Salinity induced physiological and biochemical changes in plants: An omic approach towards salt stress tolerance

Plant Physiology and Biochemistry, Год журнала: 2020, Номер 156, С. 64 - 77

Опубликована: Авг. 29, 2020

Язык: Английский

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Tolerance to Stress Combination in Tomato Plants: New Insights in the Protective Role of Melatonin

Molecules, Год журнала: 2018, Номер 23(3), С. 535 - 535

Опубликована: Фев. 28, 2018

Abiotic stresses such as drought, heat or salinity are major causes of yield loss worldwide. Recent studies have revealed that the acclimation plants to a combination different environmental is unique and therefore cannot be directly deduced from studying response each applied individually. The efficient detoxification reactive oxygen species (ROS) thought play key role in enhancing tolerance abiotic stresses. Here, we report on melatonin protection photosynthetic apparatus through increase ROS tomato grown under heat, two most common known act jointly. Plants treated with exogenous showed modulation expression some antioxidant-related genes their related enzymes. More specifically, ascorbate peroxidase, glutathione reductase, peroxidase phospholipid hydroperoxide (APX, GR, GPX Ph-GPX, resepctively) an antagonistic regulation compared did not receive melatonin. This translated into better antioxidant capacity lesser accumulation stress combination. performance photosynthesis parameters photosystems was also increased heat. In accordance these findings, were found grow non-treated ones. Our study highlights important plays stresses, how this compound can specifically regulate oxidative stress-related enzymes plant tolerance.

Язык: Английский

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Mechanisms Regulating the Dynamics of Photosynthesis Under Abiotic Stresses

Frontiers in Plant Science, Год журнала: 2021, Номер 11

Опубликована: Янв. 28, 2021

Photosynthesis sustains plant life on earth and is indispensable for growth development. Factors such as unfavorable environmental conditions, stress regulatory networks, biochemical processes limits the photosynthetic efficiency of plants thereby threaten food security worldwide. Although numerous physiological approaches have been used to assess performance key components their responses, though, these are not extensive enough do favor strategic improvement photosynthesis under abiotic stresses. The decline in capacity due stresses directly associated with reduction yield. Therefore, a detailed information responses better understanding machinery could help developing new crop higher yield even stressed environments. Interestingly, cracking signaling metabolic pathways, identification some elements, characterization potential genes, phytohormone factors advanced our knowledge related photosynthesis. However, dynamic modulation dramatically fluctuating natural environments remains limited. Here, we provide overview research conducted date, highlight (heat, salinity, drought, high light, heavy metal) that limit machinery. Further, reviewed role transcription factor genes various enzymes involved process Finally, discussed recent progress field biodegradable compounds, chitosan humic acid, effect melatonin (bio-stimulant) activity. Based gathered researched data set, logical concept regulation along strategies will expand surely accelerate development tolerance mechanisms, wider adaptability, survival rate, species.

Язык: Английский

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Phytomelatonin: a universal abiotic stress regulator

Journal of Experimental Botany, Год журнала: 2017, Номер 69(5), С. 963 - 974

Опубликована: Дек. 19, 2017

Melatonin, a derivative of tryptophan, was first detected in plant species 1995 and it has been shown to be diverse regulator during growth development, stress responses. Recently, great progress made towards determining the detailed functions melatonin responses abiotic stress. Melatonin priming improves tolerance cold, heat, salt, drought stresses through regulation genes involved DREB/CBF, HSF, SOS, ABA pathways, respectively. As scavenger free radicals, also directly detoxifies reactive oxygen species, thus alleviating membrane oxidation. Abiotic stress-inhibited photosynthesis is partially recovered metabolites accumulate presence melatonin, leading improved growth, delayed leaf senescence, increased tolerance. In this review, we summarize interactions with phytohormones regulate downstream gene expression, protein stabilization, epigenetic modification plants. Finally, consider need for, approaches to, identification receptors components signaling transduction pathways.

Язык: Английский

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Integrative roles of nitric oxide and hydrogen sulfide in melatonin‐induced tolerance of pepper (Capsicum annuum L.) plants to iron deficiency and salt stress alone or in combination

Physiologia Plantarum, Год журнала: 2019, Номер 168(2), С. 256 - 277

Опубликована: Апрель 13, 2019

There seems to be no report in the literature on effect of melatonin (MT) relieving detrimental effects combined application salt stress (SS) and iron deficiency (ID). Therefore, MT accumulation/synthesis endogenous nitric oxide (NO) hydrogen sulphide (H2 S) how far these molecules are involved MT-improved tolerance ID SS pepper (Capsicum annuum L) were tested. Hence, two individual trials set up. The treatments first experiment comprised: Control, (0.1 mM FeSO4 ), (100 NaCl) + SS. stresses more prominent than those by either single stress, with respect growth, oxidative antioxidant defense attributes. Single or both combination improved H2 S NO, foliar-applied µM) led a further increase NO levels. In second experiment, 0.1 scavenger 2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide potassium (cPTIO) that S, hypotuarine (HT) applied along get evidence whether MT-induced cPTIO HT under showed was reversed scavenger, cPTIO, alone but inhibited scavengers. These findings suggested induced may downstream signal crosstalk between S.

Язык: Английский

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Melatonin increased maize (Zea mays L.) seedling drought tolerance by alleviating drought-induced photosynthetic inhibition and oxidative damage

Acta Physiologiae Plantarum, Год журнала: 2016, Номер 38(2)

Опубликована: Янв. 29, 2016

Язык: Английский

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Melatonin and Its Effects on Plant Systems

Molecules, Год журнала: 2018, Номер 23(9), С. 2352 - 2352

Опубликована: Сен. 14, 2018

Melatonin (N-acetyl-5-methoxytryptamine) is a nontoxic biological molecule produced in pineal gland of animals and different tissues plants. It an important secondary messenger molecule, playing vital role coping with various abiotic biotic stresses. serves as antioxidant postharvest technology enhances the life fruits vegetables. The application exogenous melatonin alleviated reactive oxygen species cell damage induced by stresses means repairing mitochondria. Additionally, regulation stress-specific genes activation pathogenesis-related protein enzymes under stress makes it more versatile molecule. Besides that, crosstalk other phytohormones inroads to utilize against non-testified conditions, such viruses nematodes. Furthermore, strategies have been discussed induce endogenous activity order sustain plant system. Our review highlighted diverse roles system, which could be useful enhancing environmental friendly crop production ensure food safety.

Язык: Английский

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Melatonin Mediates Enhancement of Stress Tolerance in Plants

International Journal of Molecular Sciences, Год журнала: 2019, Номер 20(5), С. 1040 - 1040

Опубликована: Фев. 27, 2019

Melatonin is a multifunctional signaling molecule, ubiquitously distributed in different parts of plants and responsible for stimulating several physiological responses to adverse environmental conditions. In the current review, we showed that biosynthesis melatonin occurred by themselves, accumulation fluctuated sharply modulating its metabolic pathways under stress Melatonin, with precursors derivatives, acted as powerful growth regulator, bio-stimulator, antioxidant, which delayed leaf senescence, lessened photosynthesis inhibition, improved redox homeostasis antioxidant system through direct scavenging reactive oxygen species (ROS) nitrogen (RNS) abiotic biotic addition, exogenous boosted growth, photosynthetic, activities plants, confirming their tolerances against drought, unfavorable temperatures, salinity, heavy metals, acid rain, pathogens. However, future research, together recent advancements, would support emerging new approaches adopt strategies overcoming effect hazardous environments on crops may have potential implications expanding crop cultivation harsh Thus, farming communities consumers will benefit from elucidating food safety concerns.

Язык: Английский

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Mechanistic insights on melatonin‐mediated drought stress mitigation in plants

Physiologia Plantarum, Год журнала: 2020, Номер 172(2), С. 1212 - 1226

Опубликована: Дек. 11, 2020

Abstract Drought stress imposes a serious threat to crop productivity and nutritional security. adaptation mechanisms involve complex regulatory network comprising of various sensory signaling molecules. In this context, melatonin has emerged as potential molecule playing crucial role in imparting tolerance plants. Melatonin pretreatment regulates plant physiological processes such osmoregulation, germination, photosynthesis, senescence, primary/secondary metabolism, hormonal cross‐talk under water deficit conditions. Melatonin‐mediated regulation ascorbate‐glutathione (AsA–GSH) cycle plays scavenge reactive oxygen species generated the cells during drought. Here, review, current knowledge on ameliorate adverse effects drought by modulating morphological, physiological, redox is discussed. The improve absorption capacity roots regulating aquaporin channels involved mitigation are also Overall, versatile bio‐molecule growth promotion yield enhancement that makes it suitable candidate for eco‐friendly production ensure food

Язык: Английский

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Exogenous Melatonin Enhances Cold, Salt and Drought Stress Tolerance by Improving Antioxidant Defense in Tea Plant (Camellia sinensis (L.) O. Kuntze)

Molecules, Год журнала: 2019, Номер 24(9), С. 1826 - 1826

Опубликована: Май 12, 2019

Melatonin is a biological hormone that plays crucial roles in stress tolerance. In this study, we investigated the effect of exogenous melatonin on abiotic tea plant. Under cold, salt and drought stress, increasing malondialdehyde levels decreasing maximum photochemical efficiency PSII were observed leaves. Meanwhile, reactive oxygen species (ROS) increased significantly under stress. Interestingly, pretreatment with leaves alleviated ROS burst, decreased maintain high photosynthetic efficiency. Moreover, 100 μM melatonin-pretreated plants showed glutathione ascorbic acid activities superoxide dismutase, peroxidase, catalase ascorbate peroxidase Notably, treatments can positively up-regulate genes (CsSOD, CsPOD, CsCAT CsAPX) expression antioxidant enzyme biosynthesis. Taken together, our results confirmed protects against stress-induced damages through detoxifying regulating systems.

Язык: Английский

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