Cardamine hupingshanensis
Accumulation profile
- Substrate
- Seleniferous soils near Se-mine drainage
- Habitat
- Streamsides in a selenium-mining district
- Distribution
- China (Enshi, Hubei)
- First reported
- 2013 · Yuan et al.
- Verification
- primary-measured
Description & ecology
Leaf selenium up to 1,965 ± 271 mg/kg dry weight near mine tailings (Yuan et al. 2013, read at the open-access source), with more than 70% present as selenocystine (SeCys2). Corrected 2026-08-15 from an earlier '>90%', which is Yuan's figure for Se-methyl-selenocysteine in Stanleya pinnata / Astragalus bisulcatus, not the selenocystine fraction in this species.
Honest bound: the population-mean leaf Se was only ~380 mg/kg (the authors call it a 'secondary accumulator' on average), so hyperaccumulator status rests on the near-tailings maximum. Root Se (~4,414 mg/kg) is higher but is non-comparable tissue and is not used as the foliar maximum. The epithet is misspelled 'hupingshanesis' in the source; the accepted spelling is hupingshanensis.
References
- Yuan, L., Zhu, Y., Lin, Z.-Q., Bañuelos, G., Li, W., & Yin, X. (2013). A novel selenocystine-accumulating plant in selenium-mine drainage area in Enshi, China. PLoS ONE, 8, e65615. doi:10.1371/journal.pone.0065615