Melatonin as a Possible Natural Safener in Crops

Giraldo-Acosta, Manuela; Caño, Antonio; Hernández‐Ruíz, Josefa; Arnao, Marino B.

doi:10.3390/plants11070890

Cited by 30 publications

(15 citation statements)

References 77 publications

(84 reference statements)

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“…MEL was also studied as a safener of fungicides in plants. Thus, the application of MEL in co-treatments with the fungicide induced less damage to the plant, and a synergistic effect that increased the effectiveness in pathogen protection, being able to use lower doses of the fungicide ensuring the plant protection (Giraldo-Acosta et al 2022). The present study describes for the first time the safener effect of MEL from a copper-based fungicide and copper oxychloride.…”

Section: Melatonin As a Natural Safenermentioning

confidence: 73%

“…Based on the above data, MEL improves growth both in isolation and in co-treatments with F, slowing down the inhibitory processes caused by F, with less inhibition being observed at higher concentration of MEL in the different treatments with F. In contrast, MEL reduced membrane damage and increased antioxidant activity in leaves and roots, after 10 days of growth in primed mungbean seeds. For all these reasons, we propose a protective (safener) action for MEL such as that produced with synthetic protectors and herbicides (Giraldo-Acosta et al 2022).…”

Section: Melatonin As a Natural Safenermentioning

confidence: 99%

“…This role as a protective agent has been widely studied in many plant species and in multiple stressful situations. Several recent reviews on this topic can be consulted (Moustafa-Farag et al 2020a, c;Pardo-Hernández et al 2020;Sharma et al 2020;Nawaz et al 2020;Ahn et al 2021;Hernández-Ruiz 2021a, 2022;Hoque et al 2021;Tripathi et al 2021;Zhao et al 2021aZhao et al , 2022Giraldo-Acosta et al 2022). Generally, phytomelatonin actions through phytomelatonin receptor (PMTR1), and it appears to activate metabolic, hormonal, and defense responses, providing the plant with greater tolerance against biotic/abiotic stressor (Wei et al 2018a;Wang et al 2021;Yang et al 2021;Li et al 2022).…”

Section: Introductionmentioning

confidence: 99%

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Protective Effect (Safener) of Melatonin on Vigna Radiata L. Seedlings in the Presence of the Fungicide Copper Oxychloride

Giraldo-Acosta

Martínez‐Andújar²,

Martínez-Melgarejo³

et al. 2022

J Plant Growth Regul

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Melatonin (N-acetyl-5-methoxytriptamine) is a novel plant regulatory molecule currently under study. Its role as a biostimulator and protector against abiotic and biotic stressors, through the regulation of the redox network and change in the expression of many elements of primary and secondary metabolism, is of great interest. The possible protective effect of melatonin in mungbean seedlings, previously primed seed treated with the fungicide copper oxychloride, was studied. The effect of melatonin and fungicide in growth of seedlings and photosynthetic pigments, leakage membranes, lipid peroxidation, antioxidant activity, and phytomelatonin content was studied. Also, the effect of exogenous melatonin on endogenous plant hormones indoleacetic acid, gibberellins, cytokinins, abscisic acid, salicylic acid, and jasmonic acid levels, in the absence and presence of fungicide, was analyzed. Melatonin improved growth of roots and aerial parts in the presence of fungicide; chlorophyll and carotenoid contents were protected by melatonin in the presence of melatonin and in melatonin-fungicide co-treatments. Membrane damage due to fungicide was lessened by melatonin. The hormonal profile (auxin, gibberellins, cytokinins, abscisic acid, ethylene precursor, salicylic acid, and jasmonic acid) in roots and leaves was greatly affected by copper fungicide and melatonin treatments. In general, an increasing in plant tolerance response has been detected, proposing melatonin as a natural safener molecule of plants in the presence of copper fungicide.

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Section: Melatonin As a Natural Safenermentioning

confidence: 73%

Section: Melatonin As a Natural Safenermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Protective Effect (Safener) of Melatonin on Vigna Radiata L. Seedlings in the Presence of the Fungicide Copper Oxychloride

Giraldo-Acosta

Martínez‐Andújar²,

Martínez-Melgarejo³

et al. 2022

J Plant Growth Regul

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“…In addition, melatonin considerably increases tolerance to biotic (bacteria, fungi, and viruses) agents and to abiotic stressors, such as water deficit, extreme temperatures, salinity, contaminants, etc. These aspects are of great interest in its application in crops [ 25 , 26 , 27 , 28 , 29 , 30 , 31 ].…”

Section: Introductionmentioning

confidence: 99%

Role of Melatonin and Nitrogen Metabolism in Plants: Implications under Nitrogen-Excess or Nitrogen-Low

Arnao

Hernández‐Ruíz

Caño

2022

IJMS

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Melatonin is a new plant hormone involved in multiple physiological functions in plants such as germination, photosynthesis, plant growth, flowering, fruiting, and senescence, among others. Its protective role in different stress situations, both biotic and abiotic, has been widely demonstrated. Melatonin regulates several routes in primary and secondary plant metabolism through the up/down-regulation of many enzyme/factor genes. Many of the steps of nitrogen metabolism in plants are also regulated by melatonin and are presented in this review. In addition, the ability of melatonin to enhance nitrogen uptake under nitrogen-excess or nitrogen-low conditions is analyzed. A model that summarizes the distribution of nitrogen compounds, and the osmoregulation and redox network responses mediated by melatonin, are presented. The possibilities of using melatonin in crops for more efficient uptake, the assimilation and metabolization of nitrogen from soil, and the implications for Nitrogen Use Efficiency strategies to improve crop yield are also discussed.

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“…Therefore, MT plays a significant role in plants to cope with biotic and abiotic stresses ( Arnao and Hernández-Ruiz, 2015 , 2019 , 2020 ). For example, MT promotes plant growth under harsh environmental conditions such as pollution of harmful elements ( Farouk and Al-Amri, 2019 ; Kaya et al, 2019 , 2022 ; Ahammed et al, 2020 ; Jahan et al, 2020 ; Seleiman et al, 2020 ; Hoque et al, 2021 ; Li S. et al, 2021 ; Bhat et al, 2022 ), heat ( Ahammed et al, 2018 ; Jahan et al, 2019 ), low temperature ( Bajwa et al, 2014 ; Li et al, 2018 ; Zhang et al, 2021 ), salinity ( Liang et al, 2015 ; Qi et al, 2020 ; Siddiqui et al, 2020a ), drought ( Sharma and Zheng, 2019 ; Dai et al, 2020 ; Imran et al, 2021 ), high light ( Ding et al, 2018 ; Lee and Back, 2018 ), ultraviolet radiation ( Yao et al, 2021 ), and herbicides ( Park et al, 2013 ; Giraldo Acosta et al, 2022 ). Therefore, MT is a plant master regulator with great potential for increasing crop yield in agriculture ( Wang et al, 2018 ; Arnao and Hernández-Ruiz, 2019 ; Bose and Howlader, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Exogenous melatonin strongly affects dynamic photosynthesis and enhances water-water cycle in tobacco

et al. 2022

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Melatonin (MT), an important phytohormone synthesized naturally, was recently used to improve plant resistance against abiotic and biotic stresses. However, the effects of exogenous melatonin on photosynthetic performances have not yet been well clarified. We found that spraying of exogenous melatonin (100 μM) to leaves slightly affected the steady state values of CO2 assimilation rate (AN), stomatal conductance (gs) and mesophyll conductance (gm) under high light in tobacco leaves. However, this exogenous melatonin strongly delayed the induction kinetics of gs and gm, leading to the slower induction speed of AN. During photosynthetic induction, AN is mainly limited by biochemistry in the absence of exogenous melatonin, but by CO2 diffusion conductance in the presence of exogenous melatonin. Therefore, exogenous melatonin can aggravate photosynthetic carbon loss during photosynthetic induction and should be used with care for crop plants grown under natural fluctuating light. Within the first 10 min after transition from low to high light, photosynthetic electron transport rates (ETR) for AN and photorespiration were suppressed in the presence of exogenous melatonin. Meanwhile, an important alternative electron sink, namely water-water cycle, was enhanced to dissipate excess light energy. These results indicate that exogenous melatonin upregulates water-water cycle to facilitate photoprotection. Taking together, this study is the first to demonstrate that exogenous melatonin inhibits dynamic photosynthesis and improves photoprotection in higher plants.

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Melatonin as a Possible Natural Safener in Crops

Cited by 30 publications

References 77 publications

Protective Effect (Safener) of Melatonin on Vigna Radiata L. Seedlings in the Presence of the Fungicide Copper Oxychloride

Protective Effect (Safener) of Melatonin on Vigna Radiata L. Seedlings in the Presence of the Fungicide Copper Oxychloride

Role of Melatonin and Nitrogen Metabolism in Plants: Implications under Nitrogen-Excess or Nitrogen-Low

Exogenous melatonin strongly affects dynamic photosynthesis and enhances water-water cycle in tobacco

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