Spermidine improves plant growth and reduces dinotefuran accumulation in strawberries by competitively occupying ABC transporters.
Gao J, Dong X, Dai Y, Qiu Z, Wei C
Crop Improvement
It points toward a practical, natural way to grow safer strawberries with lower pesticide residues — the kind you actually eat — without sacrificing plant health.
Researchers found that spraying strawberry plants with a naturally occurring molecule called spermidine — found in foods like aged cheese and soybeans — dramatically reduced how much of a common insecticide built up in the leaves, stems, and roots. The plants also grew better, stayed greener, and handled the chemical stress more easily. It turns out spermidine essentially 'cuts in line' and blocks the tiny molecular doorways the insecticide normally uses to travel through the plant.
Key Findings
Spermidine significantly reduced accumulation of the neonicotinoid insecticide dinotefuran and its breakdown products in strawberry roots, stems, and leaves, with the strongest effect on migration to leaves.
Treated plants showed improved photosynthesis, higher levels of protective osmotic compounds, and reduced oxidative damage compared to untreated plants under pesticide stress.
Molecular docking and gene expression analyses revealed spermidine competes with dinotefuran for binding to ABC transporter subfamilies C and G, physically blocking the pesticide's main transport route through the plant.
chevron_right Technical Summary
A natural compound found in all living cells, spermidine, can reduce pesticide buildup in strawberries while helping the plants stay healthy under pesticide stress. It works partly by blocking the same cellular transport channels the pesticide uses to move through the plant.
Abstract Preview
Excessive use of neonicotinoid insecticides can cause various physiological and metabolic disorders in plants. Spermidine (Spd) plays a crucial role in mitigating plant abiotic stress. However, the...
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