ArticlePest management science2026
The effect and mechanism of melatonin-trehalose-selenium nanoparticles in alleviating the phytotoxicity of butachlor in rice.
Article in Pest management science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundNanoparticles show a great potential in enhancing crop stress tolerance, but their role in mitigating herbicide damage to rice remains unclear.
resultsThis study synthesized melatonin-trehalose-selenium nanoparticles (MT-SeNPs) with 21 nm particle size, exhibited good stability and in vitro antioxidant activity. Under butachlor stress, compared with water priming, MT-SeNPs priming significantly alleviated the phytotoxic symptoms in rice and reduced butachlor residues by 21.72-50.55%. Integrated physiological and multi-omics analyses revealed that MT-SeNPs activated phenylpropanoid biosynthesis by upregulating the expression of lignin-biosynthetic genes, increasing the activity of phenylalanine ammonia-lyase, cinnamoyl-CoA reductase, cinnamyl alcohol dehydrogenase, peroxidase enzymes (the enzyme activity increased by 22.94-49.57%, 56.02-56.60%, 26.20-37.08% and 41.30-152.66% at 3 to 5 days after butachlor stress, respectively), and promoting the accumulation of l-phenylalanine, trans-ferulic acid, sinapyl alcohol, thereby promoting deposition of lignin and cellulose. Additionally, MT-SeNPs enhanced the activities of detoxification enzyme (cytochrome P450, glutathione S-transferase, glycosyltransferase), activated glutathione metabolism.
conclusionMT-SeNPs may mitigate butachlor phytotoxicity by reinforcing cell-wall barriers and accelerating herbicide metabolism. This study provides a new strategy for using nanomaterials to relieve herbicide damage. © 2026 Society of Chemical Industry.
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