Isolation and characterization of conjugated gibberellins in maturing seeds of Sechium edule |
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| Affiliation: | 1. Department of Pharmacology, Xuan Wu Hospital of Capital Medical University, Beijing Geriatric Medical Research Center, Key Laboratory for Neurodegenerative Diseases of Ministry of Education, 45 Changchun Street, Beijing 100053, PR China;2. School of Pharmaceutical Sciences, Zhengzhou University, 100 Science Avenue, Zhengzhou, Henan Province 450001, PR China;3. Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, 12 Jichang Road, Guangzhou, Guangdong Province 510405, PR China |
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| Abstract: | Endosperm and cotyledons of Sechium edule at different stages of seed development were found to contain three novel GA conjugates. 3-propyl- or 3-acetyl- GA4/7 were characterized by mass spectral analysis and were found to be biologically active in contrast to synthetic GA4/7 propyl esters. An unusual GA glucoside showing biological activity was also isolated from both tissues and characterized by mass spectrometry and NMR analysis as 16,17-dihydro-16-hydroxy-GA15 alcohol glucoside. The functional significance of this novel GA conjugate is discussed. |
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