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Resorcinol in exudates ofNuphar lutea.

R Sütfeld1, F Petereit, A Nahrstedt

  • 1Abt. f. Ökophysiologie, Max-Planck Institut f. Limnologie, D-24302, Plön, Germany.

Journal of Chemical Ecology
|November 15, 2013
PubMed
Summary

Resorcinol, a compound from Nuphar lutea seedlings, is released in large amounts and may act as an allelochemical. It showed toxic effects on Daphnia but was degraded by certain algae.

Area of Science:

  • Plant Biology
  • Aquatic Ecology
  • Phytochemistry

Background:

  • Nuphar lutea seedlings exude significant amounts of resorcinol (1,3-dihydroxybenzene).
  • Resorcinol's potential role as an allelochemical in aquatic ecosystems is under investigation.

Purpose of the Study:

  • To identify and quantify resorcinol in Nuphar lutea exudates.
  • To investigate factors influencing resorcinol production.
  • To assess the ecological impact of resorcinol on aquatic organisms.

Main Methods:

  • Axenic cultivation of Nuphar lutea seedlings from seeds.
  • Measurement of resorcinol exudation rates under varying conditions.
  • Application of resorcinol to zooplankton and phytoplankton species.

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Main Results:

  • Resorcinol identified as a major exudate constituent (up to 15 nmol/seedling/day).
  • Resorcinol production inversely correlated with nitrate and light supply.
  • Deleterious effects observed on a Daphnia species; Cryptophyceae degraded resorcinol.

Conclusions:

  • Resorcinol likely functions as an allelochemical, influencing aquatic ecosystem interactions.
  • Nuphar lutea regulates resorcinol release based on environmental factors.
  • Specific phytoplankton can metabolize resorcinol, indicating potential ecological detoxification pathways.