Accumulation of vismione A in regenerated plants ofVismia guianensis DC |
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Authors: | G Pasqua B Monacelli A Cuteri F Spuntarelli N Rascio B Botta G Delle Monache R Scurria |
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Institution: | (1) Dipartimento di Biologia Vegetale, Università La Sapienza , Piazzale Aldo Moro 5, I-00185 Rome, Italy;(2) Dipartimento di Biologia, Università di Padova, Padua;(3) Centre Chimica dei Recettori, Istituto di Chimica, Università Cattolica S. Cuore, Rome |
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Abstract: | Summary The accumulation and tissue localization of antitumoral vismione A in the in vitro regenerated plants ofVismia guianensis DC. were investigated. Chemical and light and electron-microscope analyses revealed that vismione A, detected as phenolic black globules in the vacuoles, was accumulated in the leaf, mainly in the palisade, and in small amounts in the primary body of the stem (epidermis and first cortical layer). Vismione A is neither present in the secretory cavities and ducts of the leaf nor in the secretory ducts of the stem. In the leaves of the regenerated plants, the amount of vismione A reached 0.5% FW, compared to 0.1% in the leaves of the parent plant. The optimization of the in vitro regeneration of plants was obtained in MS medium enriched with BAP (1 ppm). The best results for the rooting of regenerated plants were achieved with MS medium containing half-strength salts and 10–5 MIBA.Abbreviations APT
attached proton test
- BAP
6-benzyl-aminopurine
- CC
column chromatography
- 2,4-D
2,4-dichlorophenoxyacetic acid
- EtOAc
ethyl acetate
- IBA
indole-3-butyric acid
- MeOH
methanol
- MS
Murashige and Skoog
- NAA
-naphthaleneacetic acid
- NMR
nuclear magnetic resonance
- TEM
transmission electron microscopy
- TLC
thin layer chromatography
- UV
ultraviolet |
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Keywords: | Metabolite accumulation Vismia guianensis Callus cultures Plant regeneration Ultrastructure Histochemistry |
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