Schmauder HP, Gröger D, Koblitz H, Koblitz D. Shikimate pathway activity in shake and fermenter cultures of Cinchona succirubra.
PLANT CELL REPORTS 1985;
4:233-236. [PMID:
24253976 DOI:
10.1007/bf00269365]
[Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/1985] [Indexed: 06/02/2023]
Abstract
Cell suspension cultures of Cinchona succirubra were cultivated in shake cultures and for the first time in airlift fermenters. Under both conditions L-tryptophan exerts a stimulatory effect on alkaloid formation. In this context the regulatory pattern of some shikimate pathway enzymes was investigated in non-supplemented and tryptophan supplemented Cinchona cell cultures. A remarkable increase of tryptophan decarboxylase (TDC) activity was observed in Cinchona cells under the influence of tryptophan. Apparently, like in some other indole alkaloid producing cell cultures, a high TDC activity is a prerequisite for alkaloid formation. Growth pattern and some enzyme activities of C. succirubra fermenter cultures at controlled and non-regulated pH levels were followed. Optimum growth and alkaloid formation were recorded under non-regulated (normal) pH conditions.
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