Summary
This 2024 original-research paper by Inoue, Teramoto, Kazama, and Nakamura (Kyushu University) investigates the OsNramp5 metal transporter in rice, which mediates uptake of both manganese (essential nutrient) and cadmium (toxic contaminant) at the rice root. The study uses yeast assay systems to test engineered Nramp5 variants that preferentially transport manganese over cadmium, providing a path toward rice cultivars that maintain manganese nutrition while reducing cadmium uptake from soil. This is the molecular-genetic basis for low-cadmium rice cultivar development; it complements the regulatory framework anchored in JECFA 2022 PTMI and Codex matrix MLs by addressing upstream agricultural mitigation rather than downstream regulatory thresholds.
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Update history
The five most recent substantive edits to this page, classified major (evidence or structure moved), correction (a published value or statement was wrong and has been fixed), or minor (narrative rewritten without changing the underlying evidence). Each description is derived from what the edit did to this page; the linked commit is the authoritative record, routine regeneration passes are excluded, and the full version history lives in git. When DOI minting comes online (see schema docs), each entry below will also link to a version-pinned DataCite DOI.
| Commit | Date | Change | Description |
|---|---|---|---|
| a8052bb | 2026-08-09 | major | 1 source added; 3 sections added; narrative text revised |