Acorus calamus L. enables tetracycline and sulfamethoxazole phytoremediation via host transcriptional-metabolic adaptation and changes in vertically transmitted endophyte populations.
Gong Y, Liu H, Jiang Y, Wang Y, Qi Y
Phytoremediation
The pond or wetland edge you've planted with sweet flag or cattails may already be quietly filtering pharmaceutical pollution that wastewater treatment plants routinely miss.
Scientists found that a common wetland plant called sweet flag can soak up and break down antibiotics that end up in waterways from farms and hospitals. The plant uses special enzymes — think of them as tiny molecular scissors — to chop the antibiotics into harmless pieces. What's surprising is that friendly bacteria permanently living inside the plant's tissues also help with this cleanup work.
Key Findings
Sweet flag removed 88–95% of tetracycline and 41–54% of sulfamethoxazole from water, primarily through biodegradation rather than simple absorption.
The plant's cytochrome P450 enzymes (the same 'green liver' detox system shared across all plant life) were identified as key drivers of antibiotic breakdown, with strong computational binding evidence (energies below -6 kcal/mol).
Bacteria naturally residing inside the plant — including Zoogloea, Acidovorax, and Rhizobium — were linked to detoxification genes and metabolites, suggesting the plant and its internal microbiome act as a team.
chevron_right Technical Summary
Sweet flag (Acorus calamus), a wetland plant, can remove up to 95% of the antibiotic tetracycline and over half of sulfamethoxazole from contaminated water. The plant does this partly through its own biochemical machinery and partly through beneficial bacteria living inside its tissues.
Abstract Preview
Phytoremediation has emerged as an alternative in situ treatment strategy for antibiotic-contaminated wastewater, yet how vertically transmitted endophytes (VTEs) closely associated with host plant...
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Acorus calamus is a species of flowering plant with psychoactive chemicals. It is a tall wetland monocot of the family Acoraceae, in the genus Acorus. Although used in traditional medicine over centuries to treat digestive disorders and pain, it has no clinical evidence of safety or efficacy and ...