonin: A promising candidate for maintaining food security under the threat of phytopathogens

Plant Physiology and Biochemistry, Journal Year: 2023, Volume and Issue: 198, P. 107691 - 107691

Published: April 5, 2023

Language: Английский

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Recent Advances in Dissecting the Function of Ethylene in Interaction between Host and Pathogen

Journal of Agricultural and Food Chemistry, Journal Year: 2024, Volume and Issue: 72(9), P. 4552 - 4563

Published: Feb. 20, 2024

Pathogens influence the growth and development of plants, resulting in detrimental damage to their yields quality. Ethylene, a gaseous phytohormone, serves pivotal function modulating diverse physiological processes including defense mechanisms against pathogen invasion. Ethylene biosynthesis is involved both plants pathogens. Recent empirical research elucidates intricate interactions regulatory between ethylene pathogens across various plant species. In this review, we provide comprehensive overview latest findings concerning ethylene's role its networks host-pathogen interactions. Additionally, explore crosstalk other phytohormones. Points regarding emission modulation by are also emphasized. Moreover, discuss potential unresolved issues field that warrant further investigation.

Language: Английский

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Melatonin: The Multifaceted Molecule in Plant Growth and Defense

International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 25(12), P. 6799 - 6799

Published: June 20, 2024

Melatonin (MEL), a hormone primarily known for its role in regulating sleep and circadian rhythms animals, has emerged as multifaceted molecule plants. Recent research shed light on diverse functions plant growth defense mechanisms. This review explores the intricate roles of MEL responses. is involved owing to influence regulation. promotes root elongation lateral formation enhances photosynthesis, thereby promoting overall productivity. Additionally, implicated rhythm plants, affecting key physiological processes that patterns. also exhibits antioxidant properties scavenges reactive oxygen species, mitigating oxidative stress. Furthermore, it activates pathways against various biotic stressors. production secondary metabolites contribute resistance environmental changes. MEL’s ability modulate response abiotic stresses been extensively studied. It regulates stomatal closure, conserves water, stress tolerance by activating stress-responsive genes modulating signaling pathways. Moreover, nitric oxide cooperate responses, defense, growth. Understanding mechanisms underlying actions plants will provide new insights into development innovative strategies enhancing crop productivity, improving tolerance, combating diseases. Further this area deepen our knowledge potential applications sustainable agriculture.

Language: Английский

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Caffeic Acid O-Methyltransferase Gene Family in Mango (Mangifera indica L.) with Transcriptional Analysis under Biotic and Abiotic Stresses and the Role of MiCOMT1 in Salt Tolerance

International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 25(5), P. 2639 - 2639

Published: Feb. 24, 2024

Caffeic acid O-methyltransferase (COMT) participates in various physiological activities plants, such as positive responses to abiotic stresses and the signal transduction of phytohormones. In this study, 18 COMT genes were identified chromosome-level reference genome mango, named MiCOMTs. A phylogenetic tree containing nine groups (I-IX) was constructed based on amino sequences 71 proteins from seven species. The indicated that members MiCOMTs could be divided into four groups. Quantitative real-time PCR showed all MiCOMT have particularly high expression levels during flowering. different under biotic stresses, including salt stimulated drought ABA SA treatment, well Xanthomonas campestris pv. mangiferaeindicae Colletotrichum gloeosporioides infection, respectively. Among them, level MiCOMT1 significantly up-regulated at 6–72 h after stresses. results gene function analysis via transient overexpression Nicotiana benthamiana can promote accumulation MeJA, improve tolerance mango. These are beneficial future researchers aiming understand biological functions molecular mechanisms genes.

Language: Английский

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Identification of the ERF gene family of Mangifera indica and the defense response of MiERF4 to Xanthomonas campestris pv. mangiferaeindicae

Gene, Journal Year: 2024, Volume and Issue: 912, P. 148382 - 148382

Published: March 15, 2024

An important regulatory role for ethylene-responsive transcription factors (ERFs) is in plant growth and development, stress response, hormone signaling. However, AP2/ERF family genes mango have not been systematically studied. In this study, a total of 113 were identified from the genome phylogenetically classified into five subfamilies: AP2 (28 genes), DREB (42 ERF (33 RAV (6 Soloist (4 genes). Of these, family, conjunction with Arabidopsis rice, forms phylogenetic tree divided seven groups, which MiERF members. Analysis gene structure cis-elements showed that each contains only one structural domain, contain large number associated signaling response. Collinearity tests revealed high degree homology between MiERFs CsERFs. Tissue-specific stress-responsive expression profiling are primarily involved regulation reproductive differentially positively expressed response to external hormones pathogenic bacteria. Physiological results gain-of-function analysis MiERF4 transiently overexpressed tobacco transient resulted decreased colony count callose deposition, as well varying degrees hormonal signals such ETH, JA, SA. Thus, may be JA/ETH pathway enhance defense against This study provides basis further research on function lays foundation selection disease-resistant mango.

Language: Английский

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NF‐YC15 transcription factor activates ethylene biosynthesis and improves cassava disease resistance

Plant Biotechnology Journal, Journal Year: 2024, Volume and Issue: 22(9), P. 2424 - 2434

Published: April 10, 2024

Summary The nuclear factor Y (NF‐Y) transcription factors play important roles in plant development and physiological responses. However, the relationship between NF‐Y, hormone stress resistance tropical crops remains unclear. In this study, we identified MeNF‐YC15 gene NF‐Y family that significantly responded to Xanthomonas axonopodis pv. manihotis ( Xam ) treatment. Using ‐silenced ‐overexpressed cassava plants, elucidated positively regulated disease bacterial blight (CBB). Notably, illustrated downstream genes revealed direct genetic 1‐aminocyclopropane‐1‐carboxylic acid (ACC) oxidase (MeACO1)‐ethylene module resistance, as evidenced by rescued susceptibility of silenced plants with ethylene treatment or overexpressing MeACO1. addition, physical interaction 2C‐type protein phosphatase 1 (MePP2C1) inhibited transcriptional activation MeACO1 MeNF‐YC15. summary, MePP2C1‐MeNF‐YC15 modulates biosynthesis providing network for improvement.

Language: Английский

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