Biological and Pharmaceutical Bulletin
Online ISSN : 1347-5215
Print ISSN : 0918-6158
ISSN-L : 0918-6158
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De Novo Regeneration of Scrophularia yoshimurae YAMAZAKI (Scrophulariaceae) and Quantitative Analysis of Harpagoside, an Iridoid Glucoside, Formed in Aerial and Underground Parts of In Vitro Propagated and Wild Plants by HPLC
Abhay P. SAGAREChao-Lin KUOFu-Shin CHUEHHsin-Sheng TSAY
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2001 Volume 24 Issue 11 Pages 1311-1315

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Abstract

A protocol for de novo regeneration and rapid micropropagation of Scrophularia yoshimurae (Scrophulariaceae) has been developed. Multiple shoot development was achieved by culturing the shoot-tip, leaf-base, stem-node and stem-internode explants on Murashige and Skoog (MS) medium supplemented with 4.44 μM N6-benzyladenine (BA) and 1.07 μM α-naphthaleneacetic acid (NAA). Stem-node and shoot-tip explants showed the highest response (100%) followed by stem-internode (74.4%) and leaf-base (7.7%) explants. The shoots were multiplied by subculturing on the same medium used for shoot induction. Shoots were rooted on growth regulator-free MS basal medium and the plantlets were transplanted to soil and acclimatized in the growth chamber. The content of harpagoside, a quantitatively predominant iridoid glycoside, in different plant material was determined by high performance liquid chromatography (HPLC). The analysis revealed that the content of harpagoside in the aerial and underground parts of S. yoshimurae was significantly higher than the marketed crude drug (underground parts of Scrophularia ningpoensis).

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© 2001 The Pharmaceutical Society of Japan
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