Chlorophyll fluorescence characteristics and lipid metabolism in endangered Cycas panzhihuaensis exposed to drought, high temperature and their combination

Plant Physiology and Biochemistry, Journal Year: 2025, Volume and Issue: unknown, P. 109858 - 109858

Published: April 1, 2025

Language: Английский

Optimizing SiO₂ Nanoparticle Structures to Enhance Drought Resistance in Tomato (Solanum lycopersicum L.): Insights into Nanoparticle Dissolution and Plant Stress Response

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

Published: April 9, 2025

Drought stress significantly limits crop productivity and poses a critical threat to global food security. Silica nanoparticles (SiO2NPs) have shown potential mitigate drought stress, but the role of nanostructure on overall efficacy remains unclear. This study evaluated solid (SSiO2NPs), porous (PSiO2NPs), hollow (HSiO2NPs) SiO2NPs for their effects drought-stressed tomatoes (Solanum lycopersicum L.). Silicic acid release rates followed order: HSiO2NPs > PSiO2NPs SSiO2NPs Bulk-SiO2. Compared untreated controls, foliar application under improved shoot Si concentrations plants' dry weight. These treatments also enhanced antioxidant enzyme activities (catalase, peroxidase, superoxide dismutase) phytohormone-targeted metabolome levels (jasmonic acid, salicylic auxin), contributing greater tolerance. Conversely, SSiO2NPs, silicic Bulk-SiO2 had minimal impact plant weight or physiological responses. results highlight importance architecture in alleviating promoting sustainable agriculture.

Language: Английский

Chlorophyll fluorescence characteristics and lipid metabolism in endangered Cycas panzhihuaensis exposed to drought, high temperature and their combination

Plant Physiology and Biochemistry, Journal Year: 2024, Volume and Issue: unknown, P. 109210 - 109210

Published: Oct. 1, 2024

Language: Английский