Methionine as a Dominant Precursor of Phytosiderophores in Graminaceae Plants |
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| Authors: | Mori Satoshi; Nishizawa Naoko |
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| Institution: | Department of Agricultural Chemistry, The University of Tokyo Bunkyo-ku, Tokyo 113, Japan |
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| Abstract: | Nine 14C-labeled amino acids and 14C-acetic acid from root tipsof Fe-deficient Graminaceae plants (Hordeum vulgare, Oryzaesativa and Avena saliva) were surveyed to determine the precursoramino acid of phytosiderophores. The dominant precursor wasmethionine, which was incorporated into avenic acid  deoxymugineicacid mugineic acid epihydroxymugineic acid and/or hydroxymugineicacid in this order. Methionine sulfoxide or methionine sulfonemay be important intermediates in going from methionine to avenicacid. (Received May 6, 1987; Accepted June 12, 1987) |
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