ArticleJournal of advanced research2025
An ABC transporter-mediated transport and metabolism of the pesticide bentazone in rice (Oryza sativa L.).
Article in Journal of advanced research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- A GAPlant communications · 2026Article
- Characterization of a Topramezone-Resistant Rice Mutant TZR1: Insights into GST-Mediated Detoxification and Antioxidant Responses.Plants (Basel, Switzerland) · 2025Article
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionBentazon (BNTZ) is a selective contact herbicide widely used to control field weeds for crop production. Excessive use of BNTZ leads to its accumulation in soils and crops, becoming an environmental contaminant. Therefore, investigation of the mechanisms for BNTZ detoxification and degradation in crops is fundamentally important to reduce crop contamination and ensure food safety.
objectivesThis study aims to elucidate the mechanism of detoxification and degradation pathways of the BNTZ complex in rice by creating transgenic lines expressing a rice ATP-binding cassette (OsABC) transporter gene through genetic engineering techniques combined with chemical analytical techniques and metabolomics approaches.
methodsWe established the rice transgenic lines overexpressing (OE) a rice OsABC transporter and its knockout lines by CRISPR-Cas9 to characterize the gene function and measured the accumulation of BNTZ residues in rice. The metabolites of BNTZ were characterized by LC/Q-TOF-HRMS/MS (Liquid chromatography/time of flight-high resolution mass spectrometry).
resultsOverexpression of OsABC significantly conferred rice resistance to BNTZ toxicity by increasing plant elongation, dry weight, and chlorophyll content, and significantly reducing cell membrane damage and BNTZ accumulation in rice tissues. Six different metabolites and ten conjugates were well defined in chemical structures. The reduced BNTZ levels and degradation products in the grains of the OE lines supported the robust activity of the OsABC gene function. Using UPLC-Q-TOF/MS, we further identified accumulated basic metabolites of various carbohydrates, amino acids, hormones, and flavonoids, and found that these metabolites involved in BNTZ degradation were increased more in OE lines than in wild-type (WT) rice.
conclusionsOur work demonstrates that the OsABC transporter plays a critical role in regulating the mobility and degradative metabolism of BNTZ in rice, thus revealing a regulatory mechanism underlying rice resistance to BNTZ toxicity and adaptation to the environmental stress.
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