Versatile Roles of Melatonin in Growth and Stress Tolerance in Plants

Zhang, Tengguo; Wang, Juan; Sun, Yuanpei; Zhang, Lu; Zheng, Sheng

doi:10.1007/s00344-021-10317-2

Cited by 43 publications

(31 citation statements)

References 147 publications

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“…This result was in agreement with previous findings indicating that a negative correlation exists between the MDA content and the activity of antioxidant enzymes (Esfandiari et al, 2008;Younesi and Moradi, 2015). The possible explanation is that melatonin treatment increases the autophagy induction capacity and thereby reduces the accumulation of oxidized proteins, while also simultaneously controlling the ROS accumulation by upregulating the antioxidant enzymes activity and their transcript levels to mitigate membrane lipid peroxidation under salinization stress (Wang et al, 2015;Sun et al, 2020;Zhang T. G. et al, 2022). Additionally, it improves the activity of nonenzymatic antioxidants by regulating the activity of enzymes in the ASA-GSH cycle, thereby further improving the free radical scavenging capacity (Ni et al, 2018).…”

Section: Effect Of Melatonin Priming On Antioxidant Defense Of Suaeda...supporting

confidence: 93%

“…Multiple studies have shown that melatonin is a major regulator not only involved in seed germination, but also in diverse physiological and biochemical processes like stress resistancerelated gene expression, boosting the antioxidant defense system, and reserve mobilization (Cao et al, 2019;Chen et al, 2021;Zhang T. G. et al, 2022). Our results showed that melatonin priming positively affected seed germination of S. corniculata in a concentration-dependent manner, while significantly increasing the GR, GS, and GI of S. corniculata seed under the M50 treatment.…”

Section: Effect Of Melatonin Priming On the Seed Germination Of Suaed...supporting

confidence: 48%

“…The priming treatment enhances the inherent tolerance potential of seeds through many mediums, which, based on hormone, have been widely applied in the pretreatment of commercial seeds (Li et al, 2020;. Melatonin (N-acetyl-5-methoxtryptamine), an endogenous indoleamine, is a highly evolutionarily conserved multifunctional molecule, which is proven to be an abiotic anti-stress hormone in seeds and is recently being considered as a research hotspot in the priming domain (Li et al, 2016;Arnao and Hernandez-Ruiz, 2019;Zhang T. G. et al, 2022). Recent studies have demonstrated that melatonin priming boosted the activities and transcript levels of antioxidant enzymes in seeds for effectively scavenging salinization stress-induced ROS, and consequently improving their salinization stress tolerance ability during seed germination (Yan et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

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Effects of Melatonin Priming on Suaeda corniculata Seed Germination, Antioxidant Defense, and Reserve Mobilization: Implications for Salinized Wetland Restoration

et al. 2022

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Melatonin priming has been widely reported to positively affect seed germination under abiotic stresses. However, there is still a gap in knowledge on how melatonin priming impacts the seed germination and physiological change of wetland plant species. We assessed the effects of different melatonin concentrations on germination characteristics, antioxidant defense, and reserve mobilization of Suaeda corniculata seeds. Priming of S. corniculata seeds with 50 μM melatonin significantly improved the germination rate, germination speed, germination index, superoxide dismutase and peroxidase activity, and soluble sugar content as compared with the control, and effectively reduced the malondialdehyde content, promoted starch, soluble protein, and fat mobilization. However, the stress tolerance ability of S. corniculata seeds was reduced by high melatonin concentration. The structural equation model indicated that the melatonin priming directly affects the seed germination, while also indirectly regulating the antioxidant defense system and reserve mobilization. In conclusion, melatonin priming affects the S. corniculata seed germination under salinization stress in a concentration-dependent manner via both direct and indirect regulatory pathways. Insights into these aspects will advance our understanding of how melatonin priming affects S. corniculata seed germination and provide invaluable information and technical support for the restoration of salinized wetlands in the Momoge National Nature Reserve.

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Section: Effect Of Melatonin Priming On Antioxidant Defense Of Suaeda...supporting

confidence: 93%

Section: Effect Of Melatonin Priming On the Seed Germination Of Suaed...supporting

confidence: 48%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of Melatonin Priming on Suaeda corniculata Seed Germination, Antioxidant Defense, and Reserve Mobilization: Implications for Salinized Wetland Restoration

et al. 2022

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“…Similar results were reported for Carthamus tinctorius seedlings [ 60 ]. In summary, MT-induced production of PCs and storage of Cd-PC complexes in vacuoles may play a crucial role in conferring Cd tolerance in plants [ 71 ].…”

Section: Discussionmentioning

confidence: 99%

Melatonin Involved in Protective Effects against Cadmium Stress in Wolffia arrhiza

Chmur

Bajguz

2023

IJMS

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

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“…Generally, melatonin regulates these processes through the action of the plant hormone network, up/down-regulating several biosynthesis, catabolic, and transcription factors that are plant hormone-related [ 54 , 55 , 56 ]. One of the aspects of greatest agronomic and biotechnological interest is the role of phytomelatonin as a promoter of tolerance against biotic and abiotic stresses [ 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 ] ( Figure 1 ). Currently, phytomelatonin is presented as an interesting eco-friendly tool to control biological diseases and to facilitate the resistance/adaptation of plants to/against climate change.…”

Section: Introductionmentioning

confidence: 99%

Melatonin from Microorganisms, Algae, and Plants as Possible Alternatives to Synthetic Melatonin

Arnao

Giraldo-Acosta²,

Castejón-Castillejo³

et al. 2023

Metabolites

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Melatonin dietary supplements are widely consumed worldwide, with developed countries as the largest consumers, with an estimated annual growth rate of approximately 10% until 2027, mainly in developing countries. The wide use of melatonin against sleep disorders and particular problems, such as jet lag, has been added to other applications, such as anti-aging, anti-stress, immune system activation, anticancer, and others, which have triggered its use, normally without a prescription. The chemical industry currently covers 100% of the needs of the melatonin market. Motivated by sectors with more natural consumption habits, a few years ago, the possibility of obtaining melatonin from plants, called phytomelatonin, arose. More recently, the pharmaceutical industry has developed genetically modified microorganisms whose ability to produce biological melatonin in bioreactors has been enhanced. This paper reviews the aspects of the chemical and biological synthesis of melatonin for human consumption, mainly as dietary supplements. The pros and cons of obtaining melatonin from microorganisms and phytomelatonin from plants and algae are analyzed, as well as the advantages of natural melatonin, avoiding unwanted chemical by-products from the chemical synthesis of melatonin. Finally, the economic and quality aspects of these new products, some of which are already marketed, are analyzed.

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Versatile Roles of Melatonin in Growth and Stress Tolerance in Plants

Cited by 43 publications

References 147 publications

Effects of Melatonin Priming on Suaeda corniculata Seed Germination, Antioxidant Defense, and Reserve Mobilization: Implications for Salinized Wetland Restoration

Effects of Melatonin Priming on Suaeda corniculata Seed Germination, Antioxidant Defense, and Reserve Mobilization: Implications for Salinized Wetland Restoration

Melatonin Involved in Protective Effects against Cadmium Stress in Wolffia arrhiza

Melatonin from Microorganisms, Algae, and Plants as Possible Alternatives to Synthetic Melatonin

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