Melatonin as a key regulator in seed germination under abiotic stress

Journal of Pineal Research, Journal Year: 2024, Volume and Issue: 76(1)

Published: Jan. 1, 2024

Abstract Seed germination (SG) is the first stage in a plant's life and has an immense importance sustaining crop production. Abiotic stresses reduce SG by increasing deterioration of seed quality, reducing potential, vigor. Thus, to achieve sustainable level yield, it important improve under abiotic stress conditions. Melatonin (MEL) biomolecule that interplays developmental processes regulates many adaptive responses plants, especially stresses. this review specifically summarizes discusses mechanistic basis MEL‐mediated MEL regulating some stress‐specific common responses. For instance, induced specific include regulation ionic homeostasis, hydrolysis storage proteins salinity stress, C‐repeat binding factors signaling cold starch metabolism high temperature heavy metal activation aquaporins accumulation osmolytes drought stress. On other hand, mediated gibberellins biosynthesis abscisic acid catabolism, redox Ca 2+ are amongst Nonetheless such as endogenous contents, plant species, growth conditions also influence above‐mentioned In conclusion, interacting with different physiological mechanisms.

Language: Английский

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The impact of biochar addition on morpho-physiological characteristics, yield and water use efficiency of tomato plants under drought and salinity stress

BMC Plant Biology, Journal Year: 2024, Volume and Issue: 24(1)

Published: May 9, 2024

Abstract The use of saline water under drought conditions is critical for sustainable agricultural development in arid regions. Biochar used as a soil amendment to enhance properties such water-holding capacity and the source nutrition elements plants. Thus, research was carried out assess impact biochar treatment on morphological physiological characteristics production Solanum lycopersicum greenhouses exposed stresses. study structured three-factorial split-split-plot design. There were 16 treatments across three variables: (i) quality, with freshwater water, electrical conductivities 0.9 2.4 dS m − 1 , respectively; (ii) irrigation level, 40%, 60%, 80%, 100% total evapotranspiration (ETC); (iii) application, addition at 3% dosage by (w/w) (BC ), control 0% ). findings demonstrated that salt deficiency hurt physiological, morphological, yield characteristics. Conversely, enhanced all Growth-related parameters, plant height, stem diameter, leaf area, dry wet weight, gas exchange attributes, rate transpiration photosynthesis, conductivity, well relative content decreased stresses, especially when 60% ETc or 40% ETc. resulted substantial enhancement vegetative growth-related characteristics, efficiency use, yield, reduced proline levels. Tomato 4%, 16%, 8%, different levels deficit (100% ETc, 80% ETc) than Overall, (3%) combined shows potential morpho-physiological support tomato plants, improve higher WUE semi-arid areas.

Language: Английский

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Biochar from agricultural waste as a strategic resource for promotion of crop growth and nutrient cycling of soil under drought and salinity stress conditions: a comprehensive review with context of climate change

Journal of Plant Nutrition, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 52

Published: Feb. 6, 2025

Language: Английский

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Phytohormones-mediated strategies for mitigation of heavy metals toxicity in plants focused on sustainable production

Plant Cell Reports, Journal Year: 2024, Volume and Issue: 43(4)

Published: March 18, 2024

Language: Английский

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Elicitors and Biostimulants to Mitigate Water Stress in Vegetables

Horticulturae, Journal Year: 2024, Volume and Issue: 10(8), P. 837 - 837

Published: Aug. 7, 2024

The acceleration of the climate crisis and increased demand for water have caused stress in many agricultural lands worldwide. This issue is utmost importance as represents one most crucial challenges sector food security, affecting growth yield crops. Developing strategies to mitigate adverse effects improve crop tolerance therefore crucial. review aimed analyze effect practices such elicitation biostimulation on mitigating vegetables. manuscript provides relevant recent information about studied various vegetable species their responses under deficit non-agricultural stress, highlighting use elicitors biostimulants. Inclusion criteria were scientific reports book chapters published from 2000 2024, including keywords follows: + vegetables, effects, drought management, eustressors biostimulants mitigation. According reported literature, it was found that physiological, biochemical, molecular vegetables depended factors severity duration deficit, plant species, phenological state plants. Traditional agronomic tillage, mulching, intercropping management evaluated. Recently, alternative gained significant interest, exogenous application phytohormones osmoprotectants, nutrient UV-B light, radiation, acoustic waves, among others, whose eustressive (as elicitors) been demonstrated. Among these eustressors, those physical origin show great potential stress. To individual mitigation, we proposed combination hormones gamma rays, He-Ne laser, UV-B. Further exploration required establish doses, conditions, mitigation yield, underscoring ongoing nature this research.

Language: Английский

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Mechanistic Approach on Melatonin-Induced Hormesis of Photosystem II Function in the Medicinal Plant Mentha spicata

Plants, Journal Year: 2023, Volume and Issue: 12(23), P. 4025 - 4025

Published: Nov. 29, 2023

Melatonin (MT) is considered a new plant hormone having universal distribution from prokaryotic bacteria to higher plants. It has been characterized as an antistress molecule playing positive role in the acclimation of plants stress conditions, but its impact on under non-stressed conditions not well understood. In current research, we evaluated MT application (10 and 100 μM) photosystem II (PSII) function, reactive oxygen species (ROS) generation, chlorophyll content mint (Mentha spicata L.) order elucidate molecular mechanism action photosynthetic electron transport process that still unclear. Seventy-two hours after foliar spray with μM MT, improved imported amount light energy capture, which caused 6% increase quantum yield PSII photochemistry (ΦPSII) rate (ETR). Nevertheless, reduced efficiency oxygen-evolving complex (OEC), causing donor-side photoinhibition, simultaneous slight ROS. Even so, decreased excess excitation at implying superior efficiency. The pressure PSII, spray, suggests induced stomatal closure through ROS production. response ΦPSII corresponds J-shaped hormetic curve, enhancement by MT. suggested stimulation functionality was triggered non-photochemical quenching (NPQ) stimulated production, enhanced function. concluded molecules can be used both biostimulants for enhancing crop yields.

Language: Английский

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Phytohormone as a savior in abiotic stress tolerance in underground vegetable crops

Elsevier eBooks, Journal Year: 2025, Volume and Issue: unknown, P. 151 - 159

Published: Jan. 1, 2025

Language: Английский

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Effects of melatonin and tryptophan applications on viability and germination performance of tomato seeds during and after artificial aging

Acta Scientiarum Polonorum Hortorum Cultus, Journal Year: 2025, Volume and Issue: 24(2), P. 33 - 52

Published: April 30, 2025

Although the diurnal fluctuations of melatonin (Mel) content in plants and its role abiotic biotic stress tolerance are well-documented, little is known about changes within seeds potential effects on seed viability or aging process. This study aimed to determine how artificial aging, induced by a controlled deterioration test, affects Mel tryptophan (Trp) viability. Furthermore, evaluated Trp applications mitigating impacts artificially aged seeds. Tomato treated with 250 µM were for up 8 days through test after which during ageing effect treatments germination performance was determined. Seeds also following order The positive vigor particularly evident compared control It observed that subjected contents exhibited an opposite trend. Applications precursor Trp, before significantly slowed down process alleviated adverse protecting membrane structures against peroxidation accumulation malondialdehyde (MDA) H2O2. Moreover, indicators such as electrical conductivity, MDA, H2O2 reduced untreated seeds, while activities antioxidant enzymes boosted. In conclusion, importance preserving viability, minimizing storage losses, slowing has been demonstrated, suggesting practical applications, endangered species valuable breeding materials.

Language: Английский

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Melatonin Interaction with Other Phytohormones in the Regulation of Abiotic Stresses in Horticultural Plants

Antioxidants, Journal Year: 2024, Volume and Issue: 13(6), P. 663 - 663

Published: May 28, 2024

Horticultural crops play a vital role in global food production, nutrition, and the economy. are highly vulnerable to abiotic stresses. These stresses hinder plant growth development by affecting seed germination, impairing photosynthetic activity, damaging root development, thus leading decrease fruit yield, quality, productivity. Scientists have conducted extensive research investigate mechanisms of resilience ability cope with environmental In contrast, use phytohormones alleviate detrimental impacts on horticulture plants has been generally recognized as an effective method. Among phytohormones, melatonin (MT) is novel hormone that regulates various plants’ physiological functions such seedling system architecture, efficiency, balanced redox homeostasis, secondary metabolites accumulation mineral nutrient uptake, activated antioxidant defense system. Importantly, MT application significantly restricted heavy metals (HMs) uptake increased modifying architecture addition, naturally occurring, multifunctional, nontoxic biomolecule having properties. Furthermore, this review described hormonal interaction between other signaling molecules order enhance stress tolerance crops. This focuses current advancements prospective approaches for enhancing crop stress.

Language: Английский

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Exploring the impact of exogenous melatonin on agro-morphological characteristics, carvacrol, and rosmarinic acid production in Satureja rechingeri Jamzad under drought stress

Chemical and Biological Technologies in Agriculture, Journal Year: 2024, Volume and Issue: 11(1)

Published: Aug. 12, 2024

Satureja rechingeri Jamzad (known as "Jatra" in Persian), which belongs to the Lamiaceae family, is a rich source of essential oil particularly carvacrol, and rosmarinic acid. Drought stress has detrimental impact on physiological biochemical parameters plants, leading decline plant productivity. Melatonin (MT), new growth regulator found abundantly been enhance plant's internal resistance various environmental stresses. The present study aimed examine exogenously applied MT agro-morphological, physio-biochemical, phytochemical traits S. plants cultivated under different levels drought stress. results indicated that treated with 200 µM obtained highest height, length width leaf, fresh, dry drug weight levels. values relative water content (RWC) (93.5%) chlorophyll (15.4 mg/g FW) were recorded by 100 µM, respectively, 100% FC. treatments (40, 60, 80% FC) without foliar spray significantly enhanced H2O2 content, electrolyte leakage, malondialdehyde leaves, whereas treatment decreased above parameters. lowest (11.5 nmol/g), leakage (3.08%), (0.78 µM/g) at In contrast, increased total phenol (TPC), acid (RA), oils (EOs) yield, carvacrol. maximum TPC (28.1 mg GAE/g DW), EOs (3.63%) yield (0.96%), carvacrol (95.66%) achieved 40% RA (7.43 DW) was Thus, potential through mitigation reactive oxygen species (ROS)-induced oxidative harm, well augmentation photosynthesis pigments, secondary metabolites such phenolics, levels, overall antioxidant scavenging capacity, preservation RWC during periods

Language: Английский

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