The influence of phytohormones on growth,organ differentiation and fructan production in callus of Symphytum officinale L. |
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Authors: | D Haaß A A Abou-Mandour W Blaschek G Franz F C Czygan |
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Institution: | (1) Institut für Pharmazeutische Biologie, Universität Regensburg, Universitätsstr. 31, W-8400 Regensburg, Germany;(2) Institut für Pharmazeutische Biologie, Universität Würzburg, Mittlerer Dallenbergweg 64, W-8700 Würzburg, Germany |
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Abstract: | Summary Callus derived from Symphytum officinale L. regenerants was cultured in the presence of various phytohormones. The growth rate of callus was stimulated by all phytohormones at various concentrations. With 1-naphthaleneacetic acid no organ differentiation could be observed. With indole-3-butyric acid at low concentrations only roots were formed, whereas 6-benzylaminopurine, kinetin and zeatin at various concentrations induced either root or shoot formation or the simultaneous regeneration of both. Minor amounts of fructans were formed at high 6-benzylaminopurine-, zeatin- and at all indole-3-acetic acid-concentrations. The concentration of 1-naphthaleneacetic acid had no influence on the fructan content. Highest rates of fructan synthesis occurred at low zeatin-concentrations up to 1.5 mg/l. Only zeatin at all concentrations induced the synthesis of polyfructans, whereas appreciable amounts of oligofructans were formed under the influence of all other phytohormones.Abbreviations NAA
1-naphthaleneacetic acid
- IBA
indole-3-butyric acid
- BAP
6-benzylaminopurine
- IAA
indole-3-acetic acid
- 2,4-D
2,4-dichlorophenoxyacetic acid
- DP
degree of polymerisation
- GLC
gas liquid chromatography
- TLC
thin layer chromatography |
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