Melatonin: Role in Increasing Plant Tolerance in Abiotic Stress Conditions

Kul, Raziye; Esringü, Aslıhan; Dadaşoğlu, Esin; Şahin, Üstün; Turan, Metin; Örs, Selda; Ekinci, Melek; Ağar, Güleray; Yıldırım, Ertan

doi:10.5772/intechopen.82590

Cited by 16 publications

(22 citation statements)

References 109 publications

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“…In 2008, the effect of the melatonin-inducing germination of Brassica oleracea L. seeds under copper toxicity opened the door for numerous studies with the objective of demonstrating the protective effect of melatonin [38,39]. This protective effect of melatonin against diverse abiotic (drought, salinity, waterlogging, cold, heat, metal toxics, herbicides, UV radiation) and biotic (bacteria, fungi, virus) stressors has been the most widely studied aspect, featuring in numerous species and experimental situations that were all of high agronomic relevance [40][41][42][43][44][45][46][47][48][49][50][51].…”

Section: Topics Of the First Fifteen Yearsmentioning

confidence: 99%

Is Phytomelatonin a New Plant Hormone?

2020

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Melatonin (N-acetyl-5-methoxytryptamine) is of particular importance as a chronobiological hormone in mammals, acting as a signal of darkness that provides information to the brain and peripheral organs. It is an endogenous synchronizer for both endocrine (i.e., via neurotransmitter release) and other physiological rhythms. In this work we will try to add to the series of scientific events and discoveries made in plants that, surprisingly, confirm the great similarity of action of melatonin in animals and plants. The most relevant milestones on the 25 years of phytomelatonin studies are presented, from its discovery in 1995 to the discovery of its receptor in plants in 2018, suggesting it should be regarded as a new plant hormone.

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Section: Topics Of the First Fifteen Yearsmentioning

confidence: 99%

Is Phytomelatonin a New Plant Hormone?

2020

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“…MET regu¬lates the growth of leaves, shoots and explants, and plays a role in leaf senescence. MET can also regulate plant vegetative growth processes such as rooting, leaf aging, photosyn¬thetic yield, and biomass yield, and it plays a potential regulatory role in flowering processes and the formation and maturation of fruit and seeds [1,26,27]. Lastly, the evidence of the importance of MET in phytoremediation has been increasing [28].…”

Section: Melatonin As An Elicitor Of Plant Stress Responsementioning

confidence: 99%

“…Abiotic or biotic stresses, such as drought, heat, cold, salinity, pathogen attack and high light, either occurring individually or combined, negatively affect plant growth, reproduction and survival, which will limit agricultural crop productivity and yield [1]. Climate change events are predicted to increase the negative impact of environmental stress factors on plant production in many regions of the world in the coming years [2], with the unavoidable question of how humanity will cope with the world's demand for food.…”

Section: Introductionmentioning

confidence: 99%

“…In this sense, molecules such as phytohormones, nitric oxide (NO), hydrogen sulfide, and calcium (Ca2+), are directly involved in the plant's response to environmental stresses [8,9]. Recently, numerous studies have shown that a new and recent plant molecule, melatonin (MET), plays an important role in the response of plants to environmental stress, and its exogenous application has been shown to have a positive effect on the reduction of the impact of stress in plants [1,10], being cataloged as a phytohormone for its functions in plants [11].…”

Section: Introductionmentioning

confidence: 99%

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ROS and NO Regulation by Melatonin Under Abiotic Stress in Plants

Pardo-Hernández¹,

López-Delacalle²

2020

Preprint

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Abiotic stress in plants is an increasingly common problem in agriculture, and thus, studies on plant treatments with specific certain compounds that may help to mitigate these effects have increased in recent years Melatonin (MET) application and its role in mitigating the negative effects of abiotic stress in plants have become important in the last few years. MET, a derivative of tryptophan, is an important plant-related response molecule involved in the growth, development, and reproduction of plants, and the induction of different stress factors. In addition, MET plays a protective role against different abiotic stresses such as salinity, high/low temperature, high light, waterlogging, nutrient deficiency and stress combination by regulating both the enzymatic and non-enzymatic antioxidant defense systems. Also, MET interacts with many signaling molecules, among these, reactive oxygen species (ROS) and nitric oxide (NO), and participates in a wide variety of physiological reactions. It is well known that NO produces S-nitrosylation and NO2-Tyr of important antioxidant-related proteins, being this an important mechanism for maintaining the antioxidant capacity of the AsA/GSH cycle under nitro-oxidative conditions, being extensively reviewed here under different abiotic stress conditions. Lastly, in this review, we show the coordination between NO and MET as a long-range signaling molecule, regulating many responses in plants, including plant growth and abiotic stress tolerance. Despite all the knowledge acquired over the years, there is still more to know about how MET and NO act on tolerance to abiotic stresses.

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“…Biotic stress factors consist of pathogens including viruses, bacteria and fungi, insects, and herbivores [1][2][3]. Abiotic stress factors are drought, temperature, salinity, lack of nutrients, heavy metals and the radiation [4][5][6]. As a consequence of the salt stress; growth and development of the plants are inhibited depending on the osmotic and ion stress [7].…”

Section: Introductionmentioning

confidence: 99%

Investigation on the relationship between salinity stress and epibrassinolide in spinach (Spinacia oleracea L. cv. Matador) seedlings

Saglam¹

2020

Cumhuriyet Science Journal

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Soil salinity is a very important abiotic stress condition that affects plant growth and crop yield. Photosynthetic activity, fresh weight, total protein amount decrease due to salinity condition. Brassinosteroids (BR) are a new group of hormones in the steroidal structure which is involved in the plant hormone group. BRs play an important role in various physiological processes. BR shave a curative effect on the plants exposed to environmental stress. In this study, the effect on seedling development was examined by spraying 24-epibrassinolide (eBL), the active form of brassinosteroids, on the seedlings exposed to salt stress. For this purpose, seedlings are divided into three groups such as Hoagland, Hoagland+NaCl, Hoagland+NaCl+eBL. As a result of preliminary experiments, 150 mM NaCl as the salt concentration reducing seedling growth and 10-9 M eBL which promotes growth by reducing this inhibition were determined as the appropriate concentration. This study; biochemical analysis of spinach seedlings exposed to salt stress and applied to eBL showed the curative effect of eBL on salt toxicity.

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Melatonin: Role in Increasing Plant Tolerance in Abiotic Stress Conditions

Cited by 16 publications

References 109 publications

Is Phytomelatonin a New Plant Hormone?

Is Phytomelatonin a New Plant Hormone?

ROS and NO Regulation by Melatonin Under Abiotic Stress in Plants

Investigation on the relationship between salinity stress and epibrassinolide in spinach (Spinacia oleracea L. cv. Matador) seedlings

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