Selenium Metabolism in Hemp (Cannabis sativa L.)—Potential for Phytoremediation and Biofortification

Selenium (Se) deficiency and toxicity affect over a billion people worldwide. Plants can mitigate both problems, via Se biofortification and phytoremediation. Here we explore the potential of hemp (Cannabis sativa L.) for these phytotechnologies. Field surveys in naturally seleniferous agricultural areas in Colorado, United States, found 15–25 μg of Se/g in seed and 5–10 μg of Se/g dry weight (DW) in flowers and leaves. Thus, 4 g of this hemp...