What question did this study set out to answer?

This research seeks to understand how typical quaternary ammonium compounds (QACs) are metabolized in wheat seedlings.

April 29, 2026

Systematic Revelation of the Metabolic Fate of Typical Quaternary Ammonium Compounds in Wheat Seedlings

Key Points

This research seeks to understand how typical quaternary ammonium compounds (QACs) are metabolized in wheat seedlings.
Analyzed root and shoot concentrations of -OH-DBAC, DTAC, and DDAC in wheat seedling samples.
Identified and quantified the metabolites resulting from these compounds.
Examined regioselective internal hydroxylation distinct from microbial pathways.
Root concentrations of -OH-DBAC were 1.8-4.3 times higher compared to other compounds.
Shoot concentrations of -OH-DBAC were 3.0-3.9 times higher, indicating significant absorption and metabolism.
Identified 21 metabolites for DTAC and 45 for DDAC, highlighting the influence of alkyl chain length on metabolic pathways.

Abstract

-OH-DBAC, with root concentrations 1.8-4.3 times and shoot concentrations 3.0- 3.9 times higher, demonstrating regioselective internal hydroxylation distinct from microbial pathways (α/ω-hydroxylation). Similar patterns were observed for DTAC (21 metabolites) and DDAC (45 metabolites), further underscoring the role of alkyl chain number. These findings provide the first systematic insight into QAC fate in crops, essential for risk assessment of cationic pollutants.

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