Article

Plant Cell Reports

, Volume 8, Issue 8, pp 479-482

First online:

Comparison of secondary product accumulation in photoautotrophic, photomixotrophic and heterotrophic Nicotiana tabacum cell suspension cultures

  • D. IkemeyerAffiliated withLehrstuhl Biochemie der Pflanzen, Westfälische Wilhelms-Universität
  • , W. BarzAffiliated withLehrstuhl Biochemie der Pflanzen, Westfälische Wilhelms-Universität

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Summary

Photoautotrophic, photomixotrophic and heterotrophic Nicotiana tabacum cell suspension cultures were compared for the constitutive accumulation of secondary metabolites and the elicitor-induced formation of the phytoalexin capsidiol. Nicotine and chlorogenic acid were found in high amounts in the heterotrophic cultures and in moderate concentrations in photomixotrophic but not in photoautotrophic cells. Nicotinic acid-N-glucoside occured in all culture types; in photoautotrophic and photomixotrophic cells the formation of N-methylnicotinic acid (trigonelline) was also observed. Treatment with a fungal elicitor led to substantial accumulation of capsidiol in heterotrophic and photomixotrophic cells and in only low levels in photoautotrophic cultures. Elicitor-treated photomixotrophic cells showed a pronounced increase in cell wall-bound phenolics. The levels of nicotine, nicotinic acid-N-glucoside and trigonelline were not affected by elicitation.

Key words

Nicotiana tabacum cell suspension culture nicotine chlorogenic acid nicotinic acid conjugates elicitation photoautotrophy