Melatonin-Induced Water Stress Tolerance in Plants: Recent Advances

Antioxidants, Journal Year: 2020, Volume and Issue: 9(9), P. 809 - 809

Published: Sept. 1, 2020

Water stress (drought and waterlogging) is severe abiotic to plant growth development. Melatonin, a bioactive hormone, has been widely tested in drought situations diverse species, while few studies on the role of melatonin waterlogging conditions have published. In current review, we analyze biostimulatory functions plants under both stresses. Melatonin controls levels reactive oxygen nitrogen species positively changes molecular defense improve tolerance against water stress. Moreover, crosstalk other phytohormones key element survival stress, this relationship needs further investigation draw complete story sides-drought waterlogging-through discussing previous critical conditions. suggest several research directions, especially for waterlogging, which remains big vague piece puzzle.

Language: Английский

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Worldwide melatonin research: a bibliometric analysis of the published literature between 2015 and 2019

Chronobiology International, Journal Year: 2020, Volume and Issue: 38(1), P. 27 - 37

Published: Nov. 8, 2020

This study presents a bibliometric analysis of the publications on melatonin research from Scopus database during period 2015–2019. Based keywords used, which are related to in article title, retrieved 4411 documents for further using various tools. We used Microsoft Excel conduct frequency analysis, VOSviewer data visualization, and Harzing's Publish or Perish citation metrics analysis. reports results standard indicators such as growth publications, authorship patterns, collaboration, prolific authors, country contribution, most active institutions, preferred journals, top-cited articles. our findings, there is continuous 5 years since 2015. China was largest contributor research, followed by United States. The Journal Pineal Research published number research. Our findings suggest that role plant food sciences, well cancer, may later take over clusters earlier dominated

Language: Английский

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ROS and NO Regulation by Melatonin Under Abiotic Stress in Plants

Antioxidants, Journal Year: 2020, Volume and Issue: 9(11), P. 1078 - 1078

Published: Nov. 3, 2020

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

Language: Английский

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The Crosstalk of Melatonin and Hydrogen Sulfide Determines Photosynthetic Performance by Regulation of Carbohydrate Metabolism in Wheat under Heat Stress

Plants, Journal Year: 2021, Volume and Issue: 10(9), P. 1778 - 1778

Published: Aug. 26, 2021

Photosynthesis is a pivotal process that determines the synthesis of carbohydrates required for sustaining growth under normal or stress situation. Stress exposure reduces photosynthetic potential owing to excess reactive oxygen species disturb proper functioning apparatus. This decreased photosynthesis associated with disturbances in carbohydrate metabolism resulting reduced stress. We evaluated importance melatonin reducing heat stress-induced severity wheat (Triticum aestivum L.) plants. The plants were subjected 25 °C (optimum temperature) 40 (heat stress) 15 days at 6 h time duration and then developed 30 days. Heat led oxidative increased production thiobarbituric acid substances (TBARS) hydrogen peroxide (H2O2) content accrual total soluble sugars, starch enzymes which reflected photosynthesis. Application not only through lowering TBARS H2O2 content, augmenting activity antioxidative but also plant was needed provide energy carbon skeleton developing However, increase these parameters mediated via sulfide (H2S), as inhibition H2S by hypotaurine (HT; scavenger) reversed ameliorative effect melatonin. suggests crosstalk protecting regulation metabolism.

Language: Английский

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Daily rhythms of phytomelatonin signaling modulate diurnal stomatal closure via regulating reactive oxygen species dynamics in Arabidopsis

Journal of Pineal Research, Journal Year: 2020, Volume and Issue: 68(3)

Published: Feb. 17, 2020

Abstract Melatonin is a well‐studied neurohormone oscillating in 24‐h cycle vertebrates. Phytomelatonin widespread plant kingdom, but it remains elusive whether this newly characterized putative hormone underlies the regulation by daily rhythms. Here, we report phytomelatonin signaling, as reflected changes endogenous concentrations of and expression genes associated with biosynthesis ( AtSNAT1 , AtCOMT1, AtASMT ) its receptor AtPMTR1 ), shows oscillations Arabidopsis . The variation reactive oxygen species (ROS) production scavenging ROS‐related significantly decrease pmtr1 snat increase PMTR1 ‐OE seedlings, indicating rhythmicity signaling required for maintenance ROS dynamics. Additionally, feedback influences AtCOMT1 AtASMT, suggesting are coordinately interrelated. mutant plants lose diurnal stomatal closure, stomata remaining open during daytime well nighttime mutants showing more water loss drought sensitivity when compared wild‐type Col‐0 plants. Taken together, our results suggest that PMTR1‐regulated peaks afternoon may transmit darkness signals to trigger which might be essential high water‐use efficiency tolerance.

Language: Английский

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Melatonin promotes Arabidopsis primary root growth in an IAA-dependent manner

Journal of Experimental Botany, Journal Year: 2021, Volume and Issue: 72(15), P. 5599 - 5611

Published: April 28, 2021

Abstract Melatonin has been characterized as a growth regulator in plants. shares tryptophan the precursor with auxin indole-3-acetic acid (IAA), but interplay between melatonin and IAA remains controversial. In this study, we aimed to dissect relationship regulating Arabidopsis primary root growth. We observed that concentrations ranging from 10–9 10–6 M functioned mimics promote wild type, well pin-formed (pin) single double mutants. Transcriptome analysis showed changes gene expression after treatment were moderately correlated. Most of IAA-regulated genes co-regulated by melatonin, indicating regulated similar subset genes. partially rescued defects pin mutant However, had little effect on presence high biosynthesis inhibitors, or polar transport inhibitor, could not rescue length defect quintuple yucQ. Therefore, propose promotes an IAA-dependent manner.

Language: Английский

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Melatonin Improves Cotton Salt Tolerance by Regulating ROS Scavenging System and Ca2 + Signal Transduction

Frontiers in Plant Science, Journal Year: 2021, Volume and Issue: 12

Published: June 28, 2021

As one of the cash crops, cotton is facing threat abiotic stress during its growth and development. It has been reported that melatonin involved in plant defense against salt stress, but whether can improve tolerance molecular mechanism remain unclear. We investigated role by silencing synthesis gene exogenous application upland cotton. In this study, applicating seedlings. The content endogenous was different varieties with tolerance. inhibition biosynthesis related genes resulted decrease antioxidant enzyme activity, Ca 2+ To explore protective RNA-seq analysis. Melatonin played an important resistance to improved regulating enzymes, transcription factors, hormones, signal molecules transduction. This study proposed a regulatory network for regulate cotton’s response which provided theoretical basis improving

Language: Английский

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Melatonin effects in enhancing chilling stress tolerance of pepper

Scientia Horticulturae, Journal Year: 2021, Volume and Issue: 289, P. 110434 - 110434

Published: July 28, 2021

Language: Английский

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Mixed red and blue light promotes ripening and improves quality of tomato fruit by influencing melatonin content

Environmental and Experimental Botany, Journal Year: 2021, Volume and Issue: 185, P. 104407 - 104407

Published: Feb. 5, 2021

Language: Английский

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Melatonin biosynthesis and signal transduction in plants in response to environmental conditions

Journal of Experimental Botany, Journal Year: 2022, Volume and Issue: 73(17), P. 5818 - 5827

Published: May 5, 2022

Abstract Melatonin, the most widely distributed hormone in nature, plays important roles plants. Many physiological processes plants are linked to melatonin, including seed germination, anisotropic cell growth, and senescence. Compared with animals, different possess diverse melatonin biosynthetic pathways regulatory networks. Whereas biosynthesis animals is known be regulated by ambient signals, little about how responds environmental signals. Plants affected numerous factors, such as light, temperature, moisture, carbon dioxide, soil conditions, nutrient availability at all stages of development tissues. Melatonin content exhibits dynamic changes that affect plant growth development. various species-specific responses conditions. However, much remains learned, not factors have been studied, mechanisms which these influence biosynthesis. In this review, we provide a detailed, systematic description signaling providing reference for in-depth research on issue.

Language: Английский

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