Plants’ Physio-Biochemical and Phyto-Hormonal Responses to Alleviate the Adverse Effects of Drought Stress: A Comprehensive Review

Plants, Journal Year: 2022, Volume and Issue: 11(13), P. 1620 - 1620

Published: June 21, 2022

Water, a necessary component of cell protoplasm, plays an essential role in supporting life on Earth; nevertheless, extreme changes climatic conditions limit water availability, causing numerous issues, such as the current water-scarce regimes many regions biome. This review aims to collect data from various published studies literature understand and critically analyze plants’ morphological, growth, yield, physio-biochemical responses drought stress their potential modulate nullify damaging effects via activating natural physiological biochemical mechanisms. In addition, described breakthroughs understanding how plant hormones influence phytohormonal interaction through signaling under regimes. The information for this was systematically gathered different global search engines scientific databases Science Direct, including Google Scholar, Web Science, related studies, books, articles. Drought is significant obstacle meeting food demand world’s constantly growing population. Plants cope with cellular osmotic potential, activation defense systems form antioxidant enzymes accumulation osmolytes proteins, proline, glycine betaine, phenolic compounds, soluble sugars. Phytohormones developmental processes networks, which aid acclimating plants biotic abiotic challenges and, consequently, survival. Significant progress has been made jasmonates, salicylic acid, ethylene identifying important components roles stress. Other hormones, abscisic auxin, gibberellic brassinosteroids, peptide have linked pathways ways.

Language: Английский

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Melatonin Improves Drought Stress Tolerance of Tomato by Modulating Plant Growth, Root Architecture, Photosynthesis, and Antioxidant Defense System

Antioxidants, Journal Year: 2022, Volume and Issue: 11(2), P. 309 - 309

Published: Feb. 3, 2022

Tomato is an important vegetable that highly sensitive to drought (DR) stress which impairs the development of tomato seedlings. Recently, melatonin (ME) has emerged as a nontoxic, regulatory biomolecule regulates plant growth and enhances DR tolerance mechanism in plants. The present study was conducted examine defensive role ME photosynthesis, root architecture, antioxidant enzymes' activities seedlings subjected stress. Our results indicated strongly suppressed biomass production, inhibited negatively affected morphology, reduced photosynthetic pigments Per contra, soluble sugars, proline, ROS (reactive oxygen species) were suggested be improved under Conversely, (100 µM) pretreatment detrimental-effect by restoring chlorophyll content, gas exchange parameters attributes compared with DR-group only. Moreover, supplementation also mitigated enzymes [APX (ascorbate peroxidase), CAT (catalase), DHAR (dehydroascorbate reductase), GST (glutathione S-transferase), GR MDHAR (monodehydroascorbate POD (peroxidase), SOD (superoxide dismutase)], non-enzymatic [AsA (ascorbate), DHA (dehydroascorbic acid), GSH (glutathione), GSSG, (oxidized glutathione)] activities, oxidative damage [EL (electrolyte leakage), H2O2 (hydrogen peroxide), MDA (malondialdehyde), O2•- ion)] osmoregulation (soluble sugars proline) seedlings, regulating gene expression for SOD, CAT, APX, GR, POD, GST, DHAR, MDHAR. These findings determine could efficiently improve growth, characteristics, leaf photosynthesis machinery thereby increasing seedlings' adaptability

Language: Английский

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Salinity Stress in Potato: Understanding Physiological, Biochemical and Molecular Responses

Life, Journal Year: 2021, Volume and Issue: 11(6), P. 545 - 545

Published: June 10, 2021

Among abiotic stresses, salinity is a major global threat to agriculture, causing severe damage crop production and productivity. Potato (Solanum tuberosum) regarded as future food by FAO ensure security, which severely affected salinity. The growth of the potato plant inhibited under salt stress due osmotic stress-induced ion toxicity. Salinity-mediated leads physiological changes in plant, including nutrient imbalance, impairment detoxifying reactive oxygen species (ROS), membrane damage, reduced photosynthetic activities. Several biochemical phenomena, such maintenance water status, transpiration, respiration, use efficiency, hormonal balance, leaf area, germination, antioxidants are adversely affected. ROS increased plasma permeability extravasations substances, causes imbalance plasmolysis. However, plants cope with mediated oxidative conditions enhancing both enzymatic non-enzymatic antioxidant osmoprotectants, proline, polyols (sorbitol, mannitol, xylitol, lactitol, maltitol), quaternary ammonium compound (glycine betaine) synthesized overcome adverse effect response tolerance include complex multifaceted mechanisms that controlled multiple proteins their interactions. This review aims redraw attention researchers explore current physiological, molecular responses subsequently develop potential mitigation strategies against potatoes.

Language: Английский

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Melatonin enhanced the heavy metal-stress tolerance of pepper by mitigating the oxidative damage and reducing the heavy metal accumulation

Journal of Hazardous Materials, Journal Year: 2023, Volume and Issue: 454, P. 131468 - 131468

Published: April 23, 2023

Language: Английский

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Phytomelatonin: an unexpected molecule with amazing performances in plants

Journal of Experimental Botany, Journal Year: 2022, Volume and Issue: 73(17), P. 5779 - 5800

Published: Jan. 12, 2022

Phytomelatonin, a multifunctional molecule that has been found to be present in all plants examined date, an important role as modulatory agent (a biostimulator) improves plant tolerance both biotic and abiotic stress. We review of phytomelatonin considers its roles metabolism particular interactions with hormone network. In the primary plants, melatonin rate efficiency photosynthesis, well related factors such stomatal conductance, intercellular CO2, Rubisco activity. It also shown down-regulate some senescence transcription factors. Melatonin up-regulates many enzyme transcripts carbohydrates (including sucrose starch), amino acids, lipid metabolism, optimizing N, P, S uptake. With respect secondary clear increases polyphenol, glucosinolate, terpenoid, alkaloid contents have described numerous melatonin-treated plants. Generally, most genes these biosynthesis pathways up-regulated by melatonin. The great regulatory capacity is result control redox networks. acts master regulator, up-/down-regulating different levels signalling, key player homeostasis. counteract diverse critical situations pathogen infections stresses, provide varying degrees tolerance. propose possible future applications for crop improvement post-harvest product preservation.

Language: Английский

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Impacts, Tolerance, Adaptation, and Mitigation of Heat Stress on Wheat under Changing Climates

International Journal of Molecular Sciences, Journal Year: 2022, Volume and Issue: 23(5), P. 2838 - 2838

Published: March 4, 2022

Heat stress (HS) is one of the major abiotic stresses affecting production and quality wheat. Rising temperatures are particularly threatening to wheat production. A detailed overview morpho-physio-biochemical responses HS critical identify various tolerance mechanisms their use in identifying strategies safeguard under changing climates. The development thermotolerant cultivars using conventional or molecular breeding transgenic approaches promising. Over last decade, different omics have revolutionized way plant breeders biotechnologists investigate underlying cellular homeostasis. Therefore, developing genomics, transcriptomics, proteomics, metabolomics data sets a deeper understanding needed. most reliable method improve resilience must include agronomic management strategies, such as adoption climate-smart cultivation practices osmoprotectants cultured soil microbes. However, looking at complex nature HS, holistic approach integrating outcomes breeding, physiological, agronomical, biotechnological options required. Our review aims provide insights concerning morpho-physiological impacts, mechanisms, adaptation This will help scientific communities identification, development, promotion minimize negative impacts HS.

Language: Английский

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Melatonin-Mediated Abiotic Stress Tolerance in Plants

Frontiers in Plant Science, Journal Year: 2022, Volume and Issue: 13

Published: May 9, 2022

Melatonin is a multi-functional molecule that ubiquitous in all living organisms. performs essential roles plant stress tolerance; its application can reduce the harmful effects of abiotic stresses. Plant melatonin biosynthesis, which usually occurs within chloroplasts, and related metabolic pathways have been extensively characterized. regulates responses by directly inhibiting accumulation reactive oxygen nitrogen species, indirectly affecting response pathways. In this review, we summarize recent research concerning metabolism, antioxidation; focus on melatonin-mediated tolerance to stresses including drought, waterlogging, salt, heat, cold, heavy metal toxicity, light others. We also examine exogenous treatment plants under stress. Finally, discuss future perspectives applications plants.

Language: Английский

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Molecular Insights into the Role of Reactive Oxygen, Nitrogen and Sulphur Species in Conferring Salinity Stress Tolerance in Plants

Journal of Plant Growth Regulation, Journal Year: 2022, Volume and Issue: 42(2), P. 554 - 574

Published: Feb. 10, 2022

Language: Английский

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Salinity responses and tolerance mechanisms in underground vegetable crops: an integrative review

Planta, Journal Year: 2022, Volume and Issue: 255(3)

Published: Feb. 15, 2022

Language: Английский

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Melatonin: First-line soldier in tomato under abiotic stress current and future perspective

Plant Physiology and Biochemistry, Journal Year: 2022, Volume and Issue: 185, P. 188 - 197

Published: June 6, 2022

Language: Английский

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