Plant Secondary Metabolites—Central Regulators Against Abiotic and Biotic Stresses DOI Creative Commons
Ameer Khan,

Farah Kanwal,

Sana Ullah

et al.

Metabolites, Journal Year: 2025, Volume and Issue: 15(4), P. 276 - 276

Published: April 16, 2025

As global climates shift, plants are increasingly exposed to biotic and abiotic stresses that adversely affect their growth development, ultimately reducing agricultural productivity. To counter these stresses, produce secondary metabolites (SMs), which critical biochemical essential compounds serve as primary defense mechanisms. These diverse compounds, such alkaloids, flavonoids, phenolic nitrogen/sulfur-containing act natural protectants against herbivores, pathogens, oxidative stress. Despite the well-documented protective roles of SMs, precise mechanisms by environmental factors modulate accumulation under different stress conditions not fully understood. This review provides comprehensive insights into recent advances in understanding functions SMs plant emphasizing regulatory networks biosynthetic pathways. Furthermore, we explored unique contributions individual SM classes responses while integrating findings across entire spectrum diversity, providing a resilience multiple conditions. Finally, highlight emerging strategies for harnessing improve crop through genetic engineering present novel solutions enhance sustainability changing climate.

Language: Английский

Priming agents combat copper stress in wheat (Triticum aestivum L.) under hydroponic conditions: Insights in impacts on morpho–physio–biochemical traits and health risk assessment DOI Creative Commons
Jing Ma,

Ming Zou,

Willie J.G.M. Peijnenburg

et al.

Ecotoxicology and Environmental Safety, Journal Year: 2025, Volume and Issue: 291, P. 117899 - 117899

Published: Feb. 1, 2025

In recent years, the use of priming agents, such as silicon, melatonin, salicylic acid, glycine betaine, and ascorbic acid has gained significant attention for their role in mitigating abiotic stresses across various plant species. While previous research been conducted on individual impact metal stress resistance among crop species, combined effects context heavy stressed conditions remain underexplored. Wheat (Triticum aestivum L.) seedlings was grown under toxic concentration copper (Cu) i.e., 100 µM which were applied with hydroponic 21 days. The outcomes indicated that Cu nutrient solution notably reduced growth biomass, photosynthetic pigments, gas exchange attributes. However, also induced oxidative plants by increasing malondialdehyde (MDA), hydrogen peroxide (H2O2) increased compounds enzymatic non-enzymatic antioxidants, health risk index (HRI) gene expression sugar content. Furthermore, a increase proline metabolism, AsA-GSH cycle, pigmentation cellular components observed. Although, application different showed characteristics, compounds, decreased HRI. addition, agents enhanced fractionation metabolism cycle T. seedlings. These results open new insights sustainable agriculture practices hold immense promise addressing pressing challenges contamination agricultural soils.

Language: Английский

Citations

0
Unveiling the Thermotolerance and Growth-Promoting Attributes of Endophytic Bacteria Derived from Oryza sativa: Implications for Sustainable Agriculture DOI Creative Commons
Wonder Nathi Dlamini, Wei-An Lai, Wen‐Ching Chen

et al.

Microorganisms, Journal Year: 2025, Volume and Issue: 13(4), P. 766 - 766

Published: March 27, 2025

High temperatures pose significant challenges to rice plants’ growth and their associated endophytic bacteria. Understanding how these bacteria respond heat stress is vital. We assessed the potential of five bacterial strains derived from Oryza sativa—Bacillus tequilensis LB3, B. coagulans LB6, paralicheniformis AS9, pumilus LB16, paranthracis i40C—to mitigate effects on plants. These demonstrated robust abilities in producing indole-3-acetic acid (IAA) siderophores, nitrogen fixation, solubilization phosphate potassium. Under high-temperature conditions, they significantly enhanced plant growth, with increases length up 78% at 40 °C. Notably, LB6 showed highest biomass increase (195%). The also improved chlorophyll SPAD values, an indicator reduced health. Phytohormone profiling biochemical analyses revealed abscisic (ABA) levels, lipid peroxidation (MDA), elevated osmoprotectant proline accumulation under stress. Inoculated plants exhibited 539 ng g−1 ABA (vs. 62 uninoculated controls), a 68% reduction MDA (indicating less oxidative damage), synthesis, collectively suggesting adaptation. changes were linked IAA production nutrient modulation, which alleviated heat-induced physiological decline. findings underscore endophytes as biofertilizers improve resilience Among strains, superior performance, offering greatest promise for heat-stress mitigation production. This study advances our understanding phytohormonal, signaling, chemical processes underlying bacterial-mediated thermotolerance, providing foundation sustainable agricultural strategies. Future research can explore morphological analyses, stress-responsive gene expression (e.g., HSPs, DREBs, APX) combined selected fertilizers cultivation.

Language: Английский

Citations

0
Innovative Approach Using Different Nano − Primers To Enhance Stress Tolerance in Barley (Hordeum vulgare L.) Under Lead Toxicity DOI
Arwa Abdulkreem AL‐Huqail, Aishah Alatawi, Suliman Mohammed Suliman Alghanem

et al.

Journal of soil science and plant nutrition, Journal Year: 2025, Volume and Issue: unknown

Published: April 10, 2025

Language: Английский

Citations

0
Plant Secondary Metabolites—Central Regulators Against Abiotic and Biotic Stresses DOI Creative Commons
Ameer Khan,

Farah Kanwal,

Sana Ullah

et al.

Metabolites, Journal Year: 2025, Volume and Issue: 15(4), P. 276 - 276

Published: April 16, 2025

As global climates shift, plants are increasingly exposed to biotic and abiotic stresses that adversely affect their growth development, ultimately reducing agricultural productivity. To counter these stresses, produce secondary metabolites (SMs), which critical biochemical essential compounds serve as primary defense mechanisms. These diverse compounds, such alkaloids, flavonoids, phenolic nitrogen/sulfur-containing act natural protectants against herbivores, pathogens, oxidative stress. Despite the well-documented protective roles of SMs, precise mechanisms by environmental factors modulate accumulation under different stress conditions not fully understood. This review provides comprehensive insights into recent advances in understanding functions SMs plant emphasizing regulatory networks biosynthetic pathways. Furthermore, we explored unique contributions individual SM classes responses while integrating findings across entire spectrum diversity, providing a resilience multiple conditions. Finally, highlight emerging strategies for harnessing improve crop through genetic engineering present novel solutions enhance sustainability changing climate.

Language: Английский

Citations

0