Melatonin—Angel of Plant Growth Regulation and Protection

Advanced Agrochem, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

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The Physiological Mechanism of Exogenous Melatonin Regulating Salt Tolerance in Eggplant Seedlings

Agronomy, Journal Year: 2025, Volume and Issue: 15(2), P. 270 - 270

Published: Jan. 22, 2025

There is little study on melatonin’s ability to prevent salt damage in eggplants, despite the fact that it a strong antioxidant plants has been found help mitigate variety of adverse challenges. In this study, we used “Anhui Eggplant No.8” as test material and simulated stress by irrigating roots with 150 mmol·L NaCl solution. Subsequently, treated eggplants different concentrations exogenous melatonin (0, 50, 100, 150, 200, 250 μmol·L) assessed plant traits an array physiological biochemical indices following application observe impact stress. Our results indicate at concentration 200 μmol·L can significantly alleviate inhibition eggplant photosynthesis under increasing content chlorophyll leaves activity enzymes. This leads notable increase levels non-enzyme antioxidants osmotic regulatory substances. As result, capacity enhanced, degree membrane lipid peroxidation reduced, growth seedlings effectively promoted, thereby strengthening tolerance seedlings. Fluorescence quantitative data analysis indicates SmCAT4 indeed gene positively regulates However, SmPPO family, did not find any genes respond research provides theoretical foundation for improving yield productivity quality protected farming clarifying mechanism which controls

Language: Английский

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Melatonin improves the lead tolerance in Plantago ovata by modulating ROS homeostasis, phytohormone status and expression of stress-responsive genes

Plant Cell Reports, Journal Year: 2025, Volume and Issue: 44(2)

Published: Jan. 27, 2025

Language: Английский

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Comprehensive Evaluation and Transcriptome Analysis Reveal the Salt Tolerance Mechanism in Semi-Wild Cotton (Gossypium purpurascens)

International Journal of Molecular Sciences, Journal Year: 2023, Volume and Issue: 24(16), P. 12853 - 12853

Published: Aug. 16, 2023

Elevated salinity significantly threatens cotton growth, particularly during the germination and seedling stages. The utilization of primitive species Gossypium hirsutum, specifically purpurascens, has potential to facilitate restoration genetic diversity that been depleted due selective breeding in modern cultivars. This investigation evaluated 45 G. purpurascens varieties a salt-tolerant variety based on 34 morphological, physiological, biochemical indicators comprehensive salt tolerance index values. study effectively identified total 19 two salt-resistant varieties. Furthermore, transcriptome sequencing genotype (Nayanmian-2; NY2) salt-sensitive (Sanshagaopao-2; GP2) revealed 2776, 6680, 4660, 4174 differentially expressed genes (DEGs) under 0.5, 3, 12, 24 h stress. Gene ontology enrichment analysis indicated DEGs exhibited significant biological processes like metabolic (GO:0008152) cellular (GO:0009987) processes. MAPK signaling, plant-pathogen interaction, starch sucrose metabolism, plant hormone photosynthesis, fatty acid metabolism were as key KEGG pathways involved Among DEGs, including NAC, MYB, WRKY, ERF, bHLH, bZIP, transcription factors, receptor-like kinases, carbohydrate-active enzymes crucial tolerance. Weighted gene co-expression network (WGCNA) unveiled associations genotypes with flavonoid carbon signaling pathways. Identifying nine hub (MYB4, MYB105, MYB36, bZIP19, bZIP43, FRS2 SMARCAL1, BBX21, F-box) across various intervals offered insights into transcriptional regulation mechanism purpurascens. lays groundwork for understanding important networks response stress, thereby providing foundation enhancing upland cotton.

Language: Английский

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Melatonin-Mediated Molecular Responses in Plants: Enhancing Stress Tolerance and Mitigating Environmental Challenges in Cereal Crop Production

International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 25(8), P. 4551 - 4551

Published: April 21, 2024

Cereal crops are crucial for global food security; however, they susceptible to various environmental stresses that significantly hamper their productivity. In response, melatonin has emerged as a promising regulator, offering potential benefits stress tolerance and crop growth. This review explores the effects of on maize, sorghum, millet, rice, barley, wheat, aiming enhance resilience stress. The application shown outcomes, improving water use efficiency reducing transpiration rates in millet under drought conditions. Furthermore, it enhances salinity heavy metal by regulating activity stress-responsive genes. Similarly, sorghum its resistance high temperatures, low humidity, nutrient deficiency, potentially involving modulation antioxidant defense aspects related photosynthetic Melatonin also exerts protective against drought, salinity, metal, extreme waterlogging barley decreasing reactive oxygen species (ROS) production through system. molecular reactions upregulated photosynthesis, mechanisms, metabolic pathway, genes downregulated susceptibility conclusion, serves versatile tool cereal crops, bolstering promoting sustainable development. Further investigations warranted elucidate underlying mechanisms refine techniques fully harness role systems.

Language: Английский

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Have All of the Phytohormonal Properties of Melatonin Been Verified?

International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 25(6), P. 3550 - 3550

Published: March 21, 2024

Melatonin is a ubiquitous regulator in plants and performs variety of physiological roles, including resistance to abiotic stress, regulation growth development, enhancement plant immunity. exhibits the characteristics phytohormone with its pleiotropic effects, biosynthesis, conjugation, catabolism, effective concentration, shape location dose-response curves. In addition, CAND2/PMTR1, phytomelatonin receptor candidate belonging G protein-coupled receptors (GPCRs), supports concept melatonin as phytohormone. However, biochemistry needs be further characterized. particular, some experimental findings date cannot explained by known GPCR signaling mechanisms, so studies are needed explore possibility novel mechanisms.

Language: Английский

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The Physiological and Molecular Mechanisms of Exogenous Melatonin Promote the Seed Germination of Maize (Zea mays L.) under Salt Stress

Plants, Journal Year: 2024, Volume and Issue: 13(15), P. 2142 - 2142

Published: Aug. 2, 2024

Salt stress caused by high concentrations of Na

Language: Английский

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Melatonin-Mediated Enhancement of Photosynthetic Capacity and Photoprotection Improves Salt Tolerance in Wheat

Plants, Journal Year: 2023, Volume and Issue: 12(23), P. 3984 - 3984

Published: Nov. 27, 2023

The role of melatonin in plant growth and response to environmental stress has been widely demonstrated. However, the physiological molecular regulation salt tolerance wheat seedlings by remains unclear. In this study, we investigated changes phenotype, physiology, photosynthetic parameters, transcript levels reveal wheat. results indicate that application exogenous significantly alleviates inhibition, reactive oxygen species accumulation, membrane oxidative damage induced Additionally, increased antioxidant enzyme activity regulated gas exchange. Transcriptomic data showed a significant up-regulation genes encoding light-harvesting chlorophyll protein complex proteins photosynthesis related carotenoid biosynthesis under influence melatonin. These suggest improves enhancing antioxidant, photoprotective, activities.

Language: Английский

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Full-length transcriptome and RNA-Seq analyses reveal the resistance mechanism of sesame in response to Corynespora cassiicola

BMC Plant Biology, Journal Year: 2024, Volume and Issue: 24(1)

Published: Jan. 23, 2024

Abstract Background Corynespora leaf spot is a common disease occurring in sesame, and the causes yellowing even shedding, which affects growth quality of sesame. At present, mechanism sesame resistance to this still unclear. Understanding highly important for control infection. In study, leaves resistant variety (R) susceptible (S) were collected at 0–48 hpi transcriptome sequencing, used combined third-generation long-read next-generation short-read technology approach identify some key genes main pathways related resistance. Results The gene expression levels two varieties significantly different 0, 6, 12, 24, 36 48 hpi, indicating that up-regulation differentially expressed R might enhanced Moreover, with phenotypic observations inoculated time points, we found 12 was point leading difference between molecular level. WGCNA identified modules associated resistance, screened out 10 but low S, belonged transcription factors (WRKY, AP2/ERF-ERF, NAC types) protein kinases (RLK-Pelle_DLSV, RLK-Pelle_SD-2b, RLK-Pelle_WAK types). These could be response infection by cassiicola . GO KEGG enrichment analysis showed specific enriched, manifested as biologically pathways, such plant signalling hormone transduction, plant-pathogen interaction, carbon metabolism, phenylpropanoid biosynthesis, glutathione MAPK other stress-related pathways. Conclusions This study provides an resource contributing will deepen our understanding regulation paving way further breeding

Language: Английский

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Crosstalk of melatonin with major phytohormones and growth regulators in mediating abiotic stress tolerance in plants

South African Journal of Botany, Journal Year: 2023, Volume and Issue: 163, P. 201 - 216

Published: Oct. 29, 2023

Language: Английский

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