Journal
JOURNAL OF PLANT PHYSIOLOGY
Volume 166, Issue 17, Pages 1946-1949Publisher
ELSEVIER GMBH, URBAN & FISCHER VERLAG
DOI: 10.1016/j.jplph.2009.05.003
Keywords
Alga; Brassinosteroid; Chlorella vulgaris; Occurrence; Trebouxiophyceae
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The brassinosteroids (BRs) occur ubiquitously in the plant kingdom. The occurrence of BRs has been demonstrated in almost every part of higher plants, such as pollen, flower buds, fruits, seeds, vascular cambium, leaves, shoots and roots. In this study, BRs were isolated and identified in the culture of wild-type Chlorella vulgaris. Seven BRs, including teasterone, typhasterol, 6-deoxoteasterone, 6-deoxotyphasterolt, 6-deoxocastasterone, castasterone and brassinolide, were identified by GC-MS. All compounds belong to the BR biosynthetic pathway. The results suggest that early and late C6 oxidation pathways are operating in C. vulgaris. This study represents the first isolation of BRs from C. vulgaris cultures. (C) 2009 Elsevier GmbH. All rights reserved.
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