Melatonin-Mediated Abiotic Stress Tolerance in Plants

Frontiers in Plant Science, Journal Year: 2022, Volume and Issue: 13

Published: May 9, 2022

Melatonin is a multi-functional molecule that ubiquitous in all living organisms. performs essential roles plant stress tolerance; its application can reduce the harmful effects of abiotic stresses. Plant melatonin biosynthesis, which usually occurs within chloroplasts, and related metabolic pathways have been extensively characterized. regulates responses by directly inhibiting accumulation reactive oxygen nitrogen species, indirectly affecting response pathways. In this review, we summarize recent research concerning metabolism, antioxidation; focus on melatonin-mediated tolerance to stresses including drought, waterlogging, salt, heat, cold, heavy metal toxicity, light others. We also examine exogenous treatment plants under stress. Finally, discuss future perspectives applications plants.

Language: Английский

---

Role of Promising Secondary Metabolites to Confer Resistance Against Environmental Stresses in Crop Plants: Current Scenario and Future Perspectives

Frontiers in Plant Science, Journal Year: 2022, Volume and Issue: 13

Published: May 9, 2022

Plants often face incompatible growing environments like drought, salinity, cold, frost, and elevated temperatures that affect plant growth development leading to low yield and, in worse circumstances, death. The arsenal of versatile compounds for consumption structure is called metabolites, which allows them develop strategies stop enemies, fight pathogens, replace their competitors go beyond environmental restraints. These elements are formed under particular abiotic stresses flooding, heat, etc., biotic stress such as a pathogenic attack, thus associated with survival strategy plants. Stress responses plants vigorous include multifaceted crosstalk between different levels regulation, including regulation metabolism expression genes morphological physiological adaptation. To date, many these biosynthetic pathways have been found the kingdom. Metabolites amino acids, phenolics, hormones, polyamines, compatible solutes, antioxidants, pathogen related proteins (PR proteins), etc. crucial growth, tolerance, defense. This review focuses on promising metabolites involved tolerance severe conditions events signaling mediation stress-induced metabolic changes presented.

Language: Английский

---

Functions and prospects of melatonin in plant growth, yield, and quality

Journal of Experimental Botany, Journal Year: 2022, Volume and Issue: 73(17), P. 5928 - 5946

Published: May 30, 2022

Abstract Melatonin (N-acetyl-5-methoxytryptamine) is an indole molecule widely found in animals and plants. It well known that melatonin improves plant resistance to various biotic abiotic stresses due its potent free radical scavenging ability while being able modulate signaling response pathways through mostly unknown mechanisms. In recent years, increasing number of studies have shown plays a crucial role improving crop quality yield by participating the regulation aspects growth development. Here, we review effects on vegetative reproductive development, systematically summarize molecular regulatory network. Moreover, effective concentrations exogenously applied different crops or at stages same are analysed. addition, compare endogenous phytomelatonin organs, evaluate potential function circadian rhythms. The prospects approaches regulating exogenous application appropriate melatonin, modification metabolism-related genes, use nanomaterials other technologies improve utilization efficiency also discussed.

Language: Английский

---

Hormonal interactions underlying parthenocarpic fruit formation in horticultural crops

Horticulture Research, Journal Year: 2022, Volume and Issue: 9

Published: Jan. 1, 2022

In some horticultural crops, such as Cucurbitaceae, Solanaceae, and Rosaceae species, fruit set development can occur without the fertilization of ovules, a process known parthenocarpy. Parthenocarpy is an important agricultural trait that not only mitigate yield losses caused by environmental stresses but also induce seedless fruit, which desirable for consumers. present review, induction parthenocarpic application hormones auxins (2,4 dichlorophenoxyacetic acid; naphthaleneacetic acid), cytokinins (forchlorfenuron; 6-benzylaminopurine), gibberellic acids, brassinosteroids first presented. Then, molecular mechanisms formation, mainly related to plant hormones, are Auxins, categorized primary players in initiating set. Other ethylene, brassinosteroids, melatonin, participate formation. Additionally, synergistic antagonistic crosstalk between these crucial deciding fate Finally, we highlight knowledge gaps suggest future directions research on formation crops.

Language: Английский

---

Melatonin Function and Crosstalk with Other Phytohormones under Normal and Stressful Conditions

Genes, Journal Year: 2022, Volume and Issue: 13(10), P. 1699 - 1699

Published: Sept. 22, 2022

Melatonin was discovered in plants the late nineties, but its role, signaling, and crosstalk with other phytohormones remain unknown. Research on melatonin has risen dramatically recent years role of this putative plant hormone under biotic abiotic stress conditions been reported. In present review, we discuss main functions growth development plants, stresses, such as water (waterlogging drought), extreme temperature (low high), salinity, heavy metal, light-induced stress. Similarly, also stresses (antiviral, antibacterial, antifungal effects). Moreover, review meticulously discusses auxins, gibberellic acids, cytokinins, ethylene, salicylic acid normal stressful reports receptors signaling plants. All these aspects suggest that phytomelatonin is a key player crop improvement regulation.

Language: Английский

---

Mechanistic insights on melatonin-mediated plant growth regulation and hormonal cross-talk process in solanaceous vegetables

Scientia Horticulturae, Journal Year: 2022, Volume and Issue: 308, P. 111570 - 111570

Published: Oct. 14, 2022

Language: Английский

---

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

---

Insight into melatonin-mediated response and signaling in the regulation of plant defense under biotic stress

Plant Molecular Biology, Journal Year: 2021, Volume and Issue: 109(4-5), P. 385 - 399

Published: Nov. 16, 2021

Language: Английский

---

Phytomelatonin: An overview of the importance and mediating functions of melatonin against environmental stresses

Physiologia Plantarum, Journal Year: 2020, Volume and Issue: 172(2), P. 820 - 846

Published: Nov. 7, 2020

Abstract Recently, melatonin has gained significant importance in plant research. The presence of the kingdom been known since 1995. It is a molecule that conserved wide array evolutionary distant organisms. Its functions and characteristics have found to be similar both plants animals. review focuses on role pertaining physiological higher plants. Melatonin regulates regarding auxin activity, root, shoot, explant growth, activates germination seeds, promotes rhizogenesis (growth adventitious lateral roots), holds up impelled leaf senescence. natural bio‐stimulant creates resistance field crops against various abiotic stress, including heat, chemical pollutants, cold, drought, salinity, harmful ultra‐violet radiation. full potential regulating still needs explored by further

Language: Английский

---

Inhibition of downy blight and enhancement of resistance in litchi fruit by postharvest application of melatonin

Food Chemistry, Journal Year: 2021, Volume and Issue: 347, P. 129009 - 129009

Published: Jan. 8, 2021

Language: Английский

---