Scientists mapped a family of metal-transporting genes across six crop mustard species and found specific genes in rapeseed that control how much cadmium the plant absorbs into roots, moves to leaves, or keeps out entirely — pointing to clear targets for breeding safer, cleaner crops.
1
81 NRAMP metal-transporter genes were identified across six Brassica species, organized into two distinct subfamilies with different roles in cadmium handling.
2
BnNRAMP2c and BnNRAMP2d expression strongly correlated with root cadmium accumulation, while BnNRAMP1c/1e/1f correlated with leaf cadmium levels, showing a clear division of labor.
3
BnNRAMP6a correlated negatively with root cadmium content, suggesting it may actively exclude cadmium — a potential mechanism for breeding low-cadmium crops.
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