Abstract
Neptunia amplexicaulis (Domin.) is a selenium-accumulating herbaceous legume endemic to Central Queensland. This species can accumulate selenium to more than 4,000 p.p.m. on a dry matter basis and is the main cause of clinical selenosis in livestock in some regions1. In previous work it was shown that 75Se-selenite is metabolized by this species predominantly into ethanol-soluble compounds, with negligible labelling of the protein fraction2. This distribution contrasted strongly with the predominant conversion of 75Se-selenite to seleno-amino-acids in peptide linkage in the proteins of several common pasture and cereal species2. The identity of the seleno-compounds present in N. amplexicaulis is therefore of considerable interest.
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PETERSON, P., BUTLER, G. Significance of Selenocystathionine in an Australian Selenium-accumulating Plant, Neptunia amplexicaulis. Nature 213, 599–600 (1967). https://doi.org/10.1038/213599a0
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DOI: https://doi.org/10.1038/213599a0
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