The effect of Tiron, a water soluble radical scavenger, on growth, morphology and alkaloid content of adventitious roots in Atropa belladonna |
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Authors: | M Akita Y Ohta |
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Institution: | (1) Department of Biotechnological Science, Kinki University, 930 Nishimitani, Uchita, Naga, Wakayama, 649–6493, Japan e-mail: akita@bio.waka.kindai.ac.jp Fax: +81-736-77-4754, JP |
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Abstract: | The effect of Tiron (disodium 1,2-dihydroxybenzene-3,5-disulfonate) on the growth, morphology and alkaloid content of adventitious
roots in Atropa belladonna was investigated. High concentrations of Tiron had an inhibitory effect on growth of the root. The appearance of cultured
roots was significantly changed from rough roots accompanied with callus-like tissue in control cultures to fine roots without
callus formation. Alkaloid content was drastically increased by the addition of 1 mM Tiron to the medium. The influence of
NAA, which has an inhibitory effect on alkaloid production, was partially restored by Tiron treatment, indicating that this
radical scavenger may affect the production of alkaloids through modulation of the mode of action of auxin. Glutathione content
of the root was not influenced by Tiron.
Received: 3 June 1999 / Revision received: 28 September 1999 / Accepted: 30 September 1999 |
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Keywords: | Adventitious root Alkaloid Atropa belladonna Tiron |
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