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  Polyphenols with algicidal activity in the submerged macrophyte Myriophyllum spicatum L.

Gross, E. M., & Sütfeld, R. (1994). Polyphenols with algicidal activity in the submerged macrophyte Myriophyllum spicatum L. In M. Geibel, D. Treutter, & W. Feucht (Eds.), International Symposium on Natural Phenols in Plant Resistance (pp. 710-716). Wageningen: ISHS.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-E33E-E Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-E33F-C
Genre: Conference Paper

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Gross_1994.pdf (Publisher version), 303KB
 
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 Creators:
Gross, Elisabeth M.1, Author              
Sütfeld, Rainer1, Author              
Affiliations:
1Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_976547              

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Free keywords: Myriophyllum spicatum; submerged macrophyte; gallic acid; ellagic acid; polyphenol; chemical defence; allelopathy
 Abstract: The role of phenols as defence mechanisms in various terrestrial plants is well studied. However, in aquatic environments, they are probably involved also in the chemical interactions between species. A periodic shift from dominance by submerged macrophytes to dominance by phytoplankton and vice versa without apparent change in the external nutrient loading is sometimes observed in shallow eutrophic lakes. Due to the fact that nutrient levels are not usually limiting to phytoplankton growth, the release of allelochemicals by macrophytes is suspected to be responsible for poor algal growth. Myriophyllum spicatum is known to produce several phenolic compounds. Aqueous methanolic extracts of fresh or lyophilized as well as axenic or non-axenic M. spicatum plant material exhibited strong algicidal activity against cyanobacteria. Chlorophytes and diatoms are also affected, but to a lesser extent. Bioassay directed fractionation of the extract lead to the isolation of two strong algicidal compounds. These compounds are constitutively present in the plant and were characterized as galloyl glycosides (500-1000 dalton). To test the ecological importance of these substances, the culture water was screened for exudated phenolic compounds. At least 5-10 different polyphenols could be detected. An algicidal galloyl ester and several derivatives of ellagic acid were among them. The possible release mechanisms and the mode of action of these polyphenols as defence compounds are discussed.

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Language(s): eng - English
 Dates: 1994-12-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: eDoc: 214910
Other: 1540/S 36958
 Degree: -

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Title: International Symposium on Natural Phenols in Plant Resistance
Place of Event: Weihenstephan
Start-/End Date: 1993-09-13 - 1993-09-17

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Source 1

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Title: International Symposium on Natural Phenols in Plant Resistance
Source Genre: Proceedings
 Creator(s):
Geibel, Martin, Editor
Treutter, Dieter, Editor
Feucht, Walter, Editor
Affiliations:
-
Publ. Info: Wageningen : ISHS
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 710 - 716 Identifier: ISBN: 90-6605-356-9

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Title: Acta Horticulturae
Source Genre: Series
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Publ. Info: -
Pages: - Volume / Issue: 381 Sequence Number: - Start / End Page: - Identifier: ISSN: 0567-7572