Exogenous melatonin mitigates boron toxicity in wheat

Al-Huqail, Asma A.; Khan, Md. Raisuddin; Ali, Hayssam M.; Siddiqui, Manzer H.; AL-Huqail, Arwa Abdulkreem; Alzuaibr, Fahad Mohammed; Al-Muwayhi, Mohammed Abdul Rahman; Marraiki, Najat; Al-Humaid, Latifah

doi:10.1016/j.ecoenv.2020.110822

Cited by 58 publications

(44 citation statements)

References 75 publications

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“…Melatonin plays crucial roles in many physiological and biochemical processes, such as antioxidative functions, regulation of photoperiod, protection of chlorophylls (Chls), metabolism of other hormones, seed germination, root development, stomatal conductance, senescence, and osmoregulation (Ahmad et al, 2019; Debnath et al, 2019; Hossain et al, 2020; Li et al, 2014; Wang et al, 2017). Application of exogenous melatonin has proven promising in the management of various environmental stresses, including salinity (Zahedi et al, 2020), drought (Bidabadi et al, 2020), and metal toxicity (Al‐Huqail et al, 2020). Recent investigations also demonstrated that melatonin can be employed as a novel tool in reducing the detrimental consequences of drought in many plant species, especially in cash crops like medicinal plants (Bidabadi et al, 2020; Sadak et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Melatonin alleviates drought impact on growth and essential oil yield of lemon verbena by enhancing antioxidant responses, mineral balance, and abscisic acid content

Hosseini

Samsampour

Zahedi

et al. 2021

Physiologia Plantarum

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Melatonin has recently emerged as a multifunctional biomolecule with promising aspects in plant stress tolerance. The present study examined the effects of foliar-sprayed melatonin (0, 100, and 200 μM) on growth and essential oil yield attributes of lemon verbena (Lippia citriodora) under water-shortage (mild, moderate and severe). Results revealed that melatonin minimized drought effects on lemon verbena, resulting in improved growth and essential oils yield. Drought impositions gradually and significantly reduced several growth parameters, such as plant height and biomass, whereas melatonin application revived the growth performance of lemon verbena. Melatonin protected the photosynthetic pigments and helped maintain the mineral balance at all levels of drought. Melatonin stimulated the accumulation of proline, soluble sugars and abscisic acid, which were positively correlated with a better preservation of leaf water status in drought-stressed plants. Melatonin also prevented oxidative damages by enhancing the superoxide dismutase, ascorbate peroxidase and catalase activities. Furthermore, increased levels of total phenolic compounds, chicoric acid, caffeic acid and chlorogenic acid, as well as ascorbate and total antioxidant capacity in melatonin-sprayed drought-stressed plants indicated that melatonin helped verbena plants to sustain antioxidant and medicinal properties during drought. Finally, melatonin treatments upheld the concentrations and yield of essential oils in the leaves of lemon verbena regardless of drought severities.These results provided new insights into melatonin-mediated drought tolerance in lemon verbena, and this strategy could be implemented for the successful cultivation of lemon verbena, and perhaps other medicinal plants, in drought-prone areas worldwide.

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Section: Introductionmentioning

confidence: 99%

Melatonin alleviates drought impact on growth and essential oil yield of lemon verbena by enhancing antioxidant responses, mineral balance, and abscisic acid content

Hosseini

Samsampour

Zahedi

et al. 2021

Physiologia Plantarum

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“…These toxicities also induce a common oxidative burst in plants which causes an imbalance in the production and scavenging of ROS, which reduces photosynthesis and induces stomatal closure, alters the activities of many enzymes and lastly, produces cell damage and death. All of these effects have been shown to appear at high concentrations of Pb [ 25 ], Cd [ 26 ], Cu [ 27 , 28 ], Zn [ 29 ], B [ 30 , 31 ], Al [ 32 , 33 , 34 ], V [ 35 ], Ni [ 36 , 37 , 38 ], As [ 39 , 40 , 41 ], and Cr [ 42 ] in the growth media of the plants.…”

Section: Effects Of Metal Toxicity In Plantsmentioning

confidence: 99%

ROS and NO Phytomelatonin-Induced Signaling Mechanisms under Metal Toxicity in Plants: A Review

et al. 2021

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Metal toxicity in soils, along with water runoff, are increasing environmental problems that affect agriculture directly and, in turn, human health. In light of finding a suitable and urgent solution, research on plant treatments with specific compounds that can help mitigate these effects has increased, and thus the exogenous application of melatonin (MET) and its role in alleviating the negative effects of metal toxicity in plants, have become more important in the last few years. MET is an important plant-related response molecule involved in growth, development, and reproduction, and in the induction of different stress-related key factors in plants. It has been shown that MET plays a protective role against the toxic effects induced by different metals (Pb, Cd, Cu, Zn, B, Al, V, Ni, La, As, and Cr) by regulating both the enzymatic and non-enzymatic antioxidant plant defense systems. In addition, MET interacts with many other signaling molecules, such as reactive oxygen species (ROS) and nitric oxide (NO) and participates in a wide variety of physiological reactions. Furthermore, MET treatment enhances osmoregulation and photosynthetic efficiency, and increases the concentration of other important antioxidants such as phenolic compounds, flavonoids, polyamines (PAs), and carotenoid compounds. Some recent studies have shown that MET appeared to be involved in the regulation of metal transport in plants, and lastly, various studies have confirmed that MET significantly upregulated stress tolerance-related genes. Despite all the knowledge acquired over the years, there is still more to know about how MET is involved in the metal toxicity tolerance of plants.

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“…These toxicities also induce a common oxidative burst in plants which cause an imbalance in the production and scavenging of ROS, which reduces photosynthesis and induces stomatal closure, alters the activities of many enzymes and lastly, produces cell damage and death. All of these effects have been shown to appear at high concentrations of Pb [25], Cd [26], Cu [27,28], Zn [29], B [30,31], Al [32][33][34], V [35], Ni [36][37][38], As [39][40][41], and Cr [42] in the growth media of the plants.…”

Section: Effects Of Metal Toxicity In Plantsmentioning

confidence: 99%

“…Other non-enzymatic antioxidant molecules which have been shown to increase their concentration after an exogenous application of MET are phenolic compounds, flavonoids, and carotenoid compounds via the NO-dependent pathway [30,44,79,90,91]. The application of MET in wheat (Triticum aestivum) under high levels of B significantly reveresed the adverse effects of B toxicity and alleviated the cellular oxidative damage through enhanced ROS scavenging, by the induction of some important antioxidant enzymes, the increase in AsA and GSH content, and the content of phenolic compounds [30]. Also, in pepper plants (Capsicum annuum) grown under B toxicity, an exogenous application of MET reversed the toxic effect of B by moderating B accumulation and increasing carbohydrate, carotenoid, and flavonoid contents in leaves and fruits, with the concomitant increase in photosynthetic activity and plant growth [90].…”

Section: Ros-related Met Induced Stress Response In Plantsmentioning

confidence: 99%

“…Pers.) [128] maize (Z. mays L.) [120] Ulva (green macroalga) [141] Cd mallow (Malva parviflora, Malvaceae) [49] Spinacia oleracea L. [142] strawberries (Fragaria × ananassa) [81] alfalfa [130] tomato [131][132][133] wheat [124,134] Cyphomandra betacea [135] Malachium aquaticum [136] Galinsoga parviflora [136] Perilla frutescens [137] rice [138,139] Ulva [140,141] rapeseed (Brassica napus) [48] cucumber (Cucumis sativus L.) [95] Cu cucumber (Cucumis sativus L.) [100] melon (Cucumis melo L.) [45] Zn Ulva (green macroalga) [141] wheat (Triticum aestivum L.) [143] safflower (Carthamus tinctorius L.) [53] Al soybean (Glycine max L.) [148] wheat [149] rapeseed (Brassica napus) [48] V watermelon (Citrullus lanatus) [50] Ni tomato (S. lycopersicum L.) [144] Cr wheat (Triticum aestivum L.) [145] canola (Brassica napus L.) [147] B wheat (Triticum aestivum ) [30] As rosemary (Rosmarinus officinalis L.) [150] rice (Oryza sativa L.) [41,51] AsA-GSH cycle Pb bermudagrass (Cynodon dactylon L.) [128] maize (Z. mays L.) [120] Ulva (green macroalga)…”

Section: Plant Specie Referencesmentioning

confidence: 99%

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ROS and NO Phytomelatonin-Induced Signaling Mechanisms Under Metal Toxicity in Plants: A Review

Pardo-Hernández¹,

López-Delacalle²,

Marti-Guillen³

et al. 2021

Preprint

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Metal toxicity in soils, along with water runoff, are increasing environmental problems that affect agriculture directly and, in turn, human health. In light of finding a suitable and urgent solution, research on plant treatments with specific compounds that can help mitigate these effects has increased, and thus the exogenous application of melatonin (MET) and its role in alleviating the negative effects of metal toxicity in plants, have become more important in the last few years. MET is an important plant-related response molecule involved in growth, development, and reproduction, and in the induction of different stress-related key factors in plants. It has been shown that MET plays a protective role against the toxic effects induced by different metals (Pb, Cd, Cu, Zn, B, Al, V, Ni, La, As, and Cr) by regulating both the enzymatic and non-enzymatic antioxidant plant defense systems. In addition, MET interacts with many other signaling molecules, such as reactive oxygen species (ROS) and nitric oxide (NO), and participates in a wide variety of physiological reactions. Furthermore, MET treatment enhances osmoregulation and photosynthetic efficiency and increases the concentration of other important antioxidants such as phenolic compounds, flavonoids, polyamines (PAs), and carotenoid compounds. Some recent studies have shown that MET appeared to be involved in the regulation of metal transport in plants, and lastly, various studies have confirmed that MET significantly upregulated stress tolerance-related genes. Despite all the knowledge acquired over the years, there is still more to know about how MET is involved in the metal toxicity tolerance of plants.

show abstract

Exogenous melatonin mitigates boron toxicity in wheat

Cited by 58 publications

References 75 publications

Melatonin alleviates drought impact on growth and essential oil yield of lemon verbena by enhancing antioxidant responses, mineral balance, and abscisic acid content

Melatonin alleviates drought impact on growth and essential oil yield of lemon verbena by enhancing antioxidant responses, mineral balance, and abscisic acid content

ROS and NO Phytomelatonin-Induced Signaling Mechanisms under Metal Toxicity in Plants: A Review

ROS and NO Phytomelatonin-Induced Signaling Mechanisms Under Metal Toxicity in Plants: A Review

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