The Role of Polyphenols in Abiotic Stress Tolerance and Their Antioxidant Properties to Scavenge Reactive Oxygen Species and Free Radicals

Antioxidants, Journal Year: 2025, Volume and Issue: 14(1), P. 74 - 74

Published: Jan. 10, 2025

Plants have evolved complex mechanisms to cope with diverse abiotic stresses, the phenylpropanoid pathway playing a central role in stress adaptation. This produces an array of secondary metabolites, particularly polyphenols, which serve multiple functions plant growth, development, regulating cellular processes, and responses. Recent advances understanding molecular underlying metabolism revealed regulatory networks involving MYB transcription factors as master regulators their interactions signaling pathways. review summarizes our current polyphenol-mediated adaptations plants, emphasizing regulation function key compounds. We discussed how various including heat chilling stress, drought, salinity, light UV radiation, nanoparticles chemical heavy metal toxicity, modulate trigger accumulation specific polyphenolic The antioxidant properties these phenolic acids, flavonoids, anthocyanins, lignin, roles reactive oxygen species scavenging, neutralizing free radicals, membrane stabilization, osmotic adjustment are discussed. Understanding metabolic responses is crucial for developing stress-resilient crops improving agricultural productivity under increasingly challenging environmental conditions. provides comprehensive insights into integrating adaptation mechanisms, highlighting potential targets enhancing crop tolerance through adjustment.

Language: Английский

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Algae extract-based nanoemulsions for photoprotection against UVB radiation: an electrical impedance spectroscopy study

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Jan. 14, 2025

Abstract Skin cancer is one of the most common types worldwide, with exposure to UVB radiation being a significant risk factor for its development. To prevent skin cancer, continuous research efforts have focused on finding suitable photoprotective ingredients from natural sources that are also environmentally friendly. This study aimed develop oil-in-water nanoemulsions containing marine macroalgae extract. A Box–Behnken experimental design was used identify promising formulation composition, resulting in optimal physical properties. These properties, including droplet size, polydispersity index (PDI), and zeta potential, were evaluated using dynamic light scattering (DLS). assess photoprotection capacity formulations, electrical impedance spectroscopy (EIS) employed evaluate alterations characteristics excised pig membranes placed Franz cells equipped 4-electrode set-up. The final composition nanoemulsion caprylic/capric triglycerides 4%, Macrogolglycerol ricinoleate 30%, algae extract 1%. had an average size 128.5 ± 8.6 nm, PDI 0.25 0.06, potential 45.14 0.02 mV. Compared control group, statistically significant. Specifically, only 15% reduction membrane resistance following observed when used, whereas 50% vehicle. In conclusion, this work demonstrates developed based show protective against skin.

Language: Английский

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Biosynthesis of the Natural Antioxidant Mycosporine-Glycine and Its Anti-Photodamage Properties

Journal of Agricultural and Food Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 24, 2025

Ultraviolet B (UVB) radiation directly damages the skin, leading to disorders, increasing demand for natural UV-absorbing compounds as alternatives synthetic sunscreens. Mycosporine-like amino acids (MAAs), particularly mycosporine-glycine (M-Gly), are promising due their antioxidant properties, low molecular weight, and high molar extinction coefficient. However, its application is limited by abundance. In this study, we identified recombined three genes (mysA, mysB, mysC) from Microcystis aeruginosa enable M-Gly production in Escherichia coli BL21(DE3). was purified via performance liquid chromatography (HPLC) characterized using UV, chromatography-tandem mass spectrometry (LC-MS/MS), nuclear magnetic resonance (NMR) spectroscopy. We explored preventive therapeutic effects on UVB-induced skin damage HaCaT cells mice. Western blot analysis suggests that activates TGF-β/Smad WNT/β-catenin signaling pathways promote repair. This research provides an efficient synthesis platform supports potential use therapeutics photodamage.

Language: Английский

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Editorial to special issue on Photosynthetic organisms for sustainable development

Plant Physiology and Biochemistry, Journal Year: 2024, Volume and Issue: 217, P. 109263 - 109263

Published: Nov. 1, 2024

Language: Английский

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Effect of Reactive Oxygen Species Photoproduced in Different Water Matrices on the Photostability of Gadusolate and Mycosporine-Serinol

Marine Drugs, Journal Year: 2024, Volume and Issue: 22(10), P. 473 - 473

Published: Oct. 16, 2024

In the past few years, there has been an increasing interest in mycosporines-UV-absorbing molecules-bringing important insights into their intrinsic properties as natural sunscreens. Herein, mycosporine-serinol and gadusol (enolate form)/gadusolate were exposed to UV radiation via a solar simulator photostability was assessed pure water different matrices like river, estuary ocean water. general, this study revealed that photodegradation of gadusolate higher than due generation singlet oxygen on irradiation. water, terms photostability, both found offer good protection high performance quantum yield ((0.8 ± 0.2) × 10

Language: Английский

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