Abstract
Hairy root cultures of Atropa belladonna L. were established by infection either with Agrobacterium rhizogenes ATCC 15834 or MAFF 03-01724, and transgenic plants were obtained from both hairy root cultures. Doubly transformed roots were induced by re-infection of the leaf segments of transgenic Atropa belladonna plants (A. rhizogenes 15834) with MAFF 03-01724. Shoots and viviparous leaves were regenerated from the doubly transformed roots. The genetic transformation was determined by the opine assay (agropine, mannopine and/or mikimopine) and polymerase chain reaction. Physiological changes and tropane alkaloid biosynthesis in the hairy roots (singly and doubly transformed) were investigated. The alkaloid content in the doubly transformed root strain was intermediate as compared to the root strains which were singly transformed. On the other hand endogenous IAA levels in doubly transformed roots were significantly decreased compared to both singly transformed roots.
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Abbreviations
- BA:
-
benzyladenine
- IAA:
-
indoleacetic acid
- NAA:
-
naphthaleneacetic acid
- PCR:
-
polymerase chain reaction
- t-ZR:
-
trans-zeatin
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Jaziri, M., Yoshimatsu, K., Homès, J. et al. Traits of transgenic Atropa belladonna doubly transformed with different Agrobacterium rhizogenes strains. Plant Cell Tiss Organ Cult 38, 257–262 (1994). https://doi.org/10.1007/BF00033885
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DOI: https://doi.org/10.1007/BF00033885