2,3-Epoxybrassinosteroids are intermediates in the biosynthesis of castasterone in seedlings of Secale cereale |
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| Authors: | Antonchick Andrey Svatos Ales Schneider Bernd Konstantinova Olga V Zhabinskii Vladimir N Khripach Vladimir A |
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| Affiliation: | Max-Planck-Institute for Chemical Ecology, Beutenberg-Campus, Hans-Kn?ll-Str. 8, D-07745 Jena, Germany. |
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| Abstract: | The involvement of the 2,3-epoxybrassinosteroids secasterone and 2,3-diepisecasterone in the biosynthesis of castasterone has been demonstrated in seedlings of Secale cereale by LC-ESI-MS. Deuterated secasterone, upon administration to rye seedlings, was incorporated into castasterone and its 2beta- and 3beta-epimers. Administration of deuterated 2,3-diepisecasterone resulted in castasterone and 2-epicastasterone. A biosynthetic subpathway from typhasterol/teasterone via 2,3-epoxybrassinosteroid intermediates to castasterone is discussed. |
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| Keywords: | Secale cereale Gramineae Biosynthesis Brassinosteroids Castasterone Deuterium labelling Epoxides Epoxysteroids Secasterone Steroids |
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