Melatonin as a key regulator in seed germination under abiotic stress

Journal of Pineal Research, Год журнала: 2024, Номер 76(1)

Опубликована: Янв. 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.

Язык: 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, Год журнала: 2024, Номер 24(1)

Опубликована: Май 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.

Язык: Английский

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Climate Change Challenges in Temperate and Sub-Tropical Fruit Tree Cultivation

Encyclopedia, Год журнала: 2024, Номер 4(1), С. 558 - 582

Опубликована: Март 15, 2024

In the last few years, world has experienced impacts of climate change, such as elevated mean annual temperature, extreme weather events, drought, etc. Among living organisms, perennial plant species are ones mostly exposed to change impacts, they may experience different events within same year, flooding during some periods and drought in summer months, extremely low temperatures winter but excessively high summer, Climate affects a range physiological functions temperate fruit nut tree species, their phenophases, bud dormancy release vernalization, pollination set, growth quality, well sprouting initiation. Besides these, impact on pests, diseases, weeds generate significant negative interactions with physiology, threatening food production, safety, human welfare. present manuscript, general aspect fruits’ trees’ is described commented on.

Язык: Английский

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Small but powerful: RALF peptides in plant adaptive and developmental responses

Plant Science, Год журнала: 2024, Номер 343, С. 112085 - 112085

Опубликована: Апрель 6, 2024

Plants live in a highly dynamic environment and require to rapidly respond plethora of environmental stimuli, so that maintain their optimal growth development. A small plant peptide, rapid alkalization factor (RALF), can increase the pH value extracellular matrix cells. RALFs always function with its corresponding receptors. Mechanistically, effective amount RALF is induced released at critical period development or under different external factors. Recent studies also highlighted role peptides as important regulators intercellular communications, well operation signal perception ligands for receptor kinases on surface plasma membrane, integrate various cues. In this context, understanding fine-print above processes may be essential solve problems crop adaptation harsh environments current climate trends scenarios, by genetic means. This paper summarizes knowledge about structure diversity roles response stresses, highlighting unanswered questions solved.

Язык: Английский

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Melatonin mitigates drought stress by increasing sucrose synthesis and suppressing abscisic acid biosynthesis in tomato seedlings

Physiologia Plantarum, Год журнала: 2024, Номер 176(4)

Опубликована: Июль 1, 2024

The increasing prevalence of drought events poses a major challenge for upcoming crop production. Melatonin is tiny indolic tonic substance with fascinating regulatory functions in plants. While plants can respond several ways to alleviate stress, the processes underpinning stress sensing and signaling are poorly understood. Hereafter, objectives this investigation were explore putative melatonin regulation sugar metabolism abscisic acid biosynthesis drought-stressed tomato seedlings. (100 μM) and/or water foliar sprayed, followed by being imposed 14 days. Drought significantly decreased biomass accumulation, inhibited photosynthetic activity, stimulated senescence-associated gene 12 (SAG12) expression. treatment effectively reversed drought-induced growth retardation as evidenced increased leaf pigment balance restricted (ABA) accumulation. Sugar particularly sucrose content, was higher drought-imposed seedlings, possibly owing transcription levels non-fermenting 1-related protein kinase 2 (SnKR2.2) ABA-responsive element binding factors (AREB2). addition further uplifted which coincided activity synthase (SS, 130%), phosphate (SPS, 137%), starch degradation encoding enzyme β-amylase (BAM, 40%) α-amylase (AMY, 59%) upregulated their BAM1(10.3 folds) AMY3 (8.1 genes expression at day relative control. Under deficit conditions, supplementation ABA content (24%) its expressions. Additionally, transporter subfamily SUT1 SUT4 melatonin. Collectively, our findings illustrate that enhances tolerance seedlings stimulating negatively regulating synthesis.

Язык: Английский

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Revealing mechanistic basis of ameliorating detrimental effects of cadmium in cherry tomatoes by exogenous application of melatonin and brassinosteroids

Ecotoxicology and Environmental Safety, Год журнала: 2024, Номер 283, С. 116768 - 116768

Опубликована: Июль 26, 2024

Increased anthropogenic activities over the last decades have led to a gradual increase in cadmium content soil, which, due its high mobility makes Cd accumulation plants serious threat health of animals and humans. Plant hormones including melatonin (Mel) brassinosteroids (BR) are known provide tolerance against various abiotic stresses. In this work, role combined separate exogenous application Mel BR on stress cherry tomato was examined. significantly reduced growth by inducing oxidative K

Язык: Английский

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RALF proteins—a monitoring hub for regulating salinity tolerance in plants

Frontiers in Plant Science, Год журнала: 2025, Номер 15

Опубликована: Янв. 3, 2025

in plants is highly complex due to the involvement of several key players regulating ST (Khan et al., 2020;Tanveer and Ahmed, 2020). The SS reduces plant growth by inducing membrane depolarization, which later increases ROS production cytosol activated voltage-gated ROS-activated K + -outward rectifying channel transporter at plasma (PM) (Fig. 1B) (Wegner al. 2011;Shabala 2015). Thus, this context, activation PM-H -ATPase Ca 2+ signaling critical cytosolic homeostasis plants.Compared with alkalization, higher H required reduce SS-induced outward channels (e.g., GORK) (Shabala 2016). results a significant depolarization leading considerable disturbance cell ionic balance metabolism. Plants' ability maintain negative potential (MP) values has been firmly associated their tolerance (Chen 2007;Bose 2015;Chakraborty In RALF proteins are important for alkalization may play an role regulate plants. regulates activity (Gjetting 2020), imposes massive implication regulation via controlling membrane. Though determining MP (Palmgren Nissen, 2011), more MPs operation ion transporters. gradients between extracellular intracellular space create motive force secondary active transport other ions , NH4 NO3 -; PO4 2-; SO4 2-) -coupled co-transport systems RALF-induced modulation be essential factor cellular and, ultimately, metabolism under stress conditions. However, it argued that lead ATP reduction cells, affects survive salinity (Rubio tight RALF-mediated required. there also less evidence prove as upstream inhibitor blocks some or transporters (e.g. SOS1, HAK family) driven gradient.Moreover, diverse RALFs interact receptor proteins, can suggested different affect signal pathways activate transporters/channels LRR domains LRX3 LRX4 both AtRALF22/23 FER salt response (Zhao 2018). Recently 2020) showed pump was increased three times after application 1 µM RALF33/36, while, aha mutant hypersensitive AtRALF1 unknown led net influx cytoplasm increase pH possible (Li 2022). how cells accurately perceive environmental release problem needs solved. triggers apoplastic thereby inhibits (Kesten 2019), however, induce formation mature two halophytes, -ATPases contributes Na efflux from low /H exchanger PM (Bose Such induced could mediated RALF-FER-AHA2 acidification ST. This aspect examined future studies.Ca being component wall structure (Bascom 2018), oscillations cytoplasmic concentration second messenger involved various physiological reactions transmission processes (Thor, 2019;Sanders 1999). So far, only few mediators have found "signatures". Arabidopsis, level promoting reducing (Haruta 2008).Later, relationship confirmed change depends on occurs before alkalinization interacts pHdependent manner calmodulin-like 38 root (Campos Furthermore, RALF33 treatment did not characteristics while RALFL36 effects fer Arabidopsis al.,2020), again suggesting peptides bind receptors trigger pumping PM. Therefore, exploring receptor-induced testing whether overlap direction noteworthy (Tanveer 2018;Choudhary 2021).RALFs overall redox (Zhang For instance, positively hair polar auxin-mediated (Yu 2012). Likewise, related transcription respiratory burst oxidase homologs (RBOH) (Franck 2018).For FER-LLG1-Rop-Guanine Nucleotide Exchange RBOH dependence (Duan 2010;Li 2015).ANX1 ANX2 integrity during pollen tube (Boisson-Dernier 2013), thus protein requires molecules Nonetheless, overproduction inevitable, linked maintaining equilibrium scavenging; thus, Tanveer 2018;Khan Moreover, state tissue-specific NaCl dose-specific (Shah al.). should explored studies.Cell (CW) biosynthesis very mechanism examine CW status, exhibit maintenance (CWIM) system.The CWMI system assists adapting conditions without compromising organization (Liu 2021). adversely CWI, plants' CWIM Having said that, universal messenger, actively concentrations CW, apoplast, raises question relating validity concept. Feng (2018) CWI 1B). sensor Ca2+ into (Feng contains malectin directly de-methyl-esterified HG vitro vivo 2018;Lin 2018;Liu suggests probably senses changes its domain then transduces signals kinase domain. Later, shown dissociate LRX3/4/5-RALFs released LLG1-FER allow transduction behind dissociation LRX3/4/5 further investigated. FEI1 FEI2 LRR-RLK complexes cellulose synthesis (Xu 2008) loss function mutants roots reduced contents (Basu 2015), indicating FEIs sensing.Hormonal important, phytohormones Abscisic acid (ABA) hormone resistance tolerance. crosstalk ABA abiotic stresses including water deficit Studies RALF1-FER pathway activates ABI2 (ABA Insensitive 2) phosphatase GEF1/4/10-ROP11 2012;Chen LRX triple well displayed hypersensitivity, mimicked overexpression RALF22/23 LRX3/4/5-RALF22/23-FER regulated accumulation (ABA, JA, SA) 2021).Moreover, acts regulatory AGB1-a G β-subunit mediating stomatal opening FER-ABG1 reported responses Assmann, Mutants lacking ABG1 phenotype 2018) even AtRALF effective hypersensitivity Contrarily, any levels 2018).Taken example non-vascular plants, PpRALF3 knockout lines resistant moss (Physcomitrium patens), implying functional (Solís-Miranda 2023). phytohormones-e.g., melatonin considered studies. As melatonin-induced enhancement negate salinity-induced preventing channels, MEL elsewhere Shabala, 2020;Huang 2022;Huang 2024).Given gene expression species-and tissuespecific (Kim 2021. five were observed popular 2003) 37 (Abarca A total 765 identified 51 species (Campbell Turner, 2017). Recently, genome-wide association study revealed 163 genes seven Rosaceae family, 45 phylogenetic tree analysis diversification (Fig 1C), genetic differences among govern plants.RALFs widely distributed expansion result interaction intra-and extra-cellular ions, deposition new materials, rearrangement existing walls. During transition vegetative reproductive growth, functions normal life activities achievable because forms network complete these functions.For RALF-FER conserved signaling. significance still outstanding focused examining instance,• does FER-specific internalization conduct focus research.• Equally interesting internalization. While accepted development together components receptors, spatio-temporal aspects such remain largely unknown, light apparent dual RALF.• It worth noting hormones ST, however indirectly fully comprehended.• rebalance yet clear. great challenge research developing crops.• Given family binds large arrays mechanisms specificity RALFs-receptor examined. sensed FERONIA (FER) co-receptor LLGs, perturbation initiates repair Higher entry induces perturbation, dissociates LRXs promotes RALF22/23-induced FER, finally, 2018).Moreover, death through homeostasis, accumulation, Respiratory homolog Phylogenetic rice, soybean. We one model (Arabidopsis thaliana L.), cereal (rice-Oryza sativa legume (soybean-Glycine max L.). first number genes, example, 27 soybeans, 41 ric,e 34 sequences downloaded phytozome (https://phytozome-next.jgi.doe.gov/), rice Genomics Network (https://rice.uga.edu/cgi-bin/gbrowse/rice/) TAIR (www.arabidopsis.org/) databases, respectively. produced using MEGA 11 software Neighbor-Joining (NJ) method 1000 bootstrap replicates.

Язык: Английский

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Hormonal signaling at seed germination and seedling stage of plants under salinity stress

Plant Growth Regulation, Год журнала: 2025, Номер unknown

Опубликована: Март 3, 2025

Язык: Английский

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Genome‐Wide Identification and Functional Characterization of New Serotonin N‐Acetyltransferases in Soybean

Food Science & Nutrition, Год журнала: 2025, Номер 13(4)

Опубликована: Апрель 1, 2025

ABSTRACT Melatonin is recognized as a crucial plant hormone due to its significant role in development, growth promotion, enhancing antioxidant activity, and stress resistance. Soybean one of the most important crops globally. To date, three SNAT genes have been cloned Arabidopsis rice; however, only gene, GmSNAT1 , has characterized soybeans. In this study, members GmGNAT family were identified through genome‐wide analysis. Two candidate GmSNAT ( GmSNAT3.1 GmSNAT3.2 ) selected based on phylogenetic tree analysis exhibited highly similar protein tertiary structures ZmSNAT3. Furthermore, functionality these two was confirmed for synthesizing N‐acetylserotonin or melatonin using serotonin 5‐methoxytryptamine substrates vitro. RNA‐seq data indicated that transcription levels downregulated under conditions dehydration salt stress. Additionally, SNAT3 from other leguminous plants homology with genes. This study elucidates soybeans establishes foundation further exploration into physiological functions within legume plants.

Язык: Английский

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

Antioxidants, Год журнала: 2024, Номер 13(6), С. 663 - 663

Опубликована: Май 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.

Язык: Английский

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