Selenium

Hyperaccumulation threshold: 100 µg g⁻¹ [ref] Tracked

Selenium hyperaccumulators, chiefly North American Astragalus and Stanleya, convert selenium into organic forms and volatile compounds. They are important in both seleniferous-rangeland toxicology and biofortification research.

4 species recorded in this database; highest cited value 14,900 µg g⁻¹.

		Metal			Region	Uptake	Verify
Astragalus bisulcatus	Fabaceae	Se Selenium	14,900	149×	North America (western)	Obligate	review
Astragalus racemosus	Fabaceae	Se Selenium	14,000	140×	North America (Great Plains)	Obligate	review
Neptunia amplexicaulis	Fabaceae	Se Selenium	13,600	136×	Australia (Queensland)	Obligate	primary
Stanleya pinnata	Brassicaceae	Se Selenium	3,500	35×	North America (western)	Obligate	review