Escherichia coli RimI Encodes Serotonin N-Acetyltransferase Activity and Its Overexpression Leads to Enhanced Growth and Melatonin Biosynthesis DOI Creative Commons
Kyungjin Lee, Kyoungwhan Back

Biomolecules, Journal Year: 2023, Volume and Issue: 13(6), P. 908 - 908

Published: May 30, 2023

Serotonin N-acetyltransferase (SNAT) functions as the penultimate or final enzyme in melatonin biosynthesis, depending on substrate. The Escherichia coli orthologue of archaeal SNAT from Thermoplasma volcanium was identified RimI (EcRimI), with 42% amino acid similarity to SNAT. EcRimI has been reported be an enzyme. Here, we investigated whether also exhibits activity. To achieve this goal, purified recombinant and examined its kinetics. As expected, showed activity toward various amine substrates including serotonin 5-methoxytryptamine, Km Vmax values 531 μM 528 pmol/min/mg protein 201 587 respectively. In contrast rimI mutant E. strain that no growth defect, overexpression exhibited a 2-fold higher rate than control after 24 h incubation nutrient-rich medium. produced more presence 5-methoxytryptamine. enhanced effect observed under cadmium stress. associated expression attributed increased activity, synthesis melatonin, combined effects both.

Language: Английский

Analysis of Heavy Metal Impacts on Cereal Crop Growth and Development in Contaminated Soils DOI Creative Commons
Ionela Cătălina Vasilachi, Vasile Stoleru, Maria Gavrilescu

et al.

Agriculture, Journal Year: 2023, Volume and Issue: 13(10), P. 1983 - 1983

Published: Oct. 12, 2023

The impact of heavy metal presence in soil on cereal crops is a growing concern, posing significant challenges to global food security and environmental sustainability. Cereal crops, vital sources nutrition, face the risk contamination with toxic metals released into environment through human activities. This paper explores key aspects requiring thorough investigation foster innovation understand intricate interactions between cereals. Visible symptoms physiological changes resulting from contamination, such as chlorosis stunted growth, demand further research devise targeted mitigation strategies sustainable agricultural practices. Root barrier formation, mycorrhizal symbiosis, metal-binding proteins emerge critical defence mechanisms for combating stress, offering opportunities developing metal-tolerant varieties. Research bioavailability safety implications grains safeguard health. reveals that multidisciplinary collaboration cutting-edge technologies are essential promoting beyond state art elucidating mitigating impacts crops. Genetic breeding approaches show promise varieties, while agronomic practices amendments can reduce toxicity. Unravelling complex underlying uptake tolerance agriculture worldwide Embracing pollution proactive secure resilient future amid evolving conditions.

Language: Английский

Citations

48

Melatonin-mediated development and abiotic stress tolerance in plants DOI Creative Commons
Yue Pan, Xiaoshan Xu, Li Lei

et al.

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

Published: Jan. 26, 2023

Melatonin is a multifunctional molecule that has been widely discovered in most plants. An increasing number of studies have shown melatonin plays essential roles plant growth and stress tolerance. It extensively applied to alleviate the harmful effects abiotic stresses. In view its role regulating aspects development, we ponder summarize scientific discoveries about seed germination, root flowering, fruit maturation, senescence. Under biotic stresses, brings together many pathways increase access treatments for symptoms plants counteract negative effects. capacity tackle regulation redox, hormone networks, endogenous melatonin. Furthermore, expression levels several genes contents diverse secondary metabolites, such as polyphenols, terpenoids, alkaloids, were significantly altered. this review, intend examine actions from broader perspective, explore range physiological functions, analyze relationship between other metabolites metabolic pathways.

Language: Английский

Citations

41

Melatonin Role in Plant Growth and Physiology under Abiotic Stress DOI Open Access
Irshad Ahmad, Guanglong Zhu, Guisheng Zhou

et al.

International Journal of Molecular Sciences, Journal Year: 2023, Volume and Issue: 24(10), P. 8759 - 8759

Published: May 15, 2023

Phyto-melatonin improves crop yield by mitigating the negative effects of abiotic stresses on plant growth. Numerous studies are currently being conducted to investigate significant performance melatonin in crops regulating agricultural growth and productivity. However, a comprehensive review pivotal phyto-melatonin morpho-physiological biochemical activities under needs be clarified. This focused research activities, regulation, redox status, signal transduction plants stresses. Furthermore, it also highlighted role defense systems as biostimulants stress conditions. The study revealed that enhances some leaf senescence proteins, protein further interacts with plant’s photosynthesis activity, macromolecules, changes response stress. Our goal is thoroughly evaluate stress, which will help us better understand mechanism regulates yield.

Language: Английский

Citations

37

Melatonin Enhances the Photosynthesis and Antioxidant Enzyme Activities of Mung Bean under Drought and High-Temperature Stress Conditions DOI Creative Commons

Anitha Kuppusamy,

A. Senthil,

Kalarani M. Karuppusami

et al.

Plants, Journal Year: 2023, Volume and Issue: 12(13), P. 2535 - 2535

Published: July 3, 2023

Mung bean, a legume, is sensitive to abiotic stresses at different growth stages, and its yield potential affected by drought high-temperature stress the stage. Melatonin multifunctional hormone that plays vital role in plant defense mechanisms. This study aimed evaluate efficiency of melatonin under individual combined mung bean. An experiment was laid out with five treatments, including an exogenous application 100 µM as seed treatment, foliar spray, combination both treatment well absolute control (ambient condition) (stress without treatment). Stresses were imposed during bean's reproductive stage (31-40 DAS) for ten days. Results revealed significantly decreased chlorophyll index, Fv/Fm ratio, photosynthetic rate, stomatal conductance, transpiration rate through increased reactive oxygen species (ROS) production. Foliar concentration enhanced activity antioxidant enzymes such superoxide dismutase, catalase, ascorbate peroxidase metabolites involved osmoregulation ion homeostasis; thereby, it improves physiological yield-related traits bean

Language: Английский

Citations

30

Brain washing and neural health: role of age, sleep, and the cerebrospinal fluid melatonin rhythm DOI
Russel J. Reıter, Ramaswamy Sharma, Maira Smaniotto Cucielo

et al.

Cellular and Molecular Life Sciences, Journal Year: 2023, Volume and Issue: 80(4)

Published: March 14, 2023

Language: Английский

Citations

28

Exogenous Melatonin Enhances the Yield and Secondary Metabolite Contents of Prunella vulgaris by Modulating Antioxidant System, Root Architecture and Photosynthetic Capacity DOI Creative Commons

Qingshan Chang,

Lixia Zhang, Shuangchen Chen

et al.

Plants, Journal Year: 2023, Volume and Issue: 12(5), P. 1129 - 1129

Published: March 2, 2023

Melatonin (MT) plays a number of key roles in regulating plant growth and secondary metabolite accumulation. Prunella vulgaris is an important traditional Chinese herbal medicinal which used for the treatment lymph, goiter, mastitis. However, effect MT on yield component content P. remains still unclear. In this research, we have examined influence different concentrations (0, 50, 100, 200, 400 μM) physiological characteristics, contents, biomass. The results showed that 50–200 μM had positive vulgaris. at 100 greatly increased activities superoxide dismutase peroxidase, contents soluble sugar proline, obviously decreased relative electrical conductivity, malondialdehyde hydrogen peroxide leaves. Furthermore, it markedly promoted development root system, photosynthetic pigments, improved performance photosystems I II coordination both photosystems, enhanced capacity addition, significantly dry mass whole spica accumulation total flavonoids, phenolics, caffeic acid, ferulic rosmarinic hyperoside These findings demonstrated application could effectively activate antioxidant defense system vulgaris, protect apparatus from photooxidation damage, improve absorption capacity, thereby promoting metabolites

Language: Английский

Citations

23

Melatonin-Mediated Molecular Responses in Plants: Enhancing Stress Tolerance and Mitigating Environmental Challenges in Cereal Crop Production DOI Open Access
Ihsan Muhammad, Shakeel Ahmad, Weijun Shen

et al.

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

Citations

11

Melatonin-Polyamine Interplay in the Regulation of Stress Responses in Plants DOI
Rahul Kumar Tiwari, Ravinder Kumar, Milan Kumar Lal

et al.

Journal of Plant Growth Regulation, Journal Year: 2022, Volume and Issue: 42(8), P. 4834 - 4850

Published: July 16, 2022

Language: Английский

Citations

38

Melatonin Involved in Protective Effects against Cadmium Stress in Wolffia arrhiza DOI Open Access
Magdalena Chmur, Andrzej Bajguz

International Journal of Molecular Sciences, Journal Year: 2023, Volume and Issue: 24(2), P. 1178 - 1178

Published: Jan. 7, 2023

Melatonin (MT) is a new plant hormone that protects against adverse environmental conditions. In the present study, responses of Wolffia arrhiza exposed to cadmium (Cd) and MT were analyzed. Quantitative analysis precursors its biosynthesis was performed using LC-MS-MS. The photosynthetic pigments phytochelatins (PCs) contents determined HPLC, while protein monosaccharides, stress markers, antioxidant levels spectrophotometric methods. Interestingly, endogenous level substrates in W. 1-100 µM Cd significantly higher compared control. Additionally, application 25 intensified these compounds. most stimulatory effect on growth content pigments, protein, sugars observed plants treated with MT. contrast, treatment caused decrease weight compounds, mitigated inhibitory Cd. enhanced markers; simultaneously, reduced their duckweed Cd, PC increased by These results confirmed Furthermore, presence reported for first time arrhiza. summary, an essential phytohormone development, especially during heavy metal stress.

Language: Английский

Citations

18

Melatonin — This is important to know DOI Creative Commons
Izabela Kołodziejczyk, Andrzej Kaźmierczak

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 919, P. 170871 - 170871

Published: Feb. 9, 2024

MEL (N-acetyl-5-methoxytryptamine) is a well-known natural compound that controls cellular processes in both plants and animals primarily found as neurohormone. Its roles have been described very broadly, from its antioxidant function related to the photoperiod determination of seasonal rhythms role signalling molecule, imitating action plant hormones (or even being classified prohormone). positively affects yield survival by increasing their tolerance unfavourable biotic abiotic conditions, which makes widely applicable ecological farming stimulant growth development. Thus, it called phytobiostimulator. In this review, we discuss genesis functions, presence at level effects on gene expression development, can ensure under conditions they encounter. Moreover, consider future application possibilities agriculture.

Language: Английский

Citations

7