Seed priming with nitric oxide and foliar glycine betaine application mitigates Cadmium toxicity and improves wheat yield.
Jabeen Z, Zahra S, Chaudhri A, Tahir A
Phytoremediation
Wheat grown in soils near old industrial sites or heavily fertilized fields may carry cadmium into the bread on your table — and these two low-cost treatments offer farmers a practical way to grow cleaner, heavier grain without changing the soil itself.
Cadmium is a toxic metal that sneaks into farm soils from factory pollution and certain fertilizers, and it quietly poisons wheat plants — stunting growth, shrinking grains, and reducing harvests. Researchers found that soaking seeds in a nitric oxide solution before planting, then spraying the growing plants with glycine betaine (a protective compound plants naturally make), gave wheat the tools to fight back against that poisoning. The combination rescued grain weight, spike size, and plant health even when the soil remained contaminated.
Key Findings
Cadmium stress significantly reduced all measured yield traits, including 1000-grain weight, total grain weight, spike length, and fertile spikelet count.
Combined nitric oxide seed priming and foliar glycine betaine application restored antioxidant enzyme activity and suppressed reactive oxygen species (ROS) accumulation in stressed wheat plants.
The dual treatment improved chlorophyll content and multiple morphological metrics, suggesting both physiological and structural recovery under cadmium stress.
chevron_right Technical Summary
Treating wheat seeds with nitric oxide before planting, combined with spraying leaves with glycine betaine (a natural compound found in beets and spinach), significantly reduced the damage caused by cadmium-contaminated soil and improved grain yield. Both treatments together restored plant growth, antioxidant defenses, and harvest metrics that cadmium stress had suppressed.
Abstract Preview
Cadmium (Cd) contamination of agricultural soils, from industrial and phosphate fertilizer inputs, poses a major threat to wheat production and food safety worldwide. A pot experiment was performed...
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