SELENIUM Selenium was originally identified as a potentially toxic element long before it was recognized to be an essential trace mineral. Plants absorb selenium from the soil if it is available and incorporates it into several amino acids replacing sulfur as part of the normal structure. Plants can survive just fine without selenium since the amino acids function normally as building blocks of protein whether they contain sulfur or selenium. The most common amino acid that incorporates selenium in plants is methionine. When the sulfur atom is replaced by selenium the amino acid is called selenomethionine.
Posted on: Fri, 23 Aug 2013 05:57:43 +0000
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