We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Exogenously Applied Sodium Nitroprusside Alleviated Cadmium Toxicity in Different Aromatic Rice Cultivars by Improving Nitric Oxide Accumulation and Modulating Oxidative Metabolism
Summary
Researchers investigated whether spraying sodium nitroprusside, a compound that releases nitric oxide, could help aromatic rice plants cope with cadmium-contaminated soil. They found that the treatment reduced oxidative stress markers in the plants and improved photosynthesis, yield, and grain quality across three rice varieties. The study suggests that nitric oxide supplementation may offer a practical approach for growing rice more safely in heavy metal-polluted agricultural areas.
Exogenous application of sodium nitroprusside (SNP) has previously been reported to trigger plant tolerance against a variety of environmental stresses. The present study was planned to investigate the possible role/s of exogenously applied SNP (50 or 100 μM) in alleviating cadmium (Cd)-induced effects on physio-biochemical processes, yield attributes, and grain quality traits of three fragrant rice cultivars, viz., Meixiangzhan-2 (MXZ), Guixiangzhan (GXZ), and Xiangyaxiangzhan (XYXZ) under 50 mg Cd kg−1 of soil. The results revealed that foliar spray of SNP (50 or 100 μM) on Cd-stressed rice plants reduced oxidative stress (lower hydrogen peroxide (H2O2), malondialdehyde (MDA), and electrolyte leakage (EL)) and improved the photosynthetic apparatus through higher chlorophyll contents, gas exchange attributes, and intact chloroplast configurations, and reduced Cd concentration in the leaves and grains of aromatic rice cultivars. The reduced levels of cellular ROS, MDA, and EL were related to the endogenous NO-mediated improvement in the activity of anti-oxidative enzymes and those involved during the ascorbate–glutathione cycle. However, among the different SNP levels, the foliar spraying of 50 μM of SNP was recorded to be the best treatment for fragrant rice growth, which increased grain yield by 42.06%, 46.03%, and 31.21%, and the quality trait of 2-acetyl-1-pyrroline (2-AP) content by 43.12%, 55.84%, and 35.72% in MXZ, GXZ, and XYXZ respectively, suggesting that GXZ is more responsive to SNP than MXZ and XYXZ fragrant rice cultivars. Collectively, our results deduced that cultivating the GXZ fragrant rice cultivar along with foliar application of 50 μM of SNP could sustain the grain yield and quality features of aromatic rice cultivation in heavy metal (especially Cd)-polluted soils.
Sign in to start a discussion.
More Papers Like This
ZnO nanoparticle-based seed priming modulates early growth and enhances physio-biochemical and metabolic profiles of fragrant rice against cadmium toxicity
Researchers studied how zinc oxide nanoparticles applied to rice seeds could help the plants resist cadmium toxicity in contaminated soils. The study found that this seed treatment substantially improved early growth and strengthened the plants' biochemical defenses. These findings suggest a potential strategy for growing crops more safely in soils contaminated with heavy metals.
ZnO Nanoparticle-based Seed Priming Modulates Early Growth and Enhances Physio-biochemical and Metabolic Profiles of Fragrant Rice Against Cadmium Toxicity
Researchers investigated whether priming fragrant rice seeds with ZnO nanoparticles could mitigate cadmium (Cd) toxicity during early seedling growth. They found that ZnO nanoparticle seed priming significantly improved seedling biomass and physiological attributes under Cd stress, though it had no significant effect on germination rate itself.
Involvement of Nitric Oxide and Melatonin Enhances Cadmium Resistance of Tomato Seedlings through Regulation of the Ascorbate–Glutathione Cycle and ROS Metabolism
Researchers found that melatonin and nitric oxide work together to enhance cadmium stress tolerance in tomato seedlings, with melatonin acting partly through nitric oxide signaling to reduce oxidative damage and support seedling growth under heavy metal stress.
Tetracycline Alleviates Cadmium Toxicity in Rice Seedlings by Altering Pollutant Accumulation, Nutrient Absorption, Osmoregulation and Antioxidant Metabolism
Researchers investigated how tetracycline antibiotics interact with cadmium contamination in rice seedlings, examining effects on growth, nutrient uptake, and antioxidant responses. The study found that tetracycline can alter how cadmium accumulates in rice, with implications for understanding co-contamination risks in agricultural environments where both pollutants are present.
Oxidative Damage in Roots of Rice (Oryza sativa L.) Seedlings Exposed to Microplastics or Combined with Cadmium
Rice seedlings exposed to polystyrene microplastics and cadmium showed combined toxic effects on root growth, fresh and dry weight, and antioxidant enzyme activities, with combined exposure producing greater oxidative damage than either pollutant alone. The study highlights synergistic phytotoxicity in a staple crop relevant to food security in microplastic-contaminated paddy soils.