Melatonin: dual players mitigating drought-induced stress in tomatoes via modulation of phytohormones and antioxidant signaling cascades DOI Creative Commons
Shifa Shaffique, Anis Ali Shah,

⋅Sang-Mo Kang

и другие.

BMC Plant Biology, Год журнала: 2024, Номер 24(1)

Опубликована: Ноя. 20, 2024

Drought stress significantly retards the plant production. Melatonin is a vital hormone, signaling molecule, and bio-regulator of diverse physiological growth development processes. Its role in boosting agronomic traits under conditions has received considerable attention. However, underlying molecular mechanism action how they increase drought tolerance not been fully interpreted. The current study aimed to ascertain protective melatonin fortifying antioxidant defense system, modulating phytohormone profile, improving tomato seedlings stress. After V1 stage (1st leaf emerged), were exposed PEG-6000 mimic drought-induced (DR 10% DR 20%), followed by exogenous application 100 µM soil drench. Drought-induced negatively impacted reducing biomass accumulation, diminishing salicylic acid (SA) chlorophyll levels, dramatically lowering ability. protected them activating which decreased oxidative burst increased activities SOD, CAT, APX. Administration drench most remarkably downregulated transcription factors SlDREB3 SlNCED3. This validated moderating potential against maintaining development, enhancing hormone elevating enzyme activities, suppressing relative expression drought-responsive genes. These findings also provide basis for use MT agricultural research other relevant fields study.

Язык: Английский

Melatonin as a key regulator in seed germination under abiotic stress DOI Open Access
Lei Wang, Mohsin Tanveer, Hongling Wang

и другие.

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

Процитировано

23
Melatonin—Angel of Plant Growth Regulation and Protection DOI Creative Commons

Huanyu Cai,

Jie Li, Jun Li

и другие.

Advanced Agrochem, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

4
Progesterone as a Plant Physiochemical Regulator: Mechanisms and Efficacy in Alleviating Abiotic Stress DOI
Hossam S. El‐Beltagi, Mohamed Abdel-Haleem, Adel A. Rezk

и другие.

Deleted Journal, Год журнала: 2025, Номер 77(2)

Опубликована: Март 10, 2025

Язык: Английский

Процитировано

4
The Physiological Mechanism of Exogenous Melatonin Regulating Salt Tolerance in Eggplant Seedlings DOI Creative Commons
Yu Zhang, Jia Li, Handong Wang

и другие.

Agronomy, Год журнала: 2025, Номер 15(2), С. 270 - 270

Опубликована: Янв. 22, 2025

There is little study on melatonin’s ability to prevent salt damage in eggplants, despite the fact that it a strong antioxidant plants has been found help mitigate variety of adverse challenges. In this study, we used “Anhui Eggplant No.8” as test material and simulated stress by irrigating roots with 150 mmol·L NaCl solution. Subsequently, treated eggplants different concentrations exogenous melatonin (0, 50, 100, 150, 200, 250 μmol·L) assessed plant traits an array physiological biochemical indices following application observe impact stress. Our results indicate at concentration 200 μmol·L can significantly alleviate inhibition eggplant photosynthesis under increasing content chlorophyll leaves activity enzymes. This leads notable increase levels non-enzyme antioxidants osmotic regulatory substances. As result, capacity enhanced, degree membrane lipid peroxidation reduced, growth seedlings effectively promoted, thereby strengthening tolerance seedlings. Fluorescence quantitative data analysis indicates SmCAT4 indeed gene positively regulates However, SmPPO family, did not find any genes respond research provides theoretical foundation for improving yield productivity quality protected farming clarifying mechanism which controls

Язык: Английский

Процитировано

2
Dynamic physiology and transcriptomics revealed the alleviation effect of melatonin on Reaumuria trigyna under continuous alkaline salt stress DOI Creative Commons
Xuebo Li, Lei Wang, H. J. Wang

и другие.

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

Опубликована: Янв. 21, 2025

Introduction Reaumuria trigyna , a pivotal salt-tolerant plant species in Central Asian salt desert ecosystems, has garnered significant attention due to its resilience under harsh environmental conditions. This study investigates the response mechanisms of melatonin on dynamic physiology and transcriptomics critical ecosystems. Despite progress understanding tolerance, research positive effects particularly impact seed germination underlying physiological molecular mechanisms, remains limited. Methods In this study, we evaluated responses continuous alkaline stress examined effect germination. Results Our results demonstrate that at concentrations 300μmol/L significantly enhances growth promotes accumulation osmotic regulators. Notably, treatment increased rate by 35.48% compared group, which exhibited 52.15% lower than untreated control. The key mechanism identified involves melatonin’s ability increase antioxidant enzyme activity, reduce reactive oxygen hydrogen peroxide levels, alter gene expression patterns. Discussion Transcriptomic analysis revealed changes expression, photosynthetic signal transduction, phytohormone signaling, MAPK peroxisome pathway, are crucial for plant’s stress. findings provide new insights into how affects growth, germination, These address gap current scientific knowledge offer valuable theoretical support practical guidance cultivating salt-resistant crops ecological restoration salt-affected environments.

Язык: Английский

Процитировано

1
Hormonal signaling at seed germination and seedling stage of plants under salinity stress DOI Creative Commons

Tuhina Ghosh,

Kousik Atta, Saptarshi Mondal

и другие.

Plant Growth Regulation, Год журнала: 2025, Номер unknown

Опубликована: Март 3, 2025

Язык: Английский

Процитировано

1
Exploring Plant Resilience Through Secondary Metabolite Profiling: Advances in Stress Response and Crop Improvement DOI Open Access
Naeem Khan

Plant Cell & Environment, Год журнала: 2025, Номер unknown

Опубликована: Март 17, 2025

ABSTRACT The metabolome, encompassing small molecules within organisms, provides critical insights into physiology, environmental influences, and stress responses. Metabolomics enables comprehensive analysis of plant metabolites, uncovering biomarkers mechanisms underlying adaptation. Regulatory genes such as MYB WRKY are central to secondary metabolite synthesis resilience. By integrating metabolomics with genomics, researchers can explore stress‐related pathways advance crop improvement efforts. This review examines metabolomic profiling under conditions, emphasizing drought tolerance mediated by amino acids organic acids. Additionally, it highlights the shikimate pathway's pivotal role in synthesizing metabolites essential for defense. These contribute understanding metabolic networks that drive resilience, informing strategies agricultural sustainability.

Язык: Английский

Процитировано

1
Have All of the Phytohormonal Properties of Melatonin Been Verified? DOI Open Access
Woong June Park

International Journal of Molecular Sciences, Год журнала: 2024, Номер 25(6), С. 3550 - 3550

Опубликована: Март 21, 2024

Melatonin is a ubiquitous regulator in plants and performs variety of physiological roles, including resistance to abiotic stress, regulation growth development, enhancement plant immunity. exhibits the characteristics phytohormone with its pleiotropic effects, biosynthesis, conjugation, catabolism, effective concentration, shape location dose-response curves. In addition, CAND2/PMTR1, phytomelatonin receptor candidate belonging G protein-coupled receptors (GPCRs), supports concept melatonin as phytohormone. However, biochemistry needs be further characterized. particular, some experimental findings date cannot explained by known GPCR signaling mechanisms, so studies are needed explore possibility novel mechanisms.

Язык: Английский

Процитировано

9
Combined application of melatonin and Bacillus sp. strain IPR-4 ameliorates drought stress tolerance via hormonal, antioxidant, and physiomolecular signaling in soybean DOI Creative Commons

Odongkara Peter,

Muhammad Imran, Shifa Shaffique

и другие.

Frontiers in Plant Science, Год журнала: 2024, Номер 15

Опубликована: Июнь 21, 2024

The role of melatonin and plant growth-promoting rhizobacteria (PGPR) in enhancing abiotic stress tolerance has been widely investigated. However, the mechanism underlying interaction between PGPR drought is poorly understood. In this study, we investigated

Язык: Английский

Процитировано

4
Melatonin Alleviates Abscisic Acid Deficiency Inhibition on Photosynthesis and Antioxidant Systems in Rice under Salt Stress DOI Open Access
Feiyu Yan, Xin Chen, Zhenzhen Wang

и другие.

Phyton, Год журнала: 2024, Номер 93(7), С. 1421 - 1440

Опубликована: Янв. 1, 2024

Melatonin and abscisic acid, as major plant hormones, play important roles in the physiological biochemical activities of crops, but interaction between two under salt stress is not yet clear. This study investigated endogenous levels melatonin acid rice by using exogenous melatonin, their synthetic inhibitors, examined interactions stress. The research results indicate that can improve tolerance. alleviated sensitivity caused deficiency, increased antioxidant enzyme activity content treated with synthesis reduced total reactive oxygen species thiobarbituric substance accumulation. also key photosynthetic enzymes pigments, maintaining parameters gas exchange chlorophyll fluorescence. In summary, effects deficiency on photosynthesis systems improved beneficial for expanding understanding regulation crop

Язык: Английский

Процитировано

4