Journal
PHYTOCHEMISTRY LETTERS
Volume 13, Issue -, Pages 218-227Publisher
ELSEVIER
DOI: 10.1016/j.phytol.2015.06.004
Keywords
Bombacaceae; Callus cultures; Chorisia; Flavonoids; Rhoifolin; Tiliroside
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The current work aims to stimulate the production of rhoifolin and tiliroside as two valuable phytochemicals from Chorisia chodatii Hassl. and Chorisia speciosa A. St.-Hil. callus cultures. A comparison between three explants from the in vitro germinated seedlings of both species for callus induction and accumulation of both flavonoids was carried out. Highly efficient calluses were induced from the leaves, stems and roots of C. chodatii seedlings on Gamborg's B5 (B5) and Murashige and Skoog (MS) media containing 2.0 mg/l beta-naphthalene acetic acid (NAA) and 0.5 mg/l 6-benzyladenin (BA) or kinetin (Kn), while those of C. speciosa seedlings efficiently produced calluses on both media supplemented with 0.5 or 1.0 mg/l NAA and 0.5 mg/l BA. Besides, the highest contents of rhoifolin (1.927 mg/g DW) and tiliroside (1.776 mg/g DW) from C. speciosa cultures were obtained from the calluses of seedlings' roots and stems maintained on B5 medium containing 1.0 mg/l NAA and 0.5 mg/l BA, respectively. On the other hand, the maximum rhoifolin content (0.555 mg/g DW) from C. chodatii cultures was obtained from the calluses of seedlings' stems grown on B5 medium supplemented with 2.0 mg/l NAA and 0.5 mg/l BA, whereas the highest tiliroside content (0.547 mg/g DW) was provided by the root explants on B5 medium containing 2.0 mg/l NAA and 0.5 mg/l Kn. Both flavonoids were bioaccumulated in greater amounts than the wild and cultivated intact plants, which provides a promising tool for their future commercial production under a controlled environment, independent of climate and soil conditions. (C) 2015 Phytochemical Society of Europe. Published by Elsevier B.V. All rights reserved.
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