Allelopathic activity of Ceratophyllum demersum L. and Najas marina ssp. intermedia (Wolfgang) Casper

Kurzanzeige
dc.contributor.authorGross, Elisabeth
dc.contributor.authorErhard, Danieladeu
dc.contributor.authorIványi, Eniködeu
dc.date.accessioned2011-03-24T17:28:11Zdeu
dc.date.available2011-03-24T17:28:11Zdeu
dc.date.issued2003deu
dc.description.abstractWe investigated the allelopathic activity of two submersed macrophytes with different growth forms and nutrient uptake modes, Ceratophyllum demersum and Najas marina ssp. intermedia. A bioassay-directed method development revealed optimal extraction solvents for allelochemicals from both macrophytes. For Najas, 50% methanol and for Ceratophyllum 50% acetone yielded the strongest inhibition in the agar-diffusion assay with various filamentous or chroococcal cyanobacteria as target species. Further fractionation by liquid liquid extraction (LLE) and solid phase extraction (SPE) procedures showed that both aquatic plants appear to have more than one active fraction, one being hydrophilic and one moderately lipophilic. The water-soluble allelochemicals may inhibit phytoplankton whereas the lipophilic allelochemicals may act through direct cell cell contact, e.g., against epiphytes. Bothmacrophytes also exuded allelopathically active compounds into the surrounding medium as shown by SPE of their incubation water.eng
dc.description.versionpublished
dc.format.mimetypeapplication/pdfdeu
dc.identifier.citationFirst publ. in: Hydrobiologia 506 (2003), pp. 583-589deu
dc.identifier.ppn277543495deu
dc.identifier.urihttp://kops.uni-konstanz.de/handle/123456789/6666
dc.language.isoengdeu
dc.legacy.dateIssued2008deu
dc.rightsAttribution-NonCommercial-NoDerivs 2.0 Generic
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/2.0/
dc.subjectallelochemicaldeu
dc.subjectallelopathydeu
dc.subjectaquatic angiospermdeu
dc.subjectcyanobacteriadeu
dc.subjectexudationdeu
dc.subjectsubmersed macrophytedeu
dc.subject.ddc570deu
dc.titleAllelopathic activity of Ceratophyllum demersum L. and Najas marina ssp. intermedia (Wolfgang) Caspereng
dc.typeJOURNAL_ARTICLEdeu
dspace.entity.typePublication
kops.citation.bibtex
@article{Gross2003Allel-6666,
  year={2003},
  title={Allelopathic activity of Ceratophyllum demersum L. and Najas marina ssp. intermedia (Wolfgang) Casper},
  number={1/3},
  volume={506},
  issn={0018-8158},
  journal={Hydrobiologia},
  pages={583--589},
  author={Gross, Elisabeth and Erhard, Daniela and Iványi, Enikö}
}
kops.citation.iso690GROSS, Elisabeth, Daniela ERHARD, Enikö IVÁNYI, 2003. Allelopathic activity of Ceratophyllum demersum L. and Najas marina ssp. intermedia (Wolfgang) Casper. In: Hydrobiologia. 2003, 506(1/3), pp. 583-589. ISSN 0018-8158. eISSN 1573-5117deu
kops.citation.iso690GROSS, Elisabeth, Daniela ERHARD, Enikö IVÁNYI, 2003. Allelopathic activity of Ceratophyllum demersum L. and Najas marina ssp. intermedia (Wolfgang) Casper. In: Hydrobiologia. 2003, 506(1/3), pp. 583-589. ISSN 0018-8158. eISSN 1573-5117eng
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